WO2004054245A1 - 情報処理装置および情報処理方法、情報処理システム、記録媒体、並びにプログラム - Google Patents
情報処理装置および情報処理方法、情報処理システム、記録媒体、並びにプログラム Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/30—Information retrieval; Database structures therefor; File system structures therefor of unstructured textual data
- G06F16/33—Querying
- G06F16/3331—Query processing
- G06F16/3332—Query translation
- G06F16/3334—Selection or weighting of terms from queries, including natural language queries
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
- H04N21/2353—Processing of additional data, e.g. scrambling of additional data or processing content descriptors specifically adapted to content descriptors, e.g. coding, compressing or processing of metadata
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
- H04N21/26283—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists for associating distribution time parameters to content, e.g. to generate electronic program guide data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/432—Content retrieval operation from a local storage medium, e.g. hard-disk
- H04N21/4325—Content retrieval operation from a local storage medium, e.g. hard-disk by playing back content from the storage medium
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
- H04N21/44213—Monitoring of end-user related data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/466—Learning process for intelligent management, e.g. learning user preferences for recommending movies
- H04N21/4661—Deriving a combined profile for a plurality of end-users of the same client, e.g. for family members within a home
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/466—Learning process for intelligent management, e.g. learning user preferences for recommending movies
- H04N21/4668—Learning process for intelligent management, e.g. learning user preferences for recommending movies for recommending content, e.g. movies
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/84—Generation or processing of descriptive data, e.g. content descriptors
Definitions
- Information processing apparatus information processing method, information processing recording medium, and program
- the present invention relates to an information processing apparatus and an information processing method, an information processing system, a recording medium, and a program.
- a program such as a television broadcast or a radio broadcast, or streaming data
- the present invention relates to an information processing apparatus and an information processing method, an information processing system, a recording medium, and a program that are suitable for use in recommending an automatic recording or a program.
- program information program metadata
- EPG electronic program guide
- the method of recommending a program to a user differs depending on the method of acquiring user preference data. For example, an initial interest registration method in which information about a user's interests is initially registered, and a program is recommended based on the information, A viewing history use method that recommends programs using the history of programs that the user has watched in the past, or a collaborative filtering method that recommends programs using the viewing histories of other users is available. there were.
- the user can enter, for example, a favorite program category (eg, drama, variety, etc.), a favorite genre (inference, comedy, etc.), or a favorite talent name.
- a favorite program category eg, drama, variety, etc.
- a favorite genre inference, comedy, etc.
- a favorite talent name is obtained by matching with the program metadata using these information as keywords.
- the viewing history use method each time a user views a program, When the set metadata is accumulated and, to some extent, historical metadata is accumulated, the metadata is analyzed to obtain information such as a favorite program category, a favorite genre, or a favorite talent name. . By using these information as keywords and performing matching with the program metadata, the program name to be recommended can be obtained.
- a recording device using an HDD Hard Disk Drive
- user operations such as recording reservation or recording are accumulated as history information, and may be used to acquire preference information.
- the user may not be watching the program with particular interest, but may be watching the program because he / she has a television receiver or radio.
- it is possible to discriminate some of the programs that have been consciously watched, and to obtain information that better reflects the user's preferences.
- the viewing history of the first user is matched with the viewing histories of other users, so that the viewing history is similar to that of the first user.
- searching for the second user and acquiring the history data of the viewing or operation the programs that the second user has watched and the programs that the first user has not watched are extracted and recommended. Is what you do.
- an n-dimensional attribute vector is added to a broadcast program in advance as program attribute information, To compare the attribute vector with the selection vector generated based on the initial registration contents of the user and the average value of each attribute item of the attribute vector of the program that the user has played or scheduled to record.
- a broadcast program is preliminarily applied with a program attribute vector, and the initial registration contents of the user and the user By comparing the selected vector generated based on the average value of each attribute item of the attribute vector of the program that has been played back or scheduled for recording with the attribute vector, Alternatively, when a program to be played is selected, since the operation history of the user is used, similarly, items that are likely to overlap as histories and items such as performers whose elements are likely to be spread as histories are similar. The weighting may be biased.
- the present invention has been made in view of such a situation, and it is an object of the present invention to be able to select a program that matches a user's preference.
- a first information processing apparatus comprises: an acquiring unit for acquiring information on a content; and an attribute information generating unit for generating attribute information composed of a plurality of items based on the information on the content acquired by the acquiring unit. And first storage means for storing first weight information corresponding to the item of attribute information generated by the attribute information generation means, wherein the first weight information is attribute information and preference information of a predetermined user. It is characterized in that the degree of contribution of each of a plurality of items in the calculation of the degree of similarity with is specified.
- a transmission means for transmitting the attribute information generated by the attribute information generation means may be further provided.
- the transmitting means extracts the first weighting information matching the condition of the content from the first weighting information stored in the first storage means, JP2003 / 015925
- the information can be further transmitted in association with the attribute information generated by the generation unit.
- the condition of the content can be a genre of the content.
- the information on the content acquired by the acquiring means may further include an extracting means for extracting predetermined information.
- the attribute information generating means may include a plurality of pieces of the predetermined information extracted by the extracting means. It can be vectorized for each item of, and attribute information can be generated.
- the attribute information generating means can analyze the information described in the language among the information on the contents, and generate attribute information based on the analysis result.
- a second storage unit that stores preference information of a predetermined user composed of a plurality of items; a preference information stored by the second storage unit; and attribute information generated by the attribute information generation unit.
- a recommendation information generation unit that generates recommendation information indicating content that matches the user's preference.
- the recommendation information generating means can generate the recommendation information by comparing the attribute information with the preference information using the first weighting information stored in the first storage means.
- An operation history acquisition unit for acquiring a user operation history, a preference information generation unit for generating user preference information based on the operation history acquired by the operation history acquisition unit, and a preference information generation unit.
- Weight information generating means for generating second weight information based on the preference information may be further provided.
- the second weight information includes attribute information and user preference of a plurality of items. The degree of contribution at the time of calculating the degree of similarity with the information can be defined.
- the recommendation information generating means uses the second weighting information generated by the weighting information generating means to generate the preference information. By comparing the attribute information with the attribute information, recommended information can be generated.
- a first information processing method generates an attribute step including a plurality of items based on an acquisition step of acquiring information on content and information on the content acquired by the processing of the acquisition step.
- a plurality of items in calculating the similarity between the attribute information and the preference information of a predetermined user based on the conditions of the content based on the information on the content acquired by the process of the attribute information generation step and the acquisition step.
- the program recorded on the first recording medium of the present invention includes an acquisition step of acquiring information relating to content, and an attribute composed of a plurality of items based on the information relating to the content acquired by the processing of the acquisition step. Calculating the similarity between the attribute information and the preference information of a predetermined user based on the conditions of the content based on the attribute information generating step of generating the information and the information on the content acquired by the processing of the acquiring step.
- the extraction step of extracting weighting information defining the degree of contribution of each of the plurality of items, the weighting information extracted by the processing of the extraction step, and the attribute information generated by the processing of the attribute information generation step. And an associating step.
- a first program includes: an acquisition step for acquiring information on content; and an attribute information generation for generating attribute information composed of a plurality of items based on the information on content acquired by the processing of the acquisition step.
- Information about the content is acquired, attribute information composed of a plurality of items is generated based on the acquired information about the content, and the attribute information is determined based on the condition about the content based on the information about the content.
- the weighting information defining the degree of contribution of each of the plurality of items is associated with the attribute information.
- a second information processing apparatus includes: an acquisition unit configured to acquire attribute information of a content including a plurality of items; a storage unit configured to store user preference information including a plurality of items; Calculating the similarity between the attribute information acquired by the acquisition unit and the user preference information stored in the storage unit using predetermined weighting information, thereby recommending the content that matches the user preference.
- the information includes recommendation information generating means for generating information, and the weighting information is characterized in that it defines the degree of contribution of each of the plurality of items in calculating the similarity between the attribute information and the user preference information.
- the obtaining means may further obtain the weight information together with the attribute information of the content, and the recommendation information generating means may compare the attribute information with the preference information using predetermined weight information. Thereby, recommendation information can be generated.
- An operation history acquisition unit for acquiring a user operation history, a preference information generation unit for generating user preference information based on the operation history acquired by the operation history acquisition unit, and a preference information generation unit.
- Weighting information generating means for generating weighting information based on the preference information may be further provided.
- the recommendation information generating means includes a preference information using the weighting information generated by the weighting information generating means. By comparing the information with the attribute information, it is possible to generate the recommended information.
- the weighting information may be information indicating the characteristic preference of the user with respect to the general preference in the attribute information of the content.
- Weighting information is an attribute of the content attribute information that is important to the user.
- the information may be information to be indicated.
- the weighting information may be information indicating an item representing the content that the user prefers among the attribute information of the content.
- the weighting information may be information indicating an item representing content that the user does not like among content attribute information.
- Operation input means for receiving a user's operation input may be further provided, and the weighting information may be information set by the user's operation input input by the operation input means. .
- a second information processing method is a method for calculating a similarity between content attribute information constituted by a plurality of items and preference information of a predetermined user constituted by the plurality of items.
- An acquisition step of acquiring setting information relating to weighting information defining a degree of each contribution, and a similarity between attribute information and preference information are determined based on the setting information relating to the weighting information acquired by the processing of the acquiring step. It is characterized by including a calculation step of calculating, and a recommendation information generation step of generating recommendation information indicating content matching the user's preference using the calculation result of the processing of the calculation step.
- the program recorded on the second recording medium of the present invention is used for calculating the similarity between the content attribute information composed of a plurality of items and the preference information of a predetermined user composed of a plurality of items.
- a recommendation information generation step of generating recommendation information indicating content matching the user's preference using the calculation result of the calculation step.
- a second program is a program for calculating the degree of similarity between attribute information of content composed of a plurality of items and preference information of a predetermined user composed of a plurality of items.
- weighting information that defines the degree
- the similarity between attribute information of a content composed of a plurality of items and preference information of a predetermined user composed of a plurality of items is calculated using weighting information that defines a degree of contribution of each of the plurality of items. Then, recommendation information indicating the content that matches the user's preference is generated.
- An information processing system includes: a first information processing device that generates attribute information of content based on information related to content; and a user based on attribute information of content supplied from the first information processing device.
- a second information processing device that executes a process of selecting content that matches the user's preference, the first information processing device comprising: a first obtaining unit that obtains information about content; and a first obtaining device that obtains information related to content.
- Attribute information generating means for generating attribute information composed of a plurality of items based on information related to the content acquired by the means; and a first attribute corresponding to the attribute information items generated by the attribute information generating means.
- First weighting means for storing weighting information, and first weighting information matching the content condition from the first weighting information stored in the first memory means. And transmitting means for transmitting the attribute information in association with the attribute information generated by the attribute information generating means, wherein the second information processing apparatus comprises: A second acquisition means for acquiring the weighting information of the first, second storage means for storing user preference information composed of a plurality of items, and attribute information acquired by the second acquisition means, The similarity to the user preference information stored in the second storage means is determined by determining at least one of the first weighting information and the second weighting information different from the first weighting information. And recommendation information generating means for generating recommendation information indicating content that matches the user's preference by calculating the first weighting information and the second weighting. 03 015925
- the information is characterized in that the degree of contribution of each of a plurality of items in the calculation of the similarity between the attribute information and the user preference information is defined.
- the first information processing device acquires information about the content, generates attribute information including a plurality of items based on the information about the content, and generates a first attribute corresponding to the item of the generated attribute information.
- Weighting information is stored, first weighting information that matches a condition of the content is extracted from the first weighting information, and transmitted in association with the attribute information.
- the attribute information and the first weighting information of the content composed of the items are obtained, and the preference information of the user composed of the plurality of items is stored, and the similarity between the attribute information and the user preference information is stored. Is calculated using at least one of the first weighting information and the second weighting information different from the first weighting information, and matches the user's preference.
- Recommendation information indicating the content is generated. Further, the first weighting information and the second weighting information define the degree of contribution of each of the plurality of items in calculating the similarity between the attribute information and the user preference information.
- a third information processing apparatus provides a general information processing apparatus based on acquisition means for acquiring content attribute information, first information indicating a user's preference, and second information indicating a general preference.
- Bias information generating means for generating third information indicating the bias of the user's preference with respect to the general preference.
- Each of the attribute information, the first information, and the third information can be composed of a plurality of items. Using the third information, the items of the attribute information and the first information are used. It is possible to further provide a selecting means for calculating a similarity for each of the items and selecting a content that matches the user's preference.
- Each of the first information and the second information can be composed of a plurality of items, and the bias information generating means includes, as third information, the first information and the second information.
- Information indicating an item having a low degree of similarity can be generated.
- Operation history acquisition means for acquiring the operation history of the user; and preference information generation means for generating first information based on the operation history acquired by the operation history acquisition means.
- the bias information generating means is configured to calculate, as first information, a first value obtained by counting, for each predetermined item, content that a user has previewed in a predetermined content group, and as a second information, a predetermined value. By calculating a second value obtained by counting all the contents of the content group for each predetermined item, and normalizing the first value with the second value, it is possible to generate third information. it can.
- the predetermined content group may be a set of contents broadcast or distributed during a predetermined period.
- the bias information generating means calculates a plurality of first values and a plurality of second values as a plurality of predetermined content groups, respectively, for a set of contents broadcast or distributed during a plurality of different periods. By normalizing the first value with the second value corresponding to the same content group, a plurality of pieces of third information can be generated.
- the predetermined content group may be a set of contents broadcast or distributed in a predetermined time zone.
- the first information may be information indicating an item representing the content that the user prefers among the attribute information of the content.
- the first information may be information indicating an item representing content that the user does not like in the content attribute information.
- a third information processing method includes a first obtaining step of obtaining first information indicating a user's preference, and a second obtaining step of obtaining second information indicating a general preference. Based on the first information obtained by the processing of the first obtaining step and the second information obtained by the processing of the second obtaining step, the bias of the user's preference with respect to the general preference. Bias information generating step of generating third information indicating the following.
- the program recorded on the third recording medium of the present invention includes a first acquisition step of acquiring first information indicating a user's preference, and a second information indicating a general preference. General preference based on the second acquisition step to be acquired, the first information acquired by the processing of the first acquisition step, and the second information acquired by the processing of the second acquisition step. And a bias information generating step of generating third information indicating bias of the user's preference.
- a third program includes: a first acquisition step of acquiring first information indicating a user's preference; a second acquisition step of acquiring second information indicating a general preference; Based on the first information acquired by the processing of the first acquisition step and the second information acquired by the processing of the second acquisition step, the bias of the user's preference with respect to the general preference is obtained. And a merchandise information generation step of generating third information indicating the following.
- third information indicating the bias of the user's preference is generated.
- FIG. 1 is a diagram illustrating television program broadcasting and distribution of stream data.
- FIG. 2 is a block diagram showing the configuration of the distribution server of FIG.
- FIG. 3 is a flowchart illustrating the program vector generation processing 1.
- FIG. 4 is a diagram illustrating EPG data.
- FIG. 5 is a diagram for explaining a program vector.
- FIG. 6 is a flowchart illustrating the program vector generation processing 2.
- FIG. 7 is a flowchart illustrating the grouping process 1.
- FIG. 8 is a flowchart illustrating the grouping process 2.
- FIG. 9 is a flowchart illustrating the title grouping process 1.
- FIG. 10 is a flowchart illustrating the title grouping process 2.
- FIG. 11 is a flowchart illustrating the title grouping process 3.
- FIG. 12 is a flowchart illustrating the title grouping process 4.
- FIG. 13 is a block diagram showing a configuration of the program recommendation processing device of FIG.
- FIG. 14 is a flowchart illustrating the positive history vector and negative history vector generation processing 1.
- FIG. 15 is a diagram for explaining the normal history vector.
- FIG. 16 is a flowchart for explaining the positive history vector and negative history vector generation processing 2.
- FIG. 17 is a flowchart illustrating the matching process 1.
- FIG. 18 is a flowchart illustrating the matching process 2.
- FIG. 19 is a flowchart illustrating the matching process 3.
- FIG. 20 is a flowchart illustrating the matching process 4.
- FIG. 21 is a flowchart illustrating the matching process 5.
- FIG. 22 is a flowchart illustrating the user-side effect vector generation processing 1.
- FIG. 23 is a flowchart illustrating the user-side effect vector generation processing 2.
- FIG. 24 is a flowchart illustrating the user-side effect vector generation processing 3.
- FIG. 25 is a flowchart illustrating the user-side effect vector generation processing 4.
- FIG. 26 is a flowchart for explaining the reaction vector generation process 1 on the user side.
- FIG. 27 is a flowchart for explaining the second reaction vector generation process on the user side.
- FIG. 28 is a flowchart illustrating a matching process including group recommendation.
- FIG. 29 is a flowchart illustrating a matching process using a user model.
- FIG. 30 is a flowchart illustrating the exception recommendation process.
- FIG. 31 is a block diagram illustrating a configuration of the television receiver in FIG. 1.
- FIG. 32 is a block diagram illustrating a configuration of the television display device in FIG. 1.
- FIG. 33 is a flowchart illustrating the recommendation information display process.
- FIG. 34 is a flowchart illustrating the automatic channel setting process.
- FIG. 35 is a block diagram showing a configuration of the recording / reproducing apparatus of FIG.
- FIG. 36 is a flowchart illustrating the automatic recording process.
- FIG. 37 is a block diagram illustrating a different configuration example of the distribution server.
- FIG. 38 is a block diagram showing a different configuration example of the program recommendation processing device.
- FIG. 39 is a diagram illustrating a different example of a network for television program broadcasting and stream data distribution.
- FIG. 40 is a block diagram illustrating a different configuration example of the distribution server. BEST MODE FOR CARRYING OUT THE INVENTION
- the broadcast station 1 transmits a terrestrial program broadcast or a satellite wave program broadcast via the satellite 2.
- the antenna 3 of the television receiver 4 receives a terrestrial or satellite program broadcast.
- the broadcast signal includes an EPG (Electronic Program Guide) as necessary.
- the distribution server 5 reads the streaming data from the streaming data database 6 and distributes the streaming data to the television receiver 4 via a network 8 including the Internet and other networks, and a metadata data base 7 Reads EPG, which is information about programs broadcast from broadcast station 1, or metadata that includes more detailed information than EPG, and, for each program, A PP is generated and distributed to the EPG receiving device 9 via the network 8 together with the EPG data.
- EPG Electronic Program Guide
- the processing uses the same information as the EPG superimposed on the general broadcast signal. You may use it. If the amount of information of the EPG superimposed on the general broadcast signal is not enough information for the processing described below, the processing includes the EPG superimposed on the general broadcast signal. In addition, metadata may be used alone or independently.
- information including metadata is used, and this information is referred to as EPG data. Shall be collectively referred to as
- the EPG receiving device 9 supplies the distributed EPG data to the television receiving device 4. Further, the EPG receiving device 9 supplies the program recommendation processing device 10 with the program vector PP distributed together with the EPG data.
- the television receiving device 4 having a tuner is connected to the television display device 11 having an operation unit or the control signal indicating the selection of a channel supplied from the recording / reproducing device 12 via the antenna 3 based on a control signal. It tunes to and receives terrestrial or satellite wave broadcast signals, and receives streaming data from the distribution server 5 via the network 8.
- the television receiver 4 receives the supply of the EPG data from the EPG receiver 9 and supplies the EPG data to the television display device 11 or the recording / reproducing device 12. If the received broadcast wave contains an EPG, the television receiver 4 separates it from the program signal and supplies it to the television display device 11 or the recording / reproducing device 12, respectively. .
- the program recommendation processing device 10 obtains the program vector PP from the EPG receiving device 9 and obtains the operation port from the television display device 11 and the recording / reproducing device 12. It generates recommendation information for recommending a program that matches the user's preference based on the information or the user's operation input, and supplies it to the television display device 11 and the recording / reproducing device 12.
- the television display device 11 displays a broadcast signal supplied from the television receiving device 4 or a reproduced signal supplied from the recording / reproducing device 12 based on a user's operation input, and recommends a program. Based on the recommendation information supplied from the processing device 10, a channel is automatically set or recommended program information is displayed.
- the television display device 11 supplies an operation log, which is a user's operation history, to the program recommendation processing device 10.
- the recording / reproducing device 12 records the broadcast signal supplied from the television receiver 4 on an attached recording medium or a built-in recording medium (for example, a hard disk) based on a user's operation input. On the basis of the recommendation information supplied from the program recommendation processing device 10, the broadcast signal supplied from the television receiving device 4 is automatically recorded on a mounted recording medium or a built-in recording medium. Further, the recording / reproducing apparatus 12 reproduces a program recorded on a mounted recording medium or a built-in recording medium, and outputs the program to the television display apparatus 11 for display. Further, the recording / reproducing apparatus 12 supplies an operation log, which is a user's operation history, to the program recommendation processing apparatus 10.
- a built-in recording medium for example, a hard disk
- the EPG receiving device 9, the television receiving device 4, the program recommendation processing device 10, the television display device 11, and the recording / reproducing device 12 have been described as different devices, respectively. It doesn't have to be configured individually.
- the EPG receiving device 9, the television receiving device 4, and the television display device 11 may be integrally configured as a television receiver 15-1 having a built-in tuner function.
- the recording / reproducing apparatus 12 may be integrally configured to be configured as a television receiver 15-2 having a recording function.
- the recording / reproducing apparatus 12 may be a so-called hard disk recorder having a large-capacity hard disk as a recording medium.
- the program recommendation processing device 10 is incorporated in a television receiver 15-1 having a built-in tuner function, and may be used as a television receiver 15-3 or a television receiver having a recording function.
- the television receiver 15-5-4 may be built in the 15-2.
- FIG. 2 is a block diagram showing the configuration of the distribution server 5.
- the data acquisition unit 21 acquires data from the metadata database 7 and the streaming data database 6, supplies the data to the data transmission unit 25, and supplies the EPG data to the metadata extraction unit 22.
- the data acquisition unit 21 executes a process of grouping the EPG data registered in the metadata database 7 according to the content thereof.
- the metadata extraction unit 22 extracts data necessary for generating the program vector PP from the EPG data supplied from the data acquisition unit 21, and supplies the data to the program vector generation unit 23.
- the program vector generation unit 23 generates a program vector PP based on the metadata, and associates the program side effect vector Ef PP stored in the data storage unit 24 as necessary. Then, the data is supplied to the data transmission unit 25.
- the data storage unit 24 stores the program side effect vector EfPP, which is information necessary for generating the program vector PP, as necessary.
- the data transmission unit 25 receives the EPG data supplied from the data acquisition unit 21.
- the streaming data and the program vector PP and the program side effect vector EfPP supplied from the program vector generation unit 23 are transmitted to the EPG receiving device 9 or the television receiving device via the network 8. Send to 4.
- a drive 26 is connected to the program vector generation unit 23 as necessary.
- a magnetic disk 31, an optical disk 32, a magneto-optical disk 33, and a semiconductor memory 34 are mounted on the drive 26 as necessary to exchange data.
- step S 1 the data acquisition unit 21 receives supply of EPG data composed of metadata from the metadata database 7.
- step S2 the metadata extraction unit 22 receives the supply of the EPG data from the data acquisition unit 21 and extracts the metadata required to generate the program vector PP. Output to 3.
- Figure 4 shows an example of metadata.
- the metadata includes, for example, the genre "Movie-I-Japanese", the movie title "Tokaido Mitani Kaidan", the date of the broadcast and the distributor, the date and time of the broadcast, the name of the broadcasting station to broadcast, and , Broadcast time, etc. are included.
- the metadata includes data such as the director's name, screenwriter's name, photographer (photographer), music staff, and performers, and the contents of this program, such as movie descriptions.
- step S3 the program vector generation unit 23 performs a morphological analysis on the title, contents, and the like included in the metadata as necessary, and decomposes the words into words. Specifically, the program vector generation unit 23 uses the title of the movie included in the metadata as a title and breaks it down into three words, “Tokaido”, “Mitani”, and “Kaidan”. In addition, as shown in Fig. 4, the program vector generation unit 23, as shown in Fig. 4 in the metadata, describes the Japanese movie “Mitsuya Kaidan,” which is famous for its “59 Shinseiho style beautiful beauty”.
- step S4 the program vector generation unit 23 vectorizes each item included in the metadata, generates a program vector PP, and ends the processing.
- the generated program vector PP is output to the data transmission unit 25 and transmitted to the EPG reception device 9 via the network 8. Items can be vectorized by arranging all detail elements as one column, or by separating them into large items, and then vectorizing each item.
- Tm ⁇ title1, title2, ⁇ ⁇ ⁇ , Genre (Genre)
- Gm ⁇ Drama, Variety, Sports, Film, Music, Children / Education, Education Z Documents, News / Reports, Others ⁇
- Hour Hm ⁇ Morning, Lunch, Evening, Golden, Midnight ⁇
- Broadcasting Station TV Station
- Sm ⁇ NNK General, NNK Education, Asia TV, TTS, P J, Television, Toto, NNK Satellite 1, NNK Satellite 2, WOWO ⁇
- Performer (Person) Pm ⁇ person A, person B, ⁇ person a, person b, ⁇ ⁇ ⁇ Content (Keyword) It is vectorized as Km2 ⁇ kwl, kw2, ⁇ ⁇ ⁇ .
- broadcasting station S111 ⁇ NNK General, NNK Education, Asia Television, TT S, Buji, Tele Nichi, Toto, NNK Satellite 1, NNK Satellite 2, WOW O ⁇
- Gm ⁇ drama, variety, sports, film, music, Z education for children, culture / documentation, news Z news, etc. ⁇
- the frequency of words included in the vector, etc. is associated with the weight (numerical value).
- “Tokaido-1” means that the frequency of the word “Tokaido” is "1".
- the program side effect vector Ef PP indicating what elements are important for each genre is stored in the data storage section 24 as the program side effect vector information
- the program side The effect vector EfPP may be transmitted in association with the program vector PP.
- the program side effect vector EfPP is set corresponding to the major items of the program vector PP.
- steps S11 to S14 processing similar to the processing in steps S1 to S4 described using FIG. 3 is performed. That is, EPG data is supplied from the metadata database 7, metadata required to generate the program vector PP is extracted from the EPG data, and the title, contents, etc. included in the metadata are extracted. Is morphologically analyzed as necessary, and decomposed into words. Then, each item included in the metadata is vectorized to generate a program vector PP.
- step S16 the program vector generation unit 23 associates the effect vector EfPP extracted in step S15 with the program vector PP generated in step S14, and performs processing. Is terminated.
- a program vector PP is generated, and the program side effect vector EfPP for weighting important items is associated with the program genre based on the genre of the program, and is associated via the network 8. Is transmitted to the EPG receiver 9.
- the program vector PP is generated.For example, by grouping programs by their attributes, the program vector PP can be accurately created with a small amount of calculation. be able to.
- Program grouping can be generated, for example, by serial drama, programs of the same genre in one-week units, or programs by performers in program units (13 weeks).
- the grouping process 1 in the case of grouping serial drama will be described with reference to the flowchart of FIG.
- step S31 the data acquisition unit 21 retrieves the EPG data registered in the metadata database 7 from the EPG data, for example, with the same title, the same broadcasting station, and the broadcast time at the same time on weekdays or the same Extract programs that meet a predetermined condition (condition for grouping) such as.
- step S32 the data acquisition unit 21 groups the extracted programs and attaches a group ID to the EPG data of the corresponding program.
- step S33 the metadata extraction unit 22 has the same group ID, that is, the metadata necessary for generating the program vector of the first broadcast of the program recognized as a serial drama. Is extracted.
- step S35 the program vector generation section 33 fixes the program vector PP of the corresponding group ID to the program vector for the first broadcast, and the process ends. .
- the serial drama is grouped, and the program vector is unified. Further, the group ID and the program vector PP may be stored in the data storage unit 24 in association with each other.
- the content of the first time is a commentary on the entire program, but the content other than the first time is often a commentary on that episode, and represents the content of the entire program.
- the metadata other than the content is almost the same every time, the number of program vector generation processes must be reduced by generating the program vector PP using the first EPG data. In addition to this, it is possible to more accurately generate a program vector PP that matches the program characteristics.
- step S31 the process of adding the same ID to the EPG data of the serial drama has been described.However, if the EPG data includes information for distinguishing the serial drama in advance, the process of step S31 is performed. By omitting it, the same ID may be added to the EPG of the serial drama with reference to the information for identifying the serial drama included in the EPG data.
- step S51 the data acquisition unit 21 refers to the EPG data registered in the metadata database 7 and adds a cluster code corresponding to the content of the metadata to the EPG data of the program.
- the first cluster code of the smallest digit such as code 3 is determined. If it is not a serial drama, the first cluster code of the least significant digit is 0.
- the data relating to the genre of the metadata registered in the metadata database 7 is referred to, and for each genre, for example, the second digit (1 0 A second cluster code having a numerical value in the () position is determined.
- the second or lower digit (100) The third cluster code represented by using the above order is determined. Then, the total value of the first to third cluster codes becomes the cluster code added to the EPG of the program.
- step S52 the data acquisition unit 21 determines whether or not the corresponding EPG is a serial drama based on whether or not the first digit of the cluster code is 0.
- step S52 If it is determined in step S52 that the drama is a serial drama, in steps S53 and S54, the same processing as in steps S33 and S34 in FIG. 7 is performed. That is, the EPG of the first broadcast is extracted, and the program vector generation processing described with reference to FIG. 3 or FIG. 6 is executed.
- step S55 the program vector generation unit 33 fixes the program vector PP of the serial drama to the program vector PP for the first broadcast, and sets the program vector PP as the program vector PP. Then, the generated cluster codes are set in association with each other, and the process is terminated. If it is determined in step S52 that it is not a serial drama, in step S56, the program vector generation processing described with reference to FIG. 3 or FIG. 6 is executed. In step S57, the program vector generation unit 33 associates the generated cluster code with the program vector PP, and the process ends.
- the program vector PP is generated as described with reference to FIGS. 3 to 8, so that the program vector PP corresponding to a new term or genre is always generated. Can be generated.
- the generated program vector PP is received by the EPG receiving device 9 via the network 8 together with the EPG data, and supplied to the thread and recommendation processing device 10.
- the grouping process may be performed by morphologically analyzing the title, decomposing the title into words, and attaching a group ID to each word.
- step S61 the data acquisition unit 21 refers to the EPG data registered in the metadata database 7, extracts a title from the registered metadata, and generates a program vector generation unit 2 Supply to 3.
- step S62 the program vector generation unit 23 performs a morphological analysis on the title and breaks it down into words. Specifically, if the title of the movie included in the metadata is “Tokaido Mitani Kaidan”, this will be morphologically analyzed as a title, so “Tokaido”, “Miya”, and “Kaidan” You get three words.
- step S63 the program vector generation unit 23 extracts one of the analyzed word or a group of words composed of a plurality of words, and extracts the word from the data storage unit 24. Then, a group ID corresponding to the extracted word or word group is extracted from.
- a word group composed of a plurality of words is a word group generated by a combination of words obtained by morphological analysis. If the words are "Tokaido”, “Mitani”, and “Kaidan”, the words are “Tokaido ⁇ Mitani”, “Tokaido 'Kaidan”, and "Mitani'Kaidan”.
- step S64 the program vector generation unit 23 determines whether the corresponding group ID has been extracted from the data storage unit 24.
- step S65 the program vector generation unit 23 associates a new group ID with the extracted word or a word group including a plurality of words.
- the program vector generation unit 23 causes the data storage unit 24 to store a word or a word group including a plurality of words and a corresponding group ID.
- step S66 the program vector generation unit 23 sets the title to It is determined whether a group ID has been extracted for all the constituent words or a group of words composed of a plurality of words.
- step S66 If it is determined in step S66 that the group ID has not been extracted for all words constituting the title or for a word group composed of a plurality of words, the process returns to step S63, and the process returns to step S63. Subsequent processing is repeated.
- step S66 If it is determined in step S66 that all the words constituting the title or a group of words composed of a plurality of words has been extracted with a group ID, in step S67, the program vector generation unit 2 In step 3, the extracted group ID is associated with the program vector, and the process ends.
- the words constituting the title or the group ID corresponding to the group of words are associated with the program vector, and the data transmitting unit 25 transmits the television receiving device via the network 8 via the network 8. 4 or transmitted to EPG receiver 9.
- the title drama “Two Years A-Gumi Ginpachi-sensei” and the special program “Two-year A-Gumi Ginpachi-sensei Special” can be grouped into the same group.
- the word match rate is calculated on a round-robin basis for a program title for a predetermined period, such as two weeks, one month, and six months, and the word match rate is
- a title grouping process 2 for performing grouping based on the matching rate of words constituting a title will be described with reference to the flowchart of FIG.
- step S401 and step S402 the same processing as step S61 and step S62 described with reference to FIG. 9 is executed. That is, the data acquisition unit 21 refers to the EPG data registered in the metadata database 7, extracts the title from the registered metadata, and supplies the title to the program vector generation unit 23. Then, the program vector generation unit 23 morphologically analyzes the title and breaks it down into words.
- step S403 the program vector generation unit 23 calculates, based on the analyzed words, the degree of matching of words between titles, that is, the matching rate indicating the rate of matching of words. .
- the title “Two Years A-Gumi Ginpachi-sensei” and the title “Two-year A-Gumi Ginpachi-sensei Special” are “2”, “Year”, “A j” “Gumi” and “Ginpachi”, respectively.
- the matching rate of the words that make up the title of these two programs is , 6Z7 is 85.7%.
- step S404 the program vector generation unit 23 determines whether or not the words match at least a predetermined value such as 70%.
- a predetermined value such as 70%.
- the threshold value of the matching rate may be any numerical value other than 70%.
- Step S 4 0 word, if it is determined that they match a predetermined value or more, such as 70%, in step S 4 0 5, the program vector generating unit 2 3, its Assign the same group ID to these programs.
- the program vector generation unit 23 stores the matched word or word group and the corresponding group ID in the data storage unit 24.
- step S404 If it is determined in step S404 that the matching rate is equal to or less than a predetermined value such as 70%, or if the processing in step S405 ends, the program The vector generator 23 determines whether or not the brute force of the title has been completed.
- step S 406 If it is determined in step S 406 that the brute force of the title has not been completed, the process returns to step S 403, and the subsequent processes are repeated. If it is determined in step S406 that the brute force of the title has been completed, the process is terminated.
- the program vector is associated with the group ID based on the matching rate of words constituting the title, and the data transmission unit 25 transmits the television reception device via the network 8 to the television receiver. 4 or transmitted to the EPG receiving device 9, for example, programs of similar titles such as a serial drama and a special program can be processed as the same group.
- a broadcast station for example, a broadcast station, a program genre, or a broadcast start time may be added to the grouping condition.
- the title is composed of a small number of words including "news". Therefore, the processing described with reference to FIG.
- the broadcast station matches in addition to the word match rate, it will be considered as the same group.
- steps S421 to S424 the same processing as steps S401 to S404 described using FIG. 10 is performed. That is, the data acquisition unit 21 refers to the EPG data registered in the metadata database 7, extracts a title from the registered metadata, and supplies the title to the program vector generation unit 23.
- the program vector generation unit 23 morphologically analyzes the title and decomposes the title into words. Then, the program vector generation unit 23 calculates the degree of matching between the words based on the analyzed words, and determines whether the words match at least a predetermined value such as 70%, for example. Judge.
- step S424 If it is determined in step S424 that the words match at least a predetermined value such as 70%, in step S425, the program vector generation unit 23 executes It is determined whether the broadcasting stations match.
- step S425 If it is determined in step S425 that the broadcasting stations of these programs match, in step S425, the program vector generation unit 23 assigns the same group ID to those programs. Correspond. Also, the program vector generation unit 23 stores the matched word or word group and the corresponding broadcasting station and group ID in the data storage unit 24.
- step S424 If it is determined in step S424 that the match rate is equal to or less than a predetermined value such as 70%, if it is determined in step S425 that the broadcast stations of these programs do not match, Alternatively, after the processing in step S 426 is completed, in step S 427, the program vector generation unit 23 determines whether or not the round robin of the title has been completed.
- a predetermined value such as 70%
- step S 427 If it is determined in step S 427 that the brute force of the title has not been completed, the process returns to step S 423, and the subsequent processes are repeated. If it is determined in 4 27 that the brute force of the title has been completed, the processing is terminated.
- the program vector is associated with the group ID based on the matching rate of the broadcast station and the matching rate of the words constituting the title, and the data transmitting unit 25 transmits the program ID via the network 8. Since the broadcast is transmitted to the television receiver 4 or the EPG receiver 9, for example, when programs having similar titles are in the same group, news programs of other stations are in the same group. Can be prevented.
- the grouping is performed on the condition that the same broadcasting station is used in addition to the coincidence rate of the words constituting the title.
- the grouping may be performed by setting the broadcast time zone, genre, and the like as conditions other than the matching rate of the words constituting the title.
- the grouping is executed based on the matching rate of the words constituting the title, with the condition that the broadcast times match within a predetermined time range.
- steps S444 to S444 the same processing as in steps S401 to S404 described with reference to FIG. 10 is executed. That is, the data acquisition unit 21 refers to the EPG data registered in the metadata database 7, extracts the title from the registered metadata, and supplies it to the program vector generation unit 23.
- the program vector generation unit 23 morphologically analyzes the title and decomposes the title into words. Then, the program vector generation unit 23, based on the analyzed words, The degree of matching of words between the titles is calculated, and it is determined whether or not the words match at least a predetermined value such as 70%.
- step S444 If it is determined in step S444 that the words match at least a predetermined value such as 70%, in step S445, the program vector generation unit 23 executes It is determined whether or not the broadcast start time of the program is coincident with a shift within a predetermined range such as one hour, for example.
- step S446 determines The same group ID is associated with the program.
- the program vector generation unit 23 stores the matched word or word group, the range of the corresponding broadcast start time, and the group ID in the data storage unit 24. If it is determined in step S444 that the matching rate is equal to or less than a predetermined value such as 70%, in step S444, the broadcast start times of those programs are shifted beyond a predetermined range. Is determined, or after the processing in step S446 is completed, in step S444, the program vector generation unit 23 determines whether or not the rounding of the title has been completed. I do.
- step S444 If it is determined in step S444 that the brute force of the title has not been completed, the process returns to step S444, and the subsequent processes are repeated. If it is determined in step S447 that the brute force of the title has been completed, the processing is terminated.
- the program vector is associated with a match including a deviation within a predetermined range of the broadcast start time and a group ID based on the match rate of words constituting the title, and the data transmission unit 25, the broadcast is transmitted to the television receiver 4 or the EPG receiver 9 via the network 8 so that, for example, when programs having similar titles are in the same group, the broadcast time of a special program or the like As a result, it is possible to prevent programs that should be detected as being in the same group from being detected as being in the same group. 3 015925
- FIG. 13 is a block diagram showing a configuration of the program recommendation processing device 10.
- the data acquisition unit 41 acquires the program side effect vector EfPP corresponding to the program vector PP transmitted from the distribution server 5 and the program number PP.
- the program vector extraction unit 42 converts the program vector PP acquired by the data acquisition unit 41 from the program vector PP required for matching processing or the program vector PP required for user model generation. Is extracted, and if necessary, supplied to the matching processing unit 43 together with the program side effect vector EfPP corresponding to the program vector PP.
- the operation input unit 44 includes input devices such as a keyboard, a touchpad, and a mouse, and receives input of initial registration information input by a user and a topic for generating a user model.
- Output to The initial registration storage unit 45 registers the initial registration contents supplied from the operation input unit 44 and topics for generating a user model, and, if necessary, the operation log acquisition unit 46 or a matching process. Supply to part 43. Further, the contents stored in the initial registration storage unit 45 are sequentially updated based on a user operation input from the operation input unit 44.
- the information that is initially registered includes, for example, information indicating programs that the user does not like, such as disliked genres, disliked keywords, disliked performers, favorite genres, favorite keywords, favorite performers, etc. There is information indicating programs that the user prefers.
- the operation port acquisition unit 46 acquires operation logs from the television display device 11 or the recording / reproducing device 12, classifies the information into positive history and negative history, and performs initial registration as necessary. Referring to the information stored in the storage unit 45, the program vector PP corresponding to the positive history and the negative history is read out of the program vector PP acquired by the data acquisition unit 41, and is read. 4 7 and the negative history storage section 4 8 are supplied and stored.
- the regular history storage unit 47 stores the supplied regular history and generates a regular history vector UP.
- the negative history storage unit 48 stores the supplied negative history and generates a negative history vector MUP. The generated positive history vector UP and negative history vector MUP are supplied to the matching processing unit 43.
- the correct history means that the user actively tries to watch, in other words, This information is used to extract program candidates that are considered to be appropriate.
- This information is used to extract program candidates that are considered to be appropriate.
- the metadata of the program is stored in the positive history storage unit 47 as good impression metadata.
- the main history storage unit 47 obtains the total of the main history for each detailed item or for each major item, and generates the main history vector UP.
- negative histories are information used to exclude programs that users are reluctant to watch, in other words, programs that they do not like from recommended programs. Items that were disliked, programs that were deleted without being viewed after recording, or programs that were proposed to the user as a recommended program list by the processing described below were not accepted by the user, and were not viewed or recorded.
- the negative history storage unit 48 calculates the total of the negative histories for each detailed item or for each major item, and generates a negative history vector MUP.
- the matching processing unit 43 includes the program vector extracted from the program vector extraction unit 42 and the positive history vector UP supplied from the positive history storage unit 47 or the negative history storage unit 48, or Negative history vector Verify matching with MUP.
- the matching processing unit PP positive history vector UP, or negative history vector MUP is vectorized by arranging all the detailed elements in a single line, the title, keyword, etc. will consist of multiple words. Therefore, one word and an item such as a genre have the same weight in the vector. Therefore, the matching processing unit
- the vector computing unit 62 executes a matching process between the program vector PP and the positive history vector UP or the negative history vector MUP.
- the vector calculation unit 62 is used when the program vector PP, the positive history vector UP, and the negative history vector MUP are represented by a vector in which all the elements of the detailed items are arranged in one row.
- the program vector PP and the positive history vector are obtained as shown in the following equation (1).
- the similarity SimUP with the UP is calculated, and the similarity SimMUP between the program vector PP and the negative history vector MUP is calculated as shown in equation (2).
- the cosine distance is a value obtained by dividing the inner product of two vectors by the product of the absolute values of each vector, as shown in Equations (1) and (2).
- PP indicates the program vector PP
- UP indicates the positive history vector UP
- MUP indicates the negative history vector MUP.
- “ ⁇ ” Indicates dot product and "X” indicates element multiplication (scalar operation).
- the vector arithmetic unit 62 sets the program vector for each major item.
- the similarity between the program PP and the negative history vector MUP is calculated for the similarity between the program PP and the positive history vector MUP, and the sum of the similarity is calculated for each major item. Similarity SimMUP can be calculated.
- the positive history vector UP is the title Tup ⁇ school—1, ghost story 1, toilet—1 ⁇
- a positive history vector UP ⁇ title Tup, Jan Gup, cast Pup, script Z original / directed Aup, content (keyword) Kup ⁇ and negative history vector MUP
- Negative history vector MUP ⁇ Title Tonore Tmup, Genre Gmup, Performer Pinup, Screenplay Z Original / Direction Atnup, Content (Keyword) Kmup ⁇
- cos 0 t is the cosine distance between the program vector PP and the regular history vector UP or the negative history vector MUP in the major item “Title”
- cos e ⁇ is the major item “ in the genre "
- the program vector PP is a cosine distance between the positive history vector UP or the negative history vector MUP
- co S S p is, that put the large item” performer "
- positive history is a cosine distance between the vector UP or the negative history base-vector MUP
- COS 0 a is, in large item "screenwriter / original Z demonstration”
- Cos 0 k is the cosine distance between the program vector PP and the positive history vector UP or the negative history vector MUP in the major item “content”.
- the normalization processing by the normalization processing unit 61 need not be performed.
- the frequency tends to accumulate, for example, compared to items such as broadcasting stations and genres. In comparison, for items such as titles and contents, as the history increases, the number of words increases, but the frequency of each word is unlikely to increase.
- the vector calculation unit 62 stores the user's initial registration information stored in the initial registration storage unit 45, the program side effect vector EfPP transmitted in association with the program vector PP, or Weighting is performed by the user side effect vector EfUP (described later) or the user side effect vector EfMUP (described later) generated and registered in the information registration unit 63, and the similarity SimUP and similarity are calculated. SitnMUP can also be calculated.
- the vector computing unit 62 calculates, for example, a predetermined number of high-order programs (for example, 10) having a high similarity with the positive history vector, Further, the similarity SimMUP with the history vector MUP is obtained, and SimUP—SimMUP is calculated, and a predetermined number (for example, 3) of programs having higher calculation results are output to the recommended information output unit 49 as recommended programs.
- a predetermined number of high-order programs for example, 10
- SimMUP with the history vector MUP is obtained, and SimUP—SimMUP is calculated, and a predetermined number (for example, 3) of programs having higher calculation results are output to the recommended information output unit 49 as recommended programs.
- the vector calculation unit 62 registers the recommended priority group in the user information registration unit 63 based on the information of the recommended program.
- the program corresponding to the recommendation priority group is recommended with priority.
- the vector operation unit 62 generates a user model vector by filtering the program vector PP using the topics stored in the initial registration storage unit 45, and generates the user information registration unit 63 Can be registered to perform the matching process. Details of the user model will be described later.
- the user information registration unit 63 stores the initial registration contents of the user supplied from the initial registration storage unit 45, or the positive history vector UP or the positive history vector supplied from the positive history storage unit 47 or the negative history storage unit 48. Based on the negative history vector MUP, the user side effect vector EfUP and the counter effect vector E deposit UP are generated and stored.
- the user side effect vector EfUP is a beta vector that indicates to the user which of the major items is important for program selection and is the item that is weighted for program selection. Alternatively, it is a vector indicating the user's preference in each item.
- the reaction vector EfMUP is a vector that indicates to the user which of the major items are insignificant for program selection and are not weighted for program selection. , Or, for each item, a vector indicating items that the user does not like.
- the user-side effect vector EfUP and the counter-effect vector EfMUP are larger in the matching between the program vector PP and the positive history vector UP or negative history vector MUP. This defines whether or not to contribute.
- the user-side effect vector EfUP and the counter-effect vector EfMUP may be set by the user or may use a predetermined value, but are registered in the initial registration storage unit 45. It may be generated based on the initial registration contents of the user.
- the program vector PP Tol T tn, Genre Gm, Time Zone Hm, Broadcasting Station Sm, Performer Pm, Script / Original Z Direction Am, Content Km ⁇
- the genre is important to the user.
- the effect vector is set to EfUP2 (1, 5, 1, 1, 1, 1, 1, 1, 1).
- the effect vector EfUP (1, 3, 1, 1, 5, 5, 1, 1) is set.
- the user-side effect vector EfUP and the counter-effect vector EfMUP are generated based on the positive history vector UP or the negative history vector MUP, or by counting programs watched by the user in a certain period of time. It may be done. Further, the user-side effect vector EfUP and the counter-effect vector EfMUP can be generated for each genre. A method for generating the user-side effect vector EfUP or the counter-effect vector EfMUP will be described later with reference to FIGS.
- the user information registration unit 63 registers information of the recommended priority group, a user model vector, and the like generated by the process of the vector calculation unit 62 as necessary.
- programs that are highly similar to the positive history vector UP are used to select programs that the user does not like using the negative history. Even without performing the process of removing (programs that the user is reluctant to watch), for example, it is possible to determine a recommended program using only the normal history.
- the recommended information output unit 49 registers the recommended program information supplied from the matching processing unit 43 in the recommended program list 50, and also registers the information in the television display device 11 or the recording / reproducing device 12.
- the recommended program list 50 is configured to be detachable from the program recommendation processing device 10, and the recommendation output from the recommended program output unit 49. Register program information.
- the matching processing section 43 is connected to the drive 51 as necessary.
- a magnetic disk 71, an optical disk 72, a magneto-optical disk 73, and a semiconductor memory 74 are mounted on the drive 51 as necessary to exchange data.
- step S71 the operation log acquisition unit 46 supplies the initial registration content read from the initial registration storage unit 45 to the negative history storage unit 48.
- the negative history storage unit 48 generates a negative history vector MUP by referring to the supplied initial registration contents.
- step S72 the operation log acquisition unit 46 determines whether the initial registration contents have been changed based on the registration contents stored in the initial registration storage unit 45. If it is determined in step S72 that the initial registration contents have been changed, the processing proceeds to step S72.
- step S73 the operation log acquisition unit 46 transmits the operation log from the television display device 11 or the recording / reproducing device 12 It is determined whether or not is supplied. If it is determined in step S73 that the operation log has not been supplied, the process returns to step S72, and the subsequent processes are repeated.
- step S74 the operation port acquisition unit 46 determines whether or not the supplied operation port has a correct history. . For example, if the operation log is a recording operation, the program vector PP of the program corresponding to the operation is a normal history, and if the operation log is erasure of recorded data that is not being played, the operation log corresponds to the operation. The program vector PP of the program has a negative history. It becomes.
- step S74 if the supplied operation log is determined to be the correct history, in step S75, the operation log acquisition unit 46 responds to the operation log determined to be the correct history
- the program vector pp to be extracted is extracted from the data acquisition unit 41 and supplied to the main history storage unit 47.
- the main history storage unit 47 additionally stores the supplied program vector PP as a main history.
- step S76 the main history storage unit 47 calculates the total of the main history program vectors PP for each detailed item or for each major item, and generates the main history vector UP. I do. After the end of the process in the step S76, the process returns to the step S72, and the subsequent processes are repeated.
- step S 7 4 supplied operation log is when it is determined not to be a positive history, supplied operation log is because it is a negative history, in step S 7 7, operation hole grayed acquisition unit 4-6
- the program vector PP corresponding to the operation port determined to be a negative history is extracted from the data acquisition unit 41 and supplied to the negative history storage unit 48.
- the negative history storage unit 48 additionally stores the supplied program vector PP as a negative history.
- step S78 the negative history storage unit 48 calculates the total sum of the negative history program vector PP for each detailed item or for each major item, and generates a negative history vector MUP. I do. After the end of the process in step S78, the process returns to step S72, and the subsequent processes are repeated.
- History history vector / up a numerical value indicating the vector sum is described after each detailed item. For example, as shown in Fig.
- the major items of the positive history vector UP are the title, genre, performer, script / original Z production, and content (keyword). Although the number of items is described as being smaller than that of the program vector PP described using, it is needless to say that the same large items as the program vector PP may be used.
- the negative history vector MUP is generated before the operation log is input, based on the contents of the initial registration. May be registered so that the normal history vector UP is generated before the operation log is input.
- the positive history vector UP or the negative history vector MUP is generated using only the operation log without generating the positive history vector UP or the negative history vector MUP based on the initial registration. As described above, by independently generating and retaining the positive history vector UP and the negative history vector MUP, it is possible to more accurately perform the matching process with the user's preference. it can.
- the positive history and the negative history may be determined more precisely.
- the positive history vector UP and the negative history vector are calculated using the sum of the program vectors PP corresponding to the positive history and the negative history in all items.
- the total of the program vectors PP corresponding to the positive history and the negative history is accumulated, for example, by genre, and the positive history vector UP and the negative history vector MUP are generated for each genre. You may do it.
- performer B who frequently appears in dramas even though he is not a favorite actor, has a higher score in the regular history vector UP than comedian A, who rarely plays in dramas. It may go wrong.
- a documentary in which performer B who frequently appears in a drama will be recommended, rather than a variety in which comedian A appears.
- the positive history and the negative history are accumulated for each genre, and based on this, the positive history vector UP and the negative history vector MUP may be generated for each genre.
- a history vector UP and a negative history vector MUP may be generated.
- the matching processing unit 43 verifies the matching between the positive history vector UP and the negative history vector MUP generated in this way and the supplied program vector PP, thereby enabling the user to check the matching. It is possible to generate recommended program information that correctly reflects preferences.
- steps S81 to S84 the same processing as in steps S71 to S74 in FIG. 14 is performed. That is, a negative history vector MUP is generated by referring to the initial registration, and it is determined whether or not the initial registration content has been changed.If the content has not been changed, whether the supplied operation log has the correct history It is determined whether or not.
- step S85 the operation log acquisition unit 46 responds to the operation log determined to be the correct history
- the program vector PP is extracted from the data acquisition unit 41 and supplied to the main history storage unit 47.
- the main history storage unit 47 extracts the genre of the supplied program vector PP.
- step S86 the main history storage unit 47 additionally stores the program vector PP extracted from the data acquisition unit 41 as a main history for each genre.
- step S87 the main history storage unit 47 stores, for each detailed item or for each major item, the program vector of the main history in the genre in which the program vector is additionally stored. Then, a positive history vector UP of the corresponding genre is generated. After the processing in step S87 is completed, the processing returns to step S82, and the subsequent processing is repeated.
- step S84 If it is determined in step S84 that the supplied operation log is not a positive history, the supplied operation log is a negative history. Then, the program vector PP corresponding to the operation log determined to be “1” is extracted from the data acquisition unit 41 and supplied to the negative history storage unit 48. The negative history storage unit 48 extracts the genre of the supplied program vector PP.
- step S89 the negative history storage unit 48 additionally stores the program vector PP extracted from the data acquisition unit 41 for each genre as a negative history.
- step S90 the negative history storage unit 48 stores the negative history program vector PP vector in the genre in which the program vector is additionally stored for each detailed item or for each major item. And calculate the negative history vector MUP of the corresponding genre. Generate. After the processing in step S90 ends, the processing returns to step S82, and the subsequent processing is repeated.
- a positive history vector UP and a negative history vector MUP are generated for each genre, so that the user's preferences can be reflected more precisely without dulling the user's preferences. It is possible to generate recommended program information that accurately reflects user preferences.
- the program vector PP, positive history vector UP, and negative history vector MUP are represented by a vector in which all the elements of the detailed items are arranged in one line.
- the matching process 1 in this case will be described.
- step S101 the program vector extraction unit 42 extracts the program vector PP of a plurality of programs (for example, a program broadcasted in a predetermined time zone) from the data acquisition unit 41, and executes a matching processing unit. 4 It is supplied to the normalization processing section 61 of 3.
- the normalization processing unit 61 determines the supplied program vector PP and the components and components of the regular history vector UP read out from the regular history storage unit 47 for the titles and contents composed of words. Normalization is performed, and the normalized result is supplied to the vector calculation unit 62.
- step S102 the vector operation unit 62 of the matching processing unit 43 uses the above-described equation (1) to calculate the cosine distance between the program vector PP of a plurality of programs and the positive history vector UP. Calculate a certain similarity SimUP.
- step S103 the vector calculation unit 62 compares the similarity SiraUP indicating the similarity between the program vector PP and the positive history vector UP calculated in step S102, and sets the similarity. For example, a predetermined number of program vectors PP such as 10 is extracted from the highest degree.
- step S104 the vector operation unit 62 determines in step S103.
- the similarity SimMUP which is the cosine distance between the extracted program vector PP and the negative history vector MUP read from the negative history storage unit 48, is calculated by using the above-described equation (2).
- step S105 the vector operation unit 62 calculates the similarity with the positive history vector UP (that is, the cosine distance) SiraMUP—the similarity with the negative history vector (that is, the cosine distance) SimMUP Then, a predetermined number (for example, one) of program vectors or EPG data which are higher ranks are extracted as recommendation information, output to the recommendation information output unit 49, and are output to the recommendation program list 50. In addition to the registration, the information is output to the television display device 11 and the recording / reproducing device 12, and the processing is terminated.
- a predetermined number for example, one
- the program vector PP, the positive history vector UP, and the negative history vector MUP are represented by a vector in which all the elements of the detailed items are arranged in one column. Based on the similarity between the vector PP and the positive history vector UP and the similarity between the program vector PP and the negative history vector, it is possible to determine a recommended program that matches the user's preference. .
- the cosine distance is calculated for each large item, and the sum is used as the similarity SimUP and similarity SitnMUP.
- the matching process 2 in which a recommended program is determined by calculation, will be described.
- step S111 the program vector extraction unit 42 extracts a program vector PP of a plurality of programs (for example, a program broadcast in a predetermined time zone) from the data acquisition unit 41, and performs a matching process. It is supplied to the vector operation unit 62 of the unit 43. The vector operation unit 62, for each of the major items of the supplied program vector PP and the positive history UP read out from the main history storage unit 47, performs the Calculate the cosine distance.
- a program vector PP of a plurality of programs for example, a program broadcast in a predetermined time zone
- step S112 the solid-state calculation unit 62 sums the values of the cosine distances calculated for each item in step S111 using the above equation (4), and calculates the similarity SiraUP. calculate.
- step SI 13 the vector operation unit 62 compares the similarity SimUP between the program vector PP and the positive history vector UP calculated in step S 112, and For example, a predetermined number of program vectors PP such as 10 is extracted.
- step S114 the vector computing unit 62 stores the program vector PP extracted by the processing in step S113 and the negative history vector MUP read from the negative history storage unit 48, respectively. Calculate the cosine distance between the program vector PP and the negative history vector MUP for the major items of.
- step S115 the vector computing unit 62 sums the values of the cosine distance calculated for each item in step S114 using the above-described equation (4), and calculates the similarity SimMUP. calculate.
- step S116 the vector calculation unit 62 generates ⁇ similarity SimUP, which is the cosine distance between the program vector PP and the regular history vector UP ⁇ — ⁇ program vector PP and the negative history vector
- the similarity SimMUP ⁇ which is the cosine distance of the program, is calculated, and the program vector PP or EPG data of a predetermined number (for example, three) of the higher-ranked programs is extracted as recommendation information.
- the program is output and registered in the recommended program list 50, and is also output to the television display device 11 and the recording / reproducing device 12, thereby completing the process.
- the sum of the calculation results is calculated as the similarity SimUP and the similarity SimMUP for each large item without normalizing the item indicated by the word, so that the detailed elements belonging to different large items Based on the similarity between the program vector PP and the positive history vector UP and the similarity between the program vector PP and the negative history vector MUP without being affected by the bias of the history overlap, It becomes possible to determine recommended programs that match the taste.
- the matching process may be performed by using the above-mentioned program side effect vector EfPP, user side effect vector EfUP, or user side counter effect vector EfMUP. Whether or not to use the program side effect vector EfPP, the user side effect vector EfUP, or the user side effect vector EfMUP may be set by the user.
- a program vector PP a positive history vector UP and a negative history vector MUP power S, and a solid line in which all elements of detailed items are arranged in one row.
- a description will be given of a matching process 3 in which a matching process is performed using the program side effect vector EfPP or the user side effect vector EfUP depending on the user setting when the program is expressed in terms of the user's setting.
- step S121 the vector operation unit 62 receives the program effect vector EfPP and the user effect input by the user using the operation input unit 44 and registered in the initial registration storage unit 45. Acquires the usage setting contents of the vector EfUP or the user side reaction vector EfMUP.
- the effect vector usage setting information is information indicating whether to use the program side effect vector EfPP, the user side effect vector EfUP, or the user side effect vector EfMUP to perform weighting in the matching process. is there.
- step S122 the vector calculation unit 62 reads the user side effect vector EfUP from the user information registration unit 63 as necessary, and uses the following equation (5) to program the program. Calculate the cosine distance between the vector PP and the normal history vector UP, and use it as the similarity SimUP. epd 1 'eud r p 1 ' u 1 + epd 2 'eud 2 ' p 2 'u 2 + ..,
- SI mUP I nn II.
- the user side effect vector EfUP may be set by the user, may be set based on the initial settings of the user, or may be generated in the user information registration unit 63. There may be. The details of the generation of the user side effect vector EfUP will be described later with reference to FIGS.
- step S123 the vector calculation unit 62 compares the similarity SimUP between the program vector PP and the normal history vector UP calculated in step S122, and determines the highest similarity. For example, a predetermined number of program vectors PP such as 10 are extracted.
- step S124 the vector calculation unit 62 reads the user side reaction vector EfMUP from the user information registration unit 63 as necessary, and uses the following equation (6) to execute step S1. 1 Calculate the cosine distance between the program vector PP extracted in 23 and the negative history vector no MUP.
- the user side reaction vector EfMUP may be set by the user, may be set based on the user's initial settings, or may be generated by the user information registration unit 63. It may be. Details of the generation of the user side reaction vector EfMUP will be described later with reference to FIG. 26 or FIG.
- step S125 the vector operation unit 62 determines the similarity between the program vector PP and the positive history vector UP SimUP—the similarity between the program vector PP and the negative history vector
- SimMUP is calculated, and program vectors PP or EPG data of a predetermined number (for example, three) of higher-order programs are extracted as recommendation information, output to the recommendation information output unit 49, and a recommended program list 50 Is output to the television display device 11 and the recording / reproducing device 12, and the process is terminated.
- the recommendation information is extracted by using the program side effect vector EfPP, the user side effect vector EfUP, or the user side effect vector EfMUP according to the setting, and the user's preference is extracted. Can be recommended.
- the program vector PP, positive history vector UP, and negative history vector MUP are represented by a vector in which all the elements of the detailed items are arranged in one line.
- the program vector PP, the positive history vector UP, and the negative history vector MUP may be calculated for each major item.
- the program effect vector EfPP, the user effect vector EfUP, or the user countereffect vector EUP can be reflected for each major item.
- the matching process 4 will be described.
- step S131 the same processing as in step S121 of FIG. 19 is executed. Then, the usage setting contents of the effect vector are acquired.
- step S 1 32 the vector calculation unit 62 determines the program vector for each of the supplied program vector PP and the main history vector UP read from the main history storage unit 47. Calculate the cosine distance between PP and the positive history vector UP. Here, the effect vector is not used for the calculation.
- step S133 the vector calculation unit 62 multiplies the cosine distance calculated for each item by the effect vector as necessary using the following equation (7), and obtains the obtained value. And calculate the similarity SimUP.
- step S134 the vector calculation unit 62 compares the similarity SimUP between the program vector PP and the normal history vector UP calculated in step S133, and determines the highest similarity. For example, a predetermined number of program vectors PP such as 10, for example, is extracted.
- step S135 the vector calculation unit 62 determines the size of each of the program vector PP extracted by the process in step S134 and the negative history vector MUP read from the negative history storage unit 48. For the item, calculate the cosine distance between the program vector PP and the negative history vector MUP.
- the effect vector is not used in the calculation.
- step S136 the vector computing unit 62 uses the following equation (8) to calculate Multiply the cosine distance calculated for each item by the effect vector as necessary, and sum the obtained values to calculate the similarity SimMUP.
- SimMUP epd-j- * erad + 'cos ⁇ m t + epd CT ' erad g * cos ⁇ nig + epd n * emd p 'cos ⁇ ra p
- Equation (8) describes that both the program side effect vector EfPP and the user side effect vector EfMUP are used, but depending on the settings, the program side effect vector EfPP and the user side effect vector EfMUP are used. If any of the reaction vectors EfMUP are not used, they are calculated by substituting the value “1” for the unused vector.
- step S 1 37 the vector calculation unit 62 sets ⁇ similarity SimUP, which is the cosine distance between the program vector PP and the regular history vector UP ⁇ — ⁇ the program vector PP and the negative history vector
- the similarity SimMUP ⁇ which is the cosine distance from the program, is calculated, and the program vector PP or EPG data of a predetermined number (for example, three) of the higher rank programs is extracted as recommendation information, and the recommendation information output unit 4 9 and registered in the recommended program list 50, and output to the television display device 11 and the recording / reproducing device 12 to complete the processing.
- the weighting is performed using the effect vector for each large item, so that it is possible to generate recommendation information that matches the user's preferences in detail.
- step S141 the same processing as in step S121 of FIG. 19 is executed, and the usage setting contents of the effect vector are acquired.
- step S142 the vector operation unit 62 extracts the genre of the supplied program vector PP.
- the genre of the supplied program vector PP is “drama”.
- step S 1 43 the vector calculation section 62 sets the supplied program vector PP and the main items of the main history beta UP read out from the main history storage section 47 and corresponding to the genre “drama”. For, calculate the cosine distance between the program vector PP and the normal history vector UP. Here, the effect vector is not used in the calculation.
- step S144 the vector operation unit 62 uses the following equation (9) to add the user-side effect vector corresponding to the genre “drama” to the cosine distance calculated for each item, if necessary. , And sum the obtained values to calculate the similarity SimUP.
- Equation (9) describes that both the program side effect vector EfPP and the user side effect vector EfUP are used. However, depending on the setting, the program side effect vector EfPP is used. If any of the user-side effect vectors EfUP is not used, the numerical value “1” is substituted for the unused vector and calculated.
- the vector calculation unit 62 compares the similarity SimUP between the program vector PP and the positive history vector UP calculated in step S143, and determines the highest similarity. For example, a predetermined number of program vectors PP such as 10, for example, are extracted.
- step S146 the vector calculation unit 62 determines whether the program vector PP extracted by the processing in step S145 and the negative history corresponding to the genre "drama" read from the negative history storage unit 48 are stored. For each major item in the vector MUP, the cosine distance between the program vector PP and the negative history vector MUP is calculated. Here, the effect vector is not used in the calculation.
- step S147 the betattle operation unit 62 uses the following equation (10) to add the cosine distance calculated for each item to the genre “drama” as necessary. Multiply the vectors and sum the obtained values to calculate the similarity SimMUP.
- step S148 the vector calculation unit 62 calculates ⁇ similarity SimUP, which is the cosine distance between the program vector PP and the correct history vector UP ⁇ — ⁇ the program vector PP and the negative history vector, Is the cosine distance of SimMUP ⁇ .
- the program vector PP or EPG data of a predetermined number (for example, three) of programs are extracted as recommendation information, output to the recommendation information output section 49, and registered in the recommendation program list 50, and the television The data is output to the display device 11 and the recording / reproducing device 12, and the processing is terminated.
- the cosine distance between the positive history vector UP and negative history vector MUP and the program vector PP for each genre is obtained for each major item, and the effect vector corresponding to the genre is used. Since the similarity is calculated by performing weighting, it is possible to generate recommendation information that matches the user's preference in detail.
- the user side effect vector EfUP and the counter effect vector EfMUP are generated based on the user's initial registration contents registered in the initial registration storage unit 45.
- the positive history vector UP or the negative history vector MUP, or the user-specific effect vector EfUP and countereffect vector E can be calculated by counting the programs watched by the user during a certain period of time. UP may be generated.
- step S151 the user information registration unit 63 of the matching processing unit 43 selects one of the unprocessed large items.
- the user information registration unit 63 refers to the main history stored in the main history storage unit 47, and, for example, during a certain period such as one week, one month, or three months.
- the program vector extraction unit 42 detects the program watched by the user, and causes the program vector extraction unit 42 to extract the program vector PP corresponding to the program watched by the user during a certain period from the data acquisition unit 41. 5 Count the number of programs for each detailed item included in the large item selected in 1.
- step S153 the user information registration unit 63 causes the program vector extraction unit 42 to extract from the data acquisition unit 41 program vectors PP corresponding to all programs in the same period. The number of programs is counted for each detailed item included in the large item selected in S151.
- the user information registration unit 63 calculates the count of the user's viewing performance / the count of all programs based on the count results of steps S152 and S153. .
- the programming is considered to reflect the tastes of the public due to the influence of audience rating competition.
- the calculation of the count number of the user's viewing results and the count number of all programs are, in other words, synonymous with normalizing the count number of the user's viewing results by the force number of all programs as a standard model. is there.
- the normalization vector calculated in step S154 is referred to as a normalization vector D.
- the count of all programs in a week is (8, 12 3, 7, 6, 4, 2, 8, 10) Yes, if the count of programs viewed by the user is (4, 0, 1, 2, 3, 4, 5, 5, 2), the normalized vector D is as follows: .
- step S155 the user information registration unit 63 generates an effect vector of the corresponding large item based on the calculation result of step S155.
- Gm ⁇ Drama, Variety, Sports, Movie, Music, Z Education for Children, Liberal Arts / Documents, News Z News, etc. ⁇
- the standard value may be set to 0.2. Since the effective turtle of the large item is calculated as a relative value, the set value may be any value from 0 to 1.
- the user-side effect vector is a relative value between the normalization vector D calculated in step S154 and the set value.
- step S156 the user information registration unit 63 determines whether the effect vectors of all large items have been generated. If it is determined in step S156 that the effect vectors of all the large items have not been generated,
- step S157 the user information registration unit 63 stores the effect vectors of all the large items. Save and finish the process.
- the user side effect vector EfUP is obtained based on a program watched by the user during a certain period such as one week, one month, or three months.
- the user-side effect vector EfUP corresponding to the short-term, medium-term, and long-term may be calculated, and the recommendation information may be determined using the plurality of effect vectors. good.
- the user-specific preference is used as the user-side effect vector EfUP
- the user-specific preference may be used as the normal history vector UP in the matching process.
- all programs broadcast in a predetermined time zone for example, so-called golden time between 18 o'clock and 22 o'clock
- golden time for example, so-called golden time between 18 o'clock and 22 o'clock
- matching between the user-specific preference and the public preference is performed by calculating the cosine distance indicating the similarity between the normal history vector UP and the public preference.
- the user-side effect vector calculation process 2 for finding the user-side effect vector EfUP for use in the following will be described.
- step S 161 the user information registration unit 63 of the matching processing unit 43 acquires the main history vector UP stored in the main history storage unit 47.
- Step S162 the user information registration unit 63 acquires a standard preference vector APP indicating general preferences.
- the standard preference vector APP may be supplied from the distribution server 5, or the program composition is considered to reflect the public's preference due to the influence of the audience rating competition.
- the contents of all programs broadcast during a certain period are counted, and if necessary, normalized, so that the standard preference vector APP is obtained. May be.
- the distribution server 5 may generate the standard preference vector APP indicating the general preference, for example, using a general audience rating survey or another method.
- the user information registration unit 63 calculates a cosine distance between the standard preference vector APP and the normal history vector UP for each large item. The larger the cosine distance, the higher the similarity between the standard preference vector APP and the normal history vector UP.
- the user information registration unit 63 sets the effect vector EfUP by reversing the cosine distance for each major item based on the cosine distance calculated in step S166. After the generation, the process is terminated. The larger the reciprocal of the cosine distance, the lower the similarity between the standard preference vector APP and the normal history vector UP.
- the user-side effect vector EfUP that reflects the difference between the general preference and the corresponding user-specific preference can be obtained.
- the program recommendation process is performed using the user side effect vector EfUP, the difference between the user's preference and general preference is emphasized, and the recommended program is determined.
- program vector PP and the regular history vector UP are described here as being represented by vectors for each major item, the program vector PP and the regular history vector UP are described. Force Even if all the elements of the detailed items are represented by a vector arranged in one line, it goes without saying that the same processing can be executed.
- the similarity between the standard preference vector APP and the positive history vector UP can be calculated not only by calculating the effect vector, but also as an index indicating the uniqueness of the user, directly in recommending programs. It may be used. For example, when the similarity between the standard preference vector APP and the normal history vector UP is high, a new program that matches the general trend may be preferentially recommended. 59
- the user-side effect vector EfUP is obtained by learning based on the operation history of the user, but the user-side effect vector is determined in advance. It may be registered as the initial registration, or may use a preset value obtained based on experience.
- the user-side effect vector EfUP may be generated not only by generating the user-side effect vector EfUP by focusing on the large item, but also by focusing on the constituent elements constituting the large item.
- the leading role and the supporting role can be distinguished, and in a drama or movie, a user who gives priority to the supporting role over the leading role will
- the user-side effect vector EfUP can be set to increase the weight of the supporting role, and the director, director, original creator, photographer, etc. can be used for the component ⁇ Screenplay / Original Z Direction Am '' that constitutes a major item. Users who place importance on photographers rather than directors and directors may be able to set the user side effect vector EfUP so as to increase the weight of photographers.
- a user-side effect vector EfUP is generated for each genre, and as shown in the matching process 5 described with reference to Fig. 21, matching between the positive history vector UP of the corresponding genre and the program vector PP is performed. You may make it act sometimes.
- a user-side effect vector generation process 3 for generating a user-side effect vector EfUP by counting the programs watched by the user during a certain period for each genre. explain.
- step S171 the user information registration unit 63 of the matching processing unit 43 selects one of the genres in order to count the programs watched by the user during a certain period by genre.
- step S172 the user information registration unit 63 selects one of the unprocessed large items.
- step S 173 the user information registration unit 63 refers to the main history stored in the main history storage unit 47, for example, for one week, one month, or three months.
- the program of the selected genre is detected, and the program vector extraction unit 42 corresponds to the program of the selected genre among the programs watched by the user during the fixed time period.
- the program vector PP to be extracted is extracted from the data acquisition unit 41, and the number of programs is counted for each detailed item included in the large item selected in step S172.
- step S 174 the user information registration unit 63 sends the program vector corresponding to the selected genre out of all the programs in the same period to the program vector extraction unit 42 from the data acquisition unit 41.
- the program number is extracted, and the number of programs is counted for each detailed item included in the large item selected in step S172.
- step S175 the user information registration unit 63 determines, based on the count results in steps S177 and S174, the count of the user's viewing performance in the selected genre. Is calculated.
- the programming is considered to reflect the tastes of the public due to the influence of audience competition. That is, the calculation of the count of the user's viewing performance in the selected genre, in other words, the calculation of the count of all the programs in the selected genre, is performed using the count of the user's viewing performance in the corresponding genre as the corresponding genre as a standard model. This is equivalent to normalizing with the count number of all programs in the program.
- the normalized vector calculated in step S175 is referred to as a normalized vector D '.
- the program vector PP corresponding to the genre “Drama” in the major item genre Gm ⁇ drama, variety, sports, movies, music, children / education, education / documentation, youth / reporting, etc. ⁇
- the count of all programs in a week is (10, 35, 7, 5, 53, 17).
- step S176 the user information registration unit 63 generates an effect vector of the corresponding large item in the selected genre based on the calculation result of step S175.
- the user-side effect vector is a relative value between the normalized vector ET calculated in step S175 and the set value.
- step S177 the user information registration unit 63 determines whether or not the effect vectors of all the large items have been generated in the selected genre. If it is determined in step S177 that the effect vectors of all large items have not been generated, the process returns to step S172, and the subsequent processes are repeated. If it is determined in step S177 that the effect vectors of all large items have been generated, in step S178, the user information registration unit 63 terminates processing of all genres. It is determined whether or not. If it is determined in step S178 that not all genres have been completed, the process returns to step S171, and the subsequent processes are repeated.
- step S 179 the user information registration section 63 sets the effects of all large items on. And the process ends.
- the difference between general preferences and user-specific preferences can be determined for each genre.
- the user-side effect vector EfUP is recalculated every predetermined period, for example, three months or half a year, so that the user's A program that reflects preferences in real time can be recommended.
- the user side effect vector EfUP is obtained based on the program watched by the user during a certain period such as one week, one month, or three months.
- the user-side effect vector EfUP corresponding to, for example, the short-term, medium-term, and long-term is calculated for a plurality of periods, and the plurality of effect vectors are calculated.
- the recommendation information may be determined using the torque.
- a predetermined time period in which the viewer views the program most (for example, the so-called “golden time” from 18 o'clock to 22 o'clock) ) May be counted for all programs broadcasted on the same day.
- the user-specific preferences and the public are calculated by executing a cosine distance calculation indicating the degree of similarity between the normal history vector UP and the public preferences for each genre.
- the following describes the user-side effect vector generation processing 4 for finding the user-side effect vector EfUP for using the distance from the user's preference for matching.
- step S191 the user information registration unit 63 of the matching processing unit 43 selects one of the genres to specify the genre in which the processing is performed.
- step S192 the user information registration unit 63 acquires the correct history vector UP of the selected genre from the correct history vectors UP stored in the correct history storage unit 47.
- step S193 the user information registration unit 63 retrieves the standard preference vector APP of the selected genre from the standard preference vector APP indicating the general preference. Get.
- the standard preference vector APP may be supplied from the distribution server 5 as described above, or the programming may reflect the public preference due to the influence of the audience rating competition. In the same way as the user-side effect vector calculation process 3 described with reference to Fig. 24, the contents of all programs broadcast during a certain period are counted by genre, normalized as necessary, and standardized by genre.
- the preference vector APP may be used.
- a standard preference vector APP indicating general preferences may be generated for each genre using a general audience rating survey or other methods.
- step S 194 the user information registration unit 63 uses the normal history vector UP of the selected genre and the standard preference vector APP of the selected genre to set the standard preference for each major item. Calculate the cosine distance between the vector APP and the normal history vector UP. The larger the cosine distance, the higher the similarity between the standard preference vector APP and the positive history vector UP.
- step S195 the user information registration unit 63 sets the reciprocal of the cosine distance for each major item based on the cosine distance calculated in step S194, to determine the effect of the selected genre. Generates vector EfUP. The greater the reciprocal of the cosine distance, the lower the similarity between the standard preference vector APP and the positive history vector UP.
- step S196 the user information registration unit 63 determines whether or not processing for all genres has been completed. If it is determined in step S178 that all genres have not been completed, the process returns to step S191, and the subsequent processes are repeated. If it is determined in step S196 that all genres have been completed, the processing is terminated.
- step S201 the user information registration unit 63 of the matching processing unit 43 acquires the negative history vector MUP stored in the negative history storage unit 48.
- step S202 the user information registration unit 63 acquires a standard preference vector APP indicating a general preference.
- the standard preference vector APP may be supplied from the distribution server 5.
- the programming can be considered to reflect the tastes of the general public due to the influence of the audience rating competition, so that the user-side effect vector calculation processing 1 described using FIG.
- the contents of all programs broadcasted in a certain period may be counted and normalized as necessary, so that the standard preference vector APP may be set.
- step S203 the user information registration unit 63 calculates a cosine distance between the standard preference vector APP and the negative history vector MUP for each large item.
- step S204 the user information registration unit 63 sets the reciprocal of the cosine distance for each of the large items based on the cosine distance calculated in step S203, and stores the reaction vector EfMUP. Generate it and end the process.
- reaction vector EfMUP can be generated, so that programs that the user does not like can be effectively excluded from recommended programs.
- step S 211 the user information registration unit 63 of the matching processing unit 43 selects one of the genres to specify the genre in which the processing is performed.
- step S212 the user information registration unit 63 acquires the negative history vector MUP of the selected genre among the negative history vectors MUP stored in the negative history storage unit 48. .
- step S213 the user information registration unit 63 acquires the standard preference vector APP of the selected genre from the standard preference vector APP indicating the general preference.
- step S214 the user information registration unit 63 sets the standard preference for each major item based on the negative history vector MUP of the selected genre and the standard preference vector APP of the selected genre. Calculate the cosine distance between the vector APP and the negative history vector MUP. The larger the cosine distance, the higher the similarity between the standard preference vector APP and the negative history vector MUP.
- step S215 the user information registration unit 63 generates a counter-effect vector ⁇ ⁇ ⁇ for each large item by reversing the cosine distance based on the cosine distance calculated in step S214. I do.
- step S216 the user information registration unit 63 determines whether or not processing of all genres has been completed. If it is determined in step S216 that all genres have not been completed, the process returns to step S211 and the subsequent processes are repeated. If it is determined in step S216 that all genres have been completed, the processing is terminated.
- the counter-effect vector EfMUP can be generated for each genre, so that programs that the user does not like can be effectively omitted from recommended programs.
- the user-side effect vector EfUP and the counter-effect vector EfMUP are n times the reciprocal of the cosine distance for each major item described with reference to FIGS. 23 and 25 to 27, or , A value rounded to the specified digit may be used, a value obtained by subtracting the reciprocal of the cosine distance from 1 or a value obtained by multiplying the value by n It may be possible to use the ⁇ direct.
- program vector PP and the negative history vector MUP power are described as vectors for each major item, but the program vector PP and the negative history vector MUP are It goes without saying that the same processing can be executed even when all the elements of the detailed items are represented by a vector arranged in one column.
- the program vector extracted by the program vector extraction unit 42 includes information indicating a group such as a group ID or a cluster code generated by the processing described with reference to FIG. 7 or FIG. May be added.
- the program that the user prefers to watch is a serial drama
- the number of calculation processes for recommendation can be reduced. Also, by preferentially selecting programs in the same group as programs that are highly liked by the user, it is possible to reduce the number of calculation processes for recommendation.
- step S221 the vector calculation unit 62 of the matching processing unit 43 adds a group such as a group ID or a cluster code to the program vector PP supplied from the program vector extraction unit 42. Based on whether or not the indicated information is added, it is determined whether or not the corresponding program is grouped.
- a group such as a group ID or a cluster code
- step S221 when it is determined that the corresponding programs are grouped, in step S222, the vector operation unit 62 determines whether the group indicated by the group ID or the cluster code is It is determined whether or not the user information registration unit 63 is registered as a recommendation priority group.
- step S223 the vector operation unit 62 outputs the information of the corresponding program as recommendation information as recommendation information.
- the recommended information output unit 49 registers a program to be recommended in the recommended program list 50 and displays the television display.
- the information of the recommended program is output to the device 11 or the recording / reproducing device 12, and the process proceeds to step S 227 described later.
- step S221 If it is determined in step S221 that the corresponding program is not grouped, or if it is determined in step S222 that it is not registered as a recommendation priority group, In 24, one of the matching processes 1 to 5 described with reference to FIGS. 17 to 21 is executed.
- step S225 the vector calculation unit 62 adds a group ID, a program ID to a program vector of a program recommended in any one of the matching processes 1 to 3 executed in step S224. Alternatively, based on whether or not information indicating a group such as a cluster code is added, it is determined whether or not the recommended program is grouped. If it is determined in step S225 that the recommended programs are not grouped, the processing is terminated.
- step S226 the vector operation unit 62 determines the group ID added to the program vector, Alternatively, the cluster code is registered and stored in the user information registration unit 63 as a recommendation priority group.
- step S227 the vector calculation unit 62 stores the negative history stored in the negative history storage unit 48.
- step S 226 For example, for a program registered as a recommendation priority group in the above process, for example, an operation input for instructing viewing or recording of other programs while the recommended program is not accepted, or playback of an automatically recorded program Judge whether or not an operation input that has a negative history, such as an operation input to command the previous deletion, has been received. If it is determined in step S227 that an operation input that has a negative history has not been received, the process ends. If it is determined in step S 227 that an operation input having a negative history has been received, in step S 228, the vector calculation unit 62 registers the recommendation priority group of the user information registration unit 63. , The corresponding group is removed, and the process ends.
- a plurality of groups ID may be associated with one program vector PP by the title grouping process 1 described with reference to FIG.
- all group IDs may be removed from the recommendation priority group registration of the user information registration unit 63 by an operation input that results in a negative history.
- the number of operation inputs that result in a negative history is accumulated, and when a predetermined number of operation inputs that result in a negative history are performed, from the registration of the recommendation priority group of the user information registration unit 63, The corresponding group ID may be removed.
- one group ID is associated with one program vector PP.
- Negative history vector MUP may be generated for each corresponding group.
- the number of viewing or recording reservations in the same serial drama is counted based on the correct history of the user's operation history acquired from the television display device 11 or the recording / reproducing device 12, and the predetermined number or more is counted.
- the recommendation may be given priority without performing the matching process.
- a user model is set based on a topic specified by the user in advance, and program recommendation processing is performed based on the user model. You can make it work.
- the user model is obtained by extracting a program corresponding to a topic from a predetermined program group by performing filtering using a topic specified in advance by the user.
- the initial registration storage unit 45 stores the topic input by the user. More than one topic may be registered, and will be updated as appropriate according to the user's operation input.
- the vector calculation unit 62 extracts the program vector including the topic stored in the initial registration storage unit 45 from among the program vectors of the program for which the user model is to be generated, supplied from the program vector extraction unit 42.
- a user model vector is generated by normalizing the extracted sum of the extracted program vectors as necessary, and registered in the user information registration unit 63.
- the user model “Midnight Variety” includes, as a component, a variety of comedians that appeared in the variety show broadcast in the midnight frame after 23 o'clock, so for example, in a drama or other program of a genre different from the variety Since the program in which the corresponding comedian appears will be extracted and recommended in the matching process, it is possible to apply the user's preference beyond the genre, as compared to the case where the matching process is performed for each item. Become.
- the program for which the user model is to be created may be, for example, all programs in a predetermined period, or a group of programs broadcast in a predetermined time period (for example, so-called golden time).
- user model vectors that correspond to different programming in detail for example, at different times or at different time periods, can be created. Can be generated.
- the vector calculation unit 62 resembles the program vector PP of the program supplied from the program vector extraction unit 42 with the user model vector registered in the user information registration unit 63.
- the degree is calculated, and based on the result, recommended information is generated and supplied to the recommended information output unit 49.
- the recommended information output unit 49 registers the recommended information in the recommended program list 50 and supplies the recommended information to the television display device 11 or the recording / reproducing device 12.
- step S231 the vector computing unit 62 of the matching processing unit 43 acquires the program vector of the program for which the user model is to be created, extracted by the program vector extracting unit 42.
- a program for which a user model is to be created is, for example, a program that was broadcast during a predetermined period, such as one month or three months, and is broadcast during a predetermined time period (eg, golden time) during the predetermined period.
- the program may be a broadcasted program, or a program broadcast during a predetermined period in the past, such as 10 years ago, 20 years ago, or the like.
- step S232 the initial registration storage unit 45 acquires the topic input by the user from the operation input unit 44 and stores it.
- the vector operation unit 62 is the first
- the topic is read from the term registration storage unit 45 and set as filtering conditions.
- the filtering condition may be described as, for example, a hash table.
- step S235 the vector operation unit 62 obtains the user model vector generated in step S234 and the recommendation information extracted in the program vector extraction unit 42. Calculate the cosine distance of the program vector (which is scheduled to be broadcast later) to the program vector PP.
- step S 236 the vector computing unit 62, based on the cosine distance calculated in step S 235, calculates the program model of the candidate program for obtaining the user model vector and the recommendation information. Based on the result of the comparison, a predetermined number of programs having the highest similarity are extracted as recommendation information and supplied to the recommendation information output unit 49 based on the comparison result.
- the recommended information output unit 49 registers the recommended information in the recommended program list 50 and supplies the recommended information to the television display device 11 or the recording / reproducing device 12, and the process is terminated.
- the similarity is obtained by calculating the cosine distance between the user model vector and the program vector, but the cosine distance is calculated individually for each major item.
- the similarity may be obtained using the sum.
- the generation process of the user model vector may be executed in the distribution server 5. In this case, for example, the processing of steps S231 to S234 in FIG. 29 is executed using the program vector generated by the program vector generation unit 23 described with reference to FIG. What should I do?
- step S 2 41 the vector operation unit 62 of the matching processing unit 43 receives the program vector PP supplied from the program vector extraction unit 42 and the normal vector stored in the main history storage unit 47. Using the history vector UP and the negative history vector MUP stored in the negative history storage unit 48, the cosine distance between the positive history vector UP and the program vector PP is calculated for each major item. Calculate the cosine distance between the negative history vector MUP and the program vector PP.
- step S2422 the vector operation unit 62 sums the values of the cosine distance calculated for each item on the positive history side and the negative history side. That is, by the processing of step S241 and step S242, the similarity SitnUP between the positive history vector UP and the yarn PP and the negative history vector MUP and the yarn Y are described above. The similarity SimMUP with the solid PP is calculated.
- step S243 the vector calculation unit 62 calculates an exception recommendation value indicating a low similarity with the positive history vector UP and the negative history vector MUP.
- the exception recommendation value can be obtained from (1-SimUP) X (1 -SimMUP) or (1 ZSimUP) X (1 / SimMUP).
- step S224 the vector calculation unit 62 obtains a program with a high exception recommendation value based on the calculation result in step S243, extracts it as recommendation information, and ends the process.
- a program having a feature that the user has never watched can be extracted and recommended, so that unexpectedness is given to the selection of a recommended program to the user, and the interest of the user is expanded. Not only will it be possible to connect to the Internet, but it will also be possible to acquire very important history information in order to recommend programs that match the user's preferences.
- recommendation information is generated in the program recommendation processing device 10 and supplied to the television display device 11 or the recording / reproducing device 12.
- the television display device 11 or the recording / playback device 12 A broadcasting signal of a satellite wave or a terrestrial wave received and decoded by the communication device 4 is supplied.
- the television display device 11 displays a broadcast signal supplied from the television receiving device 4 or reproduction data supplied from the recording / reproducing device 12 based on a user's operation input, or displays a program. Based on the recommendation information supplied from the recommendation processing device 10, it displays recommended program information and executes automatic channel setting. Further, the television display device 11 supplies the operation log to the program recommendation processing device 10.
- the recording / reproducing apparatus 12 records or reserves a broadcast signal supplied from the television receiving apparatus 4 based on a user's operation input, or based on recommendation information supplied from the program recommendation processing apparatus 10. Then, automatically record the program. Further, the recording / reproducing device 12 reproduces a program recorded on the attached recording medium or the built-in recording medium, and outputs the program to the television display device 11 for display. Further, the recording / reproducing device 12 supplies the operation log to the program recommendation processing device 10.
- FIG. 31 is a block diagram illustrating a configuration of the television receiver 4.
- the television receiver 4 will be described as a general receiver conforming to the standard for digital broadcast receivers.
- the satellite wave detector 91 converts a satellite wave transmitted via the satellite 2 and received by the antenna 3 into a signal for selecting a channel supplied from the television display device 11 or the recording / reproducing device 12. Based on this, the channel is detected and detected, and the control 1B relating to the transmission mode is supplied to a TMCC (Transmission and Multiplexing Configuration Control) decoding unit 92 and the broadcast signal is supplied to a demodulation / decoding processing unit 93.
- TMCC Transmission and Multiplexing Configuration Control
- the decoding unit 92 receives input of information such as a transmission mode (modulation method, coding rate, etc.) and a slot in the transmission multiplex control signal, decodes the information, and demodulates and decodes the information. Supply 9 to 3.
- information such as a transmission mode (modulation method, coding rate, etc.) and a slot in the transmission multiplex control signal, decodes the information, and demodulates and decodes the information.
- the demodulation / decoding processing unit 93 converts the supplied broadcast signal based on the information on the transmission mode supplied from the TMCC decoding unit 92 into, for example, a quadri-phase shift keying (QPSK). , Or 4 phase PSK) or 8 phase 15925
- QPSK quadri-phase shift keying
- the signal is demodulated and decoded using a method such as the PSK method, and supplied to the dinter lover 94.
- the din taller 94 dinter leaps the supplied signal and supplies it to the error correction processing unit 95.
- the din taller 94 may further perform frame separation and descrambling processing on the supplied signal.
- the error correction processing unit 95 performs an error correction process using, for example, a Reed-Solomon code, and supplies the result to a CA (Conditional Access: conditional access) descramble unit 101.
- CA Conditional Access: conditional access
- the terrestrial wave detector 96 selects and detects the terrestrial wave received by the antenna 3 based on a control signal for selecting a channel supplied from the television display device 11 or the recording / reproducing device 12. Then, a control signal related to the transmission mode is supplied to the TMCC decoding unit 97, and a broadcast signal is supplied to the demodulation / decoding processing unit 98.
- the TMCC decoding unit 97 receives input of information such as a transmission mode (modulation method, coding rate, etc.), a slot, and a TS in the transmission multiplex control signal, decodes the information, and decodes the information.
- Information such as a transmission mode (modulation method, coding rate, etc.), a slot, and a TS in the transmission multiplex control signal, decodes the information, and decodes the information.
- the demodulation / decoding processing unit 98 converts the supplied broadcast signal into, for example, QAM (quadrature amplitude modulation) based on the information on the transmission mode supplied from the TMCC decoding unit 97.
- the signal is demodulated and decoded by using a method such as a system, and supplied to the Din Taliber 99.
- the ding liver 990 dingles the supplied signal and supplies it to a TS (Transport Stream) reproducing unit 100. Further, the deinterleaver 99 may further perform frame separation or descrambling processing on the supplied signal.
- TS Transport Stream
- the TS reproducing section 100 reproduces a transport stream based on the supplied signal, and supplies the transport stream to the CA descrambling section 101.
- the CA descramble unit 101 receives the conditional access signal based on the signal supplied from the error correction processing unit 95 or the TS reproduction unit 100. Feed to Lexa 102.
- the data input unit 103 receives the input of the EPG data from the EPG receiving device 9, receives the streaming data from the distribution server 5 via the network 8, and supplies the streaming data to the demultiplexer 102.
- the demultiplexer 102 demultiplexes the signal supplied from the CA descramble section 101 or the data input section 103, the audio signal is output to the audio signal decoding section 104, and the video signal is output to the audio signal decoding section 104.
- the video signal decoder 105 supplies the data such as the control signal and the EPG to the data decoder 106.
- the audio signal decoding unit 104 decodes the supplied audio signal and supplies it to the television display device 11 or the recording / reproducing device 12.
- the video signal decoding unit 105 decodes the supplied video signal and supplies it to the television display device 11 or the recording / reproducing device 12.
- the data decoding unit 106 decodes the supplied control signal and data such as EPG and supplies the decoded data to the television display device 11 or the recording / reproducing device 12.
- the received satellite wave or terrestrial wave or the distributed streaming data is demodulated and decoded by a predetermined method, and the television display device 11 or It is supplied to the recording and playback device 12.
- FIG. 32 is a block diagram illustrating a configuration of the television display device 11.
- the operation input unit 1 2 1 receives an operation input from the user, supplies a control signal corresponding to the user's operation input to each unit of the television display device 11, and stores the operation contents of the user in an operation log list 1 2 2 To be stored.
- the operation log of the user stored in the operation log list 122 is acquired by the operation log acquisition unit 46 of the program recommendation processing device 10 described with reference to FIG.
- the operation input unit 121 supplies the input user operation to the channel setting unit 123.
- the channel setting unit 123 generates a control signal indicating channel selection based on the signal indicating the user's operation input supplied from the operation input unit 122 and supplies the control signal to the television receiver 4.
- a control signal indicating channel selection is generated and supplied to the television receiver 4 in order to automatically set a channel.
- the television receiver 4 receives a broadcast signal of a specified channel based on the control signal.
- the data input section 124 receives an input of a broadcast signal from the television receiver 4 and supplies the broadcast signal to the image processing section 125.
- the image processing unit 125 performs image processing on the supplied broadcast signal based on the image display method of the output unit 126 and supplies the broadcast signal to the output unit 126.
- the output unit 126 includes, for example, a display device such as a CRT (Cathode Ray Tube) or an LCD (Liquid Crystal Display), and an audio output device such as a speaker, and a supplied broadcast signal after image processing.
- the image signal is displayed on the display device, and the audio signal is output from the audio output device.
- the recommended program list acquisition section 127 acquires recommendation information from the program recommendation processing device 10 and supplies it to the recommended program list 128.
- the recommended program list 1 288 registers the supplied recommended information.
- the recommended information registered in the recommended program list 128 is read out to the channel setting unit 123 or to the recommended program information display control unit 129.
- the recommended program information display control unit 129 outputs the recommended information read from the recommended program list 128 to the image processing unit 125 in order to present the recommended information of the program to the user.
- the image processing unit 125 outputs the recommendation information supplied from the recommended program information display control unit 129 alone or by superimposing it on the image of the broadcast signal supplied from the data input unit 124. Output it to the unit 1 26 and display it on the display device.
- Whether the recommended information is displayed on the output unit 126 or the channel is automatically set based on the recommended information supplied from the program recommendation processing device 10 depends on the setting of the user. It may be determined.
- the recommendation information output unit 49 obtains the recommendation information output from the recommendation information output unit 49.
- step S252 the recommended program list acquisition section 127 registers the acquired recommended information in the recommended program list 128.
- step S 253 the recommended program information display control unit 1 229 selects a program to be broadcast from the recommended program list 1 288 within a predetermined time from the current time, for example, 3 hours or 1 day.
- the recommended information is read, and the recommended information display data for displaying the title, content, broadcast time, and broadcast channel of the recommended program is generated and supplied to the image processing unit 125.
- step S254 the image processing unit 125 executes image processing for displaying the supplied recommendation information display data on the output unit 126, and supplies the data to the output unit 126.
- the recommendation information is subjected to image processing alone or by being superimposed on the image of the broadcast signal supplied from the data input unit 124.
- step S255 the output unit 126 displays the recommendation information supplied from the image processing unit 125, and the process ends.
- the recommendation information is displayed on the output unit 126, so that the user can select a program to view by referring to the displayed recommendation information.
- a channel for automatically setting a channel based on the recommendation information supplied from the program recommendation processing device 10 and displaying a program matching the user's preference is displayed. The automatic channel setting process will be described.
- step S271 and step S272 the same processing as in step S251 and step S252 described with reference to FIG. 33 is executed. That is, the recommendation information output from the recommendation information output unit 49 of the program recommendation processing device 10 is acquired, and the acquired recommendation information is registered in the recommended program list 128.
- the channel setting unit 1 2 3 acquires information of the recommended program corresponding to the current time from the program recommendation list 98 in step S 2 73, and in step S 2 74, based on the information of the recommended program, It generates channel setting information and outputs it to the television receiver 4.
- the television receiver 4 receives the designated channel based on the control signal. Receiving broadcast signals of the channel.
- step S275 the data input unit 124 acquires the broadcast signal of the specified channel from the television receiver 4 and supplies the broadcast signal to the image processing unit 125.
- the image processing unit 125 performs image processing for displaying the supplied broadcast signal on the output unit 126, and supplies the broadcast signal to the output unit 126.
- the output unit 126 displays the video of the recommended program supplied from the image processing unit 125, outputs the sound, and ends the processing.
- a channel is automatically set to a channel on which a program matching the user's preference is being broadcast.
- the automatic channel setting process described with reference to FIG. 34 may be executed, for example, when the user issues a command.
- the automatic channel setting process described with reference to FIG. 34 is performed, for example, every two hours, such as at a predetermined time when it is determined that the user has just left the channel without setting the channel with particular consideration.
- the process may be executed when an operation input from the user is absent for a predetermined time when it can be determined that the user has been left unattended.
- a mode in which the automatic channel setting process cannot be executed is prepared. You may be able to do it.
- FIG. 35 is a block diagram showing a configuration of the recording / reproducing device 12.
- the operation input unit 14 1 receives an operation input from the user, supplies a control signal corresponding to the user's operation input to each unit of the recording / reproducing device 12, and stores the user's operation contents in the operation log list 14 2. Supply and save.
- the operation log of the user stored in the operation port list 14 2 is acquired by the operation port acquisition unit 46 of the program recommendation processing device 10 described with reference to FIG.
- the recording setting section 144 is based on a signal indicating the user's operation input supplied from the operation input section 141 or based on a signal registered in a recommended program list 144 described later. From the recommendation information, information necessary for performing the recording process, such as the broadcast start time and the broadcast end time of the program to be recorded, and the channel to be broadcast, is extracted.
- the recording setting unit 144 registers information necessary for performing recording processing in the recording reservation list 144
- the user's operation input supplied from the input unit 141 is a recording process of a currently broadcasted program, or automatically using the recommended information registered in a recommended program list 149 described later.
- information necessary for performing the recording process is supplied to the recording control unit 145.
- the recording control section 144 is based on the information necessary for performing the recording process supplied from the recording setting section 144 or based on the recording reservation information registered in the recording reservation list 144. By extracting the recording reservation information corresponding to the current time, a control signal indicating the broadcast channel of the program to be recorded is generated, supplied to the television receiver 4, and a control signal for executing the recording process. Is generated and supplied to the recording / playback processing section 147.
- the television receiver 4 receives a broadcast signal of a specified channel based on the control signal.
- the data input unit 146 receives an input of a broadcast signal from the television receiver 4 and supplies the broadcast signal to the recording / playback processing unit 147.
- the recording / reproducing processing unit 147 is configured so that a recording medium such as a magnetic tape, an optical disk, a magnetic disk, a magneto-optical disk, or a semiconductor memory can be mounted therein, or has a hard disk, for example. Or a recording medium such as a semiconductor memory so that information can be recorded on the recording medium or the information can be reproduced from the recording medium.
- the recording / playback processing unit 147 when the recording medium attachable to the recording / playback processing unit 147 is a magnetic tape, the recording / playback processing unit 147 has a magnetic head, and the data input unit 1 46 Records (ie, records) the broadcast signal supplied from 6 or reproduces the information recorded on the magnetic tape and supplies it to the television display device 11 or the like for reproduction and output.
- the recommended program list acquisition unit 14 8 acquires recommendation information from the program recommendation processing device 10 And supply it to the recommended program list 149.
- the recommended program list 149 registers the supplied recommended information.
- the recommendation information registered in the recommended program list 149 is read out to the recording setting unit 143, and the recording process is automatically executed.
- step S291 the recommended program list acquisition unit 148 acquires the recommendation information output from the recommendation information output unit 49 of the program recommendation processing device 10.
- step S292 the recommended program list obtaining unit 148 registers the obtained recommended information in the recommended program list 149.
- step S293 the recording setting unit 144 extracts the information of the recommended program corresponding to the current time, the program recommendation list 109, the broadcast start time and the broadcast end time, and the broadcast channel. Such information as necessary for the recording process is obtained and supplied to the recording control unit 144.
- step S294 the recording control unit 145 generates channel setting information for receiving the broadcast signal of the program to be recorded, and outputs the information to the television receiver 4.
- the television receiver 4 receives the broadcast signal of the specified channel based on the control signal.
- step S295 the data input unit 146 acquires the broadcast signal of the specified channel from the television receiver 4, and supplies it to the recording / playback processing unit 147.
- step S296 the recording / playback processing section 147 records the supplied broadcast signal on a mounted or built-in recording medium, and the process ends.
- the automatic recording process described with reference to FIG. 36 is not executed while a recording operation is already being performed, such as during a recording process instructed by a user or during a recording operation by a recording reservation process.
- This section describes the case where recording is performed automatically based on the recommended program corresponding to the current time. However, it goes without saying that, for example, it is also possible to obtain recommendation information for a predetermined time earlier than the current time and automatically set a recording reservation by performing the same processing. .
- the program vector PP is described as being generated in the distribution server 5, but the distribution server does not generate the program vector PP, but via the network 8. Then, the EPG data may be supplied to the program recommendation processing device, and the program recommendation processing device may generate the program vector PP.
- the distribution server 17 supplies the EPG data to the program recommendation processing device via the network 8 and generates the program vector PP in the program recommendation processing device.
- the configuration of 1 is shown in Fig. 37, and the configuration of the program recommendation processing device 191 is shown in Fig. 38.
- the distribution server 17 1 is composed of the data acquisition unit 21 and the data transmission unit 25 of the distribution server 5 described with reference to FIG. 2, and outputs the streaming data from the streaming data database 6 or the metadata database 7.
- EPG data composed of metadata is acquired and transmitted to the EPG receiving device 8 or the television receiving device 4 via the network 8.
- a metadata acquisition unit 22 and a program vector generation unit 23 similar to those provided in the distribution server 5 of FIG. 2 are newly provided. Other than the above, it has the same configuration as that of the program recommendation processing device 10 described with reference to FIG. 13.
- the program vector processing described with reference to FIG. And the program vector generation processing 2 described with reference to FIG. 6, the grouping processing 1 described with reference to FIG. 7, and the grouping processing described with reference to FIG. 8 are executed. I do.
- the EPG receiving device 9 collects the user's operation history and setting information from the television display device 11 and the recording / reproducing device 12 and supplies them to the distribution server via the network 8.
- the distribution server may not only generate the program vector PP but also execute the matching process and supply the matching result to the EPG receiving device 9 via the network 8.
- the network configuration in the case shown in FIG. 3 9 shows a block diagram illustrating a delivery server 2 0 1 configuration in FIG. 4 0.
- the distribution server 201 is obtained by adding the function of the program recommendation processing device 191 described with reference to FIG. 38 to the distribution server 171 described with reference to FIG. 37. Users do not need to own a program recommendation processor.
- program vector PP In the configuration shown in Fig. 39 and Fig. 40, program vector PP, program side effect vector EfPP, positive history vector UP, negative history vector MUP, or standard preference betatle APP, etc. 3 to 12 and FIGS. 14 to 30, such as the generation processing of the program vector, the processing of grouping the program vectors, the matching processing, and the processing of selecting the exceptional recommended programs. All processing is executed by the distribution server 201.
- the operation history and setting information of the user collected from the EPG receiving device 9 and the television display device 11 and the recording / reproducing device 12 and transmitted via the network 8 include, for example, , User ID, etc., so that each user can be distinguished.
- the program recommendation processing device 1911 of the distribution server 201 the initial registration storage unit 45, the positive history storage unit 47, the negative history storage unit 48, etc., are based on the user ID of the supplied information. Then, each information is saved for each user.
- a case has been described in which a program suited to the user's preference is recommended using EPG data of a television broadcast signal.
- the present invention provides various types of broadcasting such as radio broadcasting and streaming data.
- the present invention can also be applied to a case where attribute information is added to digital content and recommendation is made for a user's preference.
- the series of processes described above can also be executed by software.
- the software is capable of executing various functions by installing a computer in which the program constituting the software is built into dedicated hardware or installing various programs. Installed from a recording medium to a personal computer.
- this recording medium is a magnetic disk 31 or a magnetic disk 31 on which the program is recorded, which is distributed to provide the program to the user separately from the computer.
- 7 1 including flexible disk
- optical disk 32 or 7 2 including CD-ROM (Compact Disk-Read Only Memory), DVD (Digital Versatile Disk)), magneto-optical disk 33 or 73 (MD (Mini-Disk) (trademark)), or a package medium composed of semiconductor memory 34 or 74 or the like.
- steps for describing a program recorded on a recording medium are not limited to processing performed in chronological order in the order described, but are not necessarily performed in chronological order. Alternatively, it also includes processing that is executed individually.
- system refers to an entire device including a plurality of devices.
- weighting information that defines the degree of contribution of each eye can be associated with content attribute information.
- the present invention it is possible to select a content that matches the user's preference, and also to calculate the similarity between the attribute information and the predetermined user's preference information by the contribution of each of the plurality of items. Since the content is selected using the weighting information that defines the degree, it is possible to select the content that correctly matches the user's preference.
- the user's preference it is possible to obtain the user's preference.
- the user's preference by comparing the user's preference with the general preference and determining the bias of the user's preference, it is possible to determine the user's specific preference.
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Theoretical Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Social Psychology (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Library & Information Science (AREA)
- Artificial Intelligence (AREA)
- Computational Linguistics (AREA)
- Data Mining & Analysis (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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KR1020107017180A KR101084503B1 (ko) | 2002-12-12 | 2003-12-12 | 정보 처리 장치 및 정보 처리 방법, 및 기록 매체 |
US10/538,944 US8359322B2 (en) | 2002-12-12 | 2003-12-12 | Information-processing apparatus, method, system, and computer readable medium and method for automatically recording or recommending content |
EP03778858A EP1571835A4 (en) | 2002-12-12 | 2003-12-12 | DEVICE, METHOD AND SYSTEM FOR PROCESSING DATA, RECORDING MEDIUM, AND PROGRAM |
US13/715,347 US20130179456A1 (en) | 2002-12-12 | 2012-12-14 | Information-processing apparatus, method, system, computer- readable medium and method for automatically recording or recommending content |
US14/617,531 US9552413B2 (en) | 2002-12-12 | 2015-02-09 | Information-processing apparatus, method, system, computer-readable medium and method for automatically recording or recommending content |
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JP2002361276A JP4161701B2 (ja) | 2002-12-12 | 2002-12-12 | 情報処理装置および情報処理方法、記録媒体、並びにプログラム |
JP2002-361276 | 2002-12-12 | ||
JP2002361275A JP4003127B2 (ja) | 2002-12-12 | 2002-12-12 | 情報処理装置および情報処理方法、情報処理システム、記録媒体、並びにプログラム |
JP2002-361275 | 2002-12-12 |
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US10/538,944 A-371-Of-International US8359322B2 (en) | 2002-12-12 | 2003-12-12 | Information-processing apparatus, method, system, and computer readable medium and method for automatically recording or recommending content |
US13/715,347 Continuation US20130179456A1 (en) | 2002-12-12 | 2012-12-14 | Information-processing apparatus, method, system, computer- readable medium and method for automatically recording or recommending content |
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WO2004054245A1 true WO2004054245A1 (ja) | 2004-06-24 |
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US (3) | US8359322B2 (ja) |
EP (1) | EP1571835A4 (ja) |
KR (2) | KR101019976B1 (ja) |
WO (1) | WO2004054245A1 (ja) |
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Also Published As
Publication number | Publication date |
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US9552413B2 (en) | 2017-01-24 |
US20130179456A1 (en) | 2013-07-11 |
EP1571835A1 (en) | 2005-09-07 |
US8359322B2 (en) | 2013-01-22 |
EP1571835A4 (en) | 2010-10-20 |
US20150178379A1 (en) | 2015-06-25 |
US20060248091A1 (en) | 2006-11-02 |
KR20100100998A (ko) | 2010-09-15 |
KR101019976B1 (ko) | 2011-03-09 |
KR101084503B1 (ko) | 2011-11-18 |
KR20050084264A (ko) | 2005-08-26 |
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