JP5314500B2 - Program information providing system, program information providing server device, and program information providing method - Google Patents

Description

  The present invention relates to a program information providing system, a program information providing server device, and a program information providing method, and in particular, provides program information of a genre that a viewer likes with a variety that varies from viewer to viewer among a large number of television programs. The present invention relates to a program information providing system, a program information providing server device, and a program information providing method.

  With the advent of the digital broadcasting era, it has become possible to easily view many channels even at home. In addition to the conventional channels, these channels include specialized channels of genres such as movies, news, and dramas, and if the specialized channels are also dramas, such as domestic dramas, Korean dramas, and historical dramas There are specialized channels of various genres.

On the other hand, the content of broadcast programs has also appeared in programs that tend to have multiple genres, such as a variety program that combines talk and quiz programs, and a program that combines news and talk. The number of things that cannot be classified by genre such as sports is increasing.
Against this background, the genres that viewers prefer are also diversifying, and methods for providing program information that viewers prefer from a plurality of programs have been proposed.

For example, the automatic program selection device described in Patent Document 1 first stores a viewing history of a program viewed by a user. Then, the program automatic selection device uses only the viewing history of the program that the user has watched with interest based on the user's program selection operation status, etc., for preference analysis, and from among the programs with program information, Automatically select the program that suits your taste.
Further, the user preference extraction device and the television program recommendation device described in Patent Document 2 classify programs viewed by the user into programs that are viewed daily or weekly and other programs. The user preference extracting device and the TV program recommending device can view the information of programs that are viewed even though they are not viewed periodically, and mere habits such as news and wide shows among the programs that are periodically viewed. The user's preference is extracted using information on programs that are meaningful in the program contents other than the strongly probable programs, and programs that match the extracted user preferences are recommended.

JP 2006-173715 A JP 2006-31482 A

However, in the invention described in the above-mentioned patent document, only the viewing history of a program that has been viewed with interest is subjected to preference analysis. Therefore, all the selected programs are biased to programs of the same genre. There was a thing.
Therefore, in view of the above problems, the present invention provides a wide range of program information suitable for a user's favorite genre, with a variety that varies from user to user, from among a variety of program genres, without being biased toward a specific genre. An object of the present invention is to provide a program information providing system, a program information providing server device, and a program information providing method.

In order to achieve the above object, a program information providing system, a program information providing server device, and a program information providing method according to the present invention are configured as follows.
A program information providing system according to the present invention includes a program information providing server device, and a user terminal device connected to the program information providing server device via a communication network,
The program information providing server device includes:
Viewing history information acquisition means for acquiring viewing history information of a program viewed by a user transmitted from the user terminal device;
Viewing history program information cluster placement means for placing a cluster corresponding to the viewing history information acquired by the viewing history information acquisition means in the Euclidean space according to the genre of the program included in the viewing history information;
A hypersphere generating means for generating a supersphere including all the clusters arranged in the Euclidean space inside;
Broadcast program information acquisition means for acquiring broadcast program information;
Broadcast program information cluster arrangement means for arranging a cluster corresponding to the broadcast program information acquired by the broadcast program information acquisition means in the Euclidean space according to the genre of the program included in the broadcast program information;
Of the clusters corresponding to the broadcast program information arranged by the broadcast program information cluster arrangement means, the broadcast program information corresponding to the clusters included inside the hypersphere generated by the supersphere generation means is recommended program information. Program information selection means to select as,
Broadcast program information transmitting means for transmitting the recommended program information selected by the program information selecting means to the user terminal device;
With
The user terminal device is
Viewing history information acquisition means for acquiring the viewing history information;
The viewing history information transmitting means for transmitting the viewing history information acquired by the viewing history information acquiring means to the program information providing server device;
Recommended program information acquisition means for acquiring the recommended program information transmitted from the program information providing server device;
Recommended program information output means for outputting the recommended program information acquired by the recommended program information acquisition means;
It is characterized by providing.

  According to the above program information providing system, the program information providing server device uses an existing program information recommendation technique in combination with a system using an existing program information recommendation technique that recommends recommended program information to a user, for example. By acquiring broadcast program guide information provided from the system and selecting recommended program information from the broadcast program guide information, users are not biased toward a specific genre, and users can choose from a variety of program genres. It is possible to provide a wide range of program information suitable for the genre. Further, in the user terminal device, it is possible to acquire recommended program information suitable for the genre that is preferred with different diversity for each user, simply by providing viewing history information to the program information providing server device.

A first program information providing server device according to the present invention is a program information providing server device that constitutes a program information providing system together with a user terminal device,
Viewing history information acquisition means for acquiring viewing history information regarding a program viewed by a user transmitted from the user terminal device;
Viewing history program information cluster placement means for placing a cluster corresponding to the viewing history information acquired by the viewing history information acquisition means in the Euclidean space according to the genre of the program included in the viewing history information;
A hypersphere generating means for generating a supersphere including all the clusters arranged in the Euclidean space inside;
Broadcast program information acquisition means for acquiring broadcast program information;
Broadcast program information cluster arrangement means for arranging a cluster corresponding to the broadcast program information acquired by the broadcast program information acquisition means in the Euclidean space according to the genre of the program included in the broadcast program information;
Of the clusters corresponding to the broadcast program information arranged by the broadcast program information cluster arrangement means, the broadcast program information corresponding to the clusters included inside the hypersphere generated by the supersphere generation means is recommended program information. Program information selection means to select as,
Broadcast program information transmitting means for transmitting the recommended program information selected by the program information selecting means to the user terminal device;
It is characterized by providing.
According to the above program information providing server device, the same operation as the program information providing server device of the above program information providing system can be obtained.

In the second program information providing server device according to the present invention, the program information selecting means includes:
Broadcast program information is selected as recommended program information from clusters corresponding to the broadcast program information of an arbitrary period and an arbitrary broadcast type.
According to the above-mentioned program information providing server device, program information suitable for the genre that the user prefers can be easily provided with different diversity for each user from any period and any broadcast type selected by the user. It becomes possible to do.
In the third program information providing server device according to the present invention, the viewing history program information cluster arrangement unit and the broadcast program information cluster arrangement unit include:
A cluster is arranged based on a tendency degree of a genre of the program information calculated based on a morphological analysis result of text data included in the program information and an index value of TF-IDF.

According to the above-described program information providing server device, it is possible to provide program information suitable for the genre that the user likes with high accuracy.
A program information providing method according to the present invention is a program information providing method executed by a program information providing server device connected to a user terminal device via a communication network,
A viewing history information acquisition step in which the viewing history information acquisition means acquires viewing history information of a program viewed by the user transmitted from the user terminal device (for example, corresponding to S101 in FIG. 13);
Viewing history program information in which the viewing history program information cluster arranging means arranges the cluster corresponding to the viewing history information acquired in the viewing history information acquisition step in the Euclidean space according to the genre of the program included in the viewing history information. A cluster placement step (for example, corresponding to S104 in FIG. 13);
A hypersphere generation step (for example, corresponding to S105 in FIG. 13) in which a hypersphere generation means generates a hypersphere including all clusters arranged in the Euclidean space inside;
A broadcast program information acquisition step in which the broadcast program information acquisition means acquires the broadcast program information (for example, corresponding to S106 in FIG. 13);
Broadcast program information cluster arrangement means for arranging a cluster corresponding to the broadcast program information acquired by the broadcast program information acquisition step in the Euclidean space according to the genre of the program included in the broadcast program information. An arrangement step (for example, corresponding to S107 in FIG. 13);
Of the clusters corresponding to the broadcast program information arranged by the broadcast program information cluster arrangement step by the program information selection means, the broadcast program corresponding to the cluster included inside the hypersphere generated by the supersphere generation step A program information selection step (for example, corresponding to S108 in FIG. 13) for selecting information as recommended program information;
The broadcast program information transmitting means includes a broadcast program information transmitting step (for example, corresponding to S109 in FIG. 13) for transmitting the recommended program information selected in the program information selecting step to the user terminal device. To do.
If the above program information providing method is employed, the same operation as that of the first program information providing server device can be obtained.

  According to the present invention, among the clusters corresponding to the broadcast program information arranged by the broadcast program information cluster arrangement unit, the broadcast program information corresponding to the cluster included inside the hypersphere generated by the supersphere generation unit is recommended. Select as program information. For this reason, it is possible to provide a wide variety of program information suitable for a genre that the user likes with a variety that varies from user to user from among a variety of program genres without being biased toward a specific genre.

It is a network diagram which shows the structure of the program information provision system which concerns on this invention. It is a block which shows the function structure of a program information provision server apparatus. It is a block which shows the function structure of a user terminal device. It is a schematic diagram which shows the Euclidean space showing the tendency degree of the genre of the program which the user watched in the storage process of viewing history information. It is a schematic diagram which shows the Euclidean space showing the tendency degree of the genre of the program which the user watched in the selection process of recommended program information. It is a schematic diagram which shows the Euclidean space showing the tendency degree of the genre of the program which the user watched in the selection process of recommended program information. It is a schematic diagram which shows the Euclidean space showing the tendency degree of the genre of the program which the user watched in the selection process of recommended program information. It is a schematic diagram which shows the Euclidean space showing the tendency degree of the genre of the program which the user watched in the selection process of recommended program information. It is a schematic diagram which shows the Euclidean space showing the tendency degree of the genre (parity) of the program which the user watched in the selection process of recommended program information. It is a schematic diagram which shows the Euclidean space showing the tendency degree of the genre (drama and sports) of the program which the user watched in the selection process of recommended program information. It is a schematic diagram which shows the Euclidean space showing the tendency degree of the genre of the program which the user watched in the selection process of recommended program information. It is a display screen image of program information selected based on selection processing of recommended program information. It is a flowchart which shows the flow of the recommendation program selection process of a program information provision server apparatus. It is a flowchart which shows the flow of the storage / acquisition process of viewing history information in a user terminal device.

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. In each drawing referred to in the following description, components equivalent to those in the other drawings are denoted by the same reference numerals.
(Configuration of program information provision system)
First, the configuration of the program information providing system according to the present invention will be described with reference to FIG. FIG. 1 is a network diagram showing a configuration of a program information providing system according to the present invention.

A program information providing system 10 shown in FIG. 1 includes a program information providing server device 11 and a plurality of user terminal devices 12-1 to 12-n (n is an integer of 2 or more, the same applies hereinafter). The program information providing server device 11 and the plurality of user terminal devices 12-1 to 12-n are connected through a network 13 such as the Internet or a telephone line.
The program information providing server device 11 is configured so that the user can select a program for each of the plurality of user terminal devices 12-1 to 12-n based on the history of programs viewed by the user acquired from the plurality of user terminal devices 12-1 to 12-n. Provide program information of the genre that you like.
The user terminal device 12 acquires the television viewing history by transmitting to the program information providing server device 11 and receiving program information of a genre preferred by the user provided from the program information providing server device 11.

  The user terminal device 12 may be incorporated in, for example, a liquid crystal television, a mobile phone incorporating a tuner for digital television broadcasting, a set-top box of a cable television, or the like. If the user terminal device 12 is built in the liquid crystal television, the network 13 is a telephone line or the Internet. If the user terminal device 12 is built in the mobile phone, the network 13 is a mobile phone network internet connection service, If the user terminal device 12 is a cable TV set-top box, the network 13 is a cable TV line, a telephone line, or the like capable of bidirectional communication.

(Functional configuration of the program information providing server device)
Next, the functional configuration of the program information providing server device 11 will be described with reference to FIG. FIG. 2 is a block diagram showing a functional configuration of the program information providing server device 11.
2 includes a recommended program guide information acquisition request receiving unit 11a, a viewing history information receiving unit 11b, a viewing history information storing unit 11c, a program guide information acquiring unit 11d, a program guide information storing unit 11e, A recommended program information selection unit 11f and a recommended program information transmission unit 11g are provided.

The recommended program guide information acquisition request receiving unit 11 a receives a request signal for providing recommended program guide information from the user terminal device 12.
The viewing history information receiving unit 11b receives viewing history information such as a program name, program information, viewing date, viewing start time, viewing end time, etc. attached to the program viewed by the user transmitted from the user terminal device 12.
The viewing history information storage unit 11c stores the viewing history information received by the viewing history information receiving unit 11b.

  The program guide information acquisition unit 11d is, for example, a recommended program provided by the system from a system that uses existing program information recommendation technology that provides recommended program information according to a genre designated by the user as described in Background Art. Broadcast program guide information relating to a broadcast program including a program name such as information, program information, broadcast start time, broadcast end time, and the like is acquired. The program information providing system according to the present invention is configured to be used in combination with a system using an existing program information recommendation technique, and a system using an existing program information recommendation technique by the program guide information acquisition unit 11d. By obtaining broadcast program guide information to be provided, and selecting recommended program information from the broadcast program guide information by a method described later, the recommended program that suits the genre that the user likes with different diversity for each user Information can be provided.

The program guide information storage unit 11e stores the program guide information acquired by the program guide information acquisition unit 11d.
The recommended program information selection unit 11f selects program information to be provided to the user from the program guide information stored in the program guide information storage unit 11e.
The recommended program information transmission unit 11g transmits the recommended program information selected by the recommended program information selection unit 11f to the user terminal device 12.
Next, the functional configuration of the user terminal device 12 will be described with reference to FIG. FIG. 3 is a block diagram showing a functional configuration of the user terminal device 12.

(Configuration of user terminal device)
3 includes a viewing program information acquisition unit 12a, a stored recording program information acquisition unit 12b, a recording reservation information acquisition unit 12c, a viewing history transmission unit 12d, a recommended program guide information acquisition request transmission unit 12e, and a recommended program. A table information receiving unit 12f and a recommended program table information storage unit 12g are provided.
The viewing program information acquisition unit 12a acquires the viewing history information such as the program name, program information, viewing date, viewing start time, viewing end time, etc. attached to the program viewed by the user.
The stored recorded program information acquisition unit 12b acquires by receiving viewing history information such as program name, program information, viewing date, viewing start time, viewing end time attached to a recorded or downloaded program.

The recording reservation information acquisition unit 12c acquires the program name, program information, recording date, recording start time, recording end time, and the like attached to the program reserved for recording.
The viewing history transmission unit 12d transmits each piece of information acquired by the viewing program information acquisition unit 12a, the stored recording program information acquisition unit 12b, and the recording reservation information acquisition unit 12c to the program information providing server device 11 as viewing history information. To do.
The recommended program guide information acquisition request transmitting unit 12 e transmits a request signal for acquiring the program guide information to the program information providing server device 11.

The recommended program guide information receiving unit 12 f receives recommended program information from the program information providing server device 11.
The recommended program guide information storage unit 12g temporarily stores program guide information in order to output the recommended program guide information received by the recommended program guide information receiving unit 12f. The update interval of the program guide information stored in the recommended program guide information storage unit 12g can be arbitrarily set by the user, and can be automatically updated every set update interval.

(Flow of viewing history information storage process in viewing history information storage unit)
Next, with reference to FIG. 4, a flow of the viewing history information storing process in the viewing history information storage unit 11c will be described. FIG. 4 is a schematic diagram showing the Euclidean space 20 representing the tendency degree of the genre of the program viewed by the user in the storage process of the viewing history information.
A Euclidean space 20 shown in FIG. 4 represents the tendency degree of the genre of the program viewed by the user. In the present embodiment, the Euclidean space 20 represents the degree of tendency of three genres of “variety”, “drama”, and “sports”. The x-axis indicates the degree of tendency of “variety” in the program genre. The y-axis indicates the degree of tendency of “drama” in the program genre. The z-axis indicates the degree of tendency of “sports” in the program genre. The larger the value of the square axis, the stronger the tendency of the genre.

  The degree of tendency is represented by the frequency at which keywords (words) related to each genre appear in the text data included in the program information. For example, if the genre is “Variety”, for example, “Variety”, “Laughter”, “Comed”, “Surprised”, “Funny”, “Smile”, etc. Text data has a higher variety tendency. Also, if the genre is “sports”, keywords such as “sports”, “baseball”, “sumo”, “tournament”, “compete”, “dome stadium” and “gymnasium” appear frequently. The text data of the program information to be played has a higher sporting tendency. Thus, the name of sports, the names of athletes and entertainers, other nouns and proper nouns associated with each genre are keywords for specifying the genre.

The index value indicating the degree of tendency is included in the text data by TF-IDF (Term Frequency-Inverse Document Frequency) after the text data included in the program information is divided into parts of speech (words) by morphological analysis as described above. The weight w for each keyword is calculated.
First, the tendency degree that the genre is variety is calculated. In the text data, the number of keywords ti (i ≧ 0) related to variety in genre is tf1i, the number of all program information is N, and the number of program information containing keywords related to variety is df1i. And At this time, the weight w1i of each word ti whose genre is variety can be expressed as Equation (1).
w1i = tf1i · log (N / df1i) (1)

Similarly, the weight w2j of each word tj when the genre is a drama related to a drama and the genre is drama, for example, is the weight w2j of the equation (2), and the genre is a sports related keyword such as “sport”. The weight of each word tk in the case of sports can be expressed as in equation (3) (j ≧ 0, k ≧ 0).
w2j = tf2j · log (N / df2j) (2)
w3k = tf3k · log (N / df3k) (3)

The weights for each word calculated by the TF-IDF are different from each other. For example, the keywords for variety include a weight of 0.1 for “laughter”, a weight of 0.03 for “surprise”, and “laugh”. When the weight of is 0.05, the tendency degree Σ_iw1i whose genre is variety is
Σ_iw1i = 0.1 + 0.03 + 0.05 = 0.18
It becomes. Similarly, a tendency degree Σ_jw2j whose genre is drama and a tendency degree Σ_kw3k whose genre is sports are calculated.

Then, assuming that the tendency degree Σ_iw1i, which is variety, is the x-axis value, the tendency degree Σ_jw2j, which is drama, is the y-axis value, and the tendency degree Σ_kw3k, which is sports, is the z-axis value, the coordinate values (Σ_iw1i, Σ_jw2j , Σ_kw3k), the program viewed by the user can be represented as a cluster.
Although it is an example, the cluster 21 exists on the x-axis which shows almost variety. For this reason, the cluster 21 indicates that the program information has a variety tendency in the classification by the genre described above.

Moreover, the cluster 22 exists on the x-axis which shows almost the same variety as the cluster 21. However, the cluster 22 exists at a position where the value on the x-axis is larger than that of the cluster 21. For this reason, the cluster 22 represents that the program information has a stronger variety tendency than the cluster 21.
In addition, the cluster 23 exists almost between the x-axis indicating variety and the z-axis indicating sport. For this reason, the cluster 23 indicates that the program information has a tendency of having both a variety and a sport tendency.
Thus, the tendency degree of each genre of the program that the user likes can be represented in the Euclidean space 20 using the cluster.

(Recommended program information selection unit selection process flow)
Next, with reference to FIG. 5 to FIG. 12, the flow of recommended program information selection processing in the recommended program information selection unit 11 f will be described. 5 to 11 are schematic diagrams showing the Euclidean space indicating the tendency degree of the genre of the program viewed by the user in the selection process of the recommended program information, and FIG. 12 is a program selected based on the selection process of the recommended program information. It is a display screen image of information.

  After the programs viewed by the user in the Euclidean space 20 shown in FIG. 5 are represented by clusters, a hypersphere including all these clusters in the Euclidean space 20 is generated. In order to generate this hypersphere, for example, the Ward method, which is one of cluster analyses, is used. In the Ward method, among clusters existing in the Euclidean space 20, clusters having the distance as a diameter are sequentially created from those having a short distance between the two clusters.

As shown in FIG. 5, a cluster having the shortest distance between two clusters among the clusters existing in the Euclidean space 20 is created. That is, in the case of the figure, a cluster 33 indicated by a dotted line whose diameter is the distance between the cluster 31 and the cluster 32 is created.
Next, as shown in FIG. 6, a cluster having a diameter of the distance between the two clusters among the clusters existing in the Euclidean space 20 is created. That is, in the case of the same figure, the cluster 43 shown with the dotted line which makes the distance between the cluster 41 and the cluster 42 a diameter is created.

  Further, as shown in FIG. 7, a cluster having a diameter of the distance between two clusters among the clusters existing in the Euclidean space 20 is created. That is, in the case of the figure, a cluster 52 indicated by a dotted line whose diameter is the distance between the cluster 33 and the cluster 51 is created. Further, since the distance between the cluster 33 and the cluster 51 is also the same, the cluster 55 having the diameter as the distance between the cluster 53 and the cluster 54 is also created.

Similarly, the above-described processing is repeated until there is one cluster in the Euclidean space 20. As a result of this processing, a supersphere 60 having a radius r is created in the Euclidean space 20, as shown in FIG.
This hypersphere represents a viewing history for each user. Therefore, as an example, if the user mainly views the “variety program”, a hypersphere 71 is generated near the x axis indicating the degree of variety tendency in the Euclidean space 70 as shown in FIG.

Also, if the user likes “baseball” or “golf” and “does not want to miss the drama because he does not want to keep up with the topic,” the drama tendency in the Euclidean space 80 as shown in FIG. A hypersphere 81 is generated in the vicinity between the y-axis indicating the degree and the z-axis indicating the sporting tendency.
In this way, preference characteristics of various genres that are completely different for each user can be expressed on the above-mentioned space without being limited to the classification of a single genre such as “sports” and “variety”. Therefore, the coordinate position where the supersphere is generated and the size (radius r) of the supersphere are also different for each user.

Then, as shown in FIG. 11, the program table information stored in the program table information storage unit 11e is stored in the Euclidean space 20 in the same procedure as the viewing history information storage process. It represents program guide information of an arbitrary broadcast wave for an arbitrary period. At the same time, the hypersphere 60 generated in the Euclidean space 20 is represented. Only clusters existing inside the supersphere 60 are set as recommended program information.
For example, among the clusters represented in the Euclidean space 20, the cluster 61 is a cluster that exists inside the hypersphere 60, and thus becomes a candidate for recommended program information. However, since the cluster 62 is a cluster existing outside the supersphere 60, it is not a candidate for recommended program information. Then, clusters that are candidates for recommended program information are selected from clusters that are close to the center of the hypersphere 60.

In this way, in the case of a user who likes a variety program, if the program includes a taste of variety tendency, even if it is a sports program, the user can watch the program only in the cluster included in the hypersphere. A wide range of information can be provided.
Also, for users who prefer “baseball” or “golf” and who do not want to miss the drama because they do n’t want to miss the topic, most of the program information related to the drama and sports You can get the same minutes. For this reason, it is less likely that "I was watching a baseball broadcast, so I accidentally missed the first special broadcast of the drama."

In this way, by expressing the preference characteristics of various program genres with different users in a hypersphere, the taste characteristics of various genres that are completely different for each user expressed in the hypersphere and the genres of diversified programs can be accurately expressed. You will be able to match.
Furthermore, after selecting a variety genre, detailed genres such as “quiz program”, “talk program”, and “comicage / comic” may be classified. As a result, even if the genre that the user likes becomes more diversified or the number of broadcast programs increases and the genre of the broadcast program further diversifies, the program information of the genre that the user likes is provided with higher accuracy. Can do. For example, it is possible to provide very optimal program information to a user such as “I can only watch laughter and talk in a variety of programs.”

In this embodiment, the supersphere is created until the number of clusters becomes one. However, if the radius of the supersphere exceeds a certain distance, the generation of the supersphere may be stopped. Thereby, the width of the candidate of recommended program information can be changed as appropriate.
Further, when providing program information to a user, for example, the program information can be provided for each genre with a screen image 90 as shown in FIG. The program information provided to the user can be arbitrarily changed by selecting the period selection unit 91 and the broadcast wave switching unit 92. In addition, when the program displayed in the program display column 94 is displayed with the color scheme displayed in the genre legend display section 93, the genre that the user particularly likes is good.
Note that the output display of the recommended program is not limited to the screen image shown in FIG. For example, a program part cell may be highlighted using a TV program guide screen, or may be displayed on a mobile phone or a personal computer Internet browser.

(Flow of recommended program selection processing of the program information providing server device)
Here, with reference to FIG. 13, the flow of the recommended program selection process of the program information providing server apparatus 11 will be described. FIG. 13 is a flowchart showing a flow of recommended program selection processing of the program information providing server device 11.
The viewing history information receiving unit 11b acquires viewing history information of a program viewed by the user transmitted from the user terminal device 12 (step S101). The viewing history information storage unit 11c stores viewing history information (step S102). If no recommended program guide information acquisition request is received from the user terminal device 12 (NO in step S103), the recommended program guide information acquisition request receiving unit 11a returns to step S101 and repeats the processing.

  When the recommended program guide information acquisition request receiving unit 11a receives the recommended program guide information acquisition request from the user terminal device 12 (YES in step S103), the recommended program information selecting unit 11f enters the Euclidean space based on the viewing history information. A cluster of program information is created (step S104). Subsequently, the recommended program information selection unit 11f creates a hypersphere in the Euclidean space (step S105).

  The program guide information acquisition unit 11d acquires program guide information from an electronic program guide or the like (step S106). The recommended program information selection unit 11f creates a cluster of program information in the Euclidean space based on the program guide information (step S107). Based on the program guide information, the recommended program information selection unit 11f acquires program information inside the hypersphere from the program information cluster created in the Euclidean space (step S108). The recommended program information transmission unit 11g transmits the program information selected by the recommended program information selection unit 11f to the user terminal device 12 as recommended program information (step S109).

(Flow of viewing history information storage / acquisition processing in the user terminal device)
Next, with reference to FIG. 14, the flow of the storage / acquisition process of viewing history information in the user terminal device 12 will be described. FIG. 14 is a flowchart showing a flow of storage / acquisition processing of viewing history information in the user terminal device 12.
The viewing program information acquisition unit 12a, the stored recording program information acquisition unit 12b, and the recording reservation information acquisition unit 12c acquire user viewing history information (step S201). The viewing history transmitting unit 12d transmits the acquired viewing history information to the program information providing server device 11 (step S201).

When the recommended program guide information acquisition request transmitting unit 12e transmits a recommended program guide information acquisition request by a user operation or the like (YES in step S203), the recommended program guide information receiving unit 12f is transmitted from the program information providing server device 11. Reception of recommended program guide information is started (step S204). When the recommended program guide information acquisition request transmission unit 12e does not transmit the recommended program guide information acquisition request (NO in step S203), the process returns to step S201 and is repeated.
The recommended program information accumulating unit 12g accumulates and outputs the recommended program guide information received by the recommended program guide information receiving unit 12f (step S205).

(Modification)
The above-described embodiments are merely examples, and various modifications can be made without departing from the scope of the technical idea shown in the claims.
In the present embodiment, the program information is expressed in three dimensions using three program genres, but the number of genres is not limited to this. Furthermore, it is also possible to express program information in six dimensions by adding each genre of information, music, and performing arts to the program genre.
(Summary)
According to the present invention, among the clusters corresponding to the broadcast program information arranged by the broadcast program information cluster arrangement unit, the broadcast program information corresponding to the cluster included inside the hypersphere generated by the supersphere generation unit is recommended. Select as program information. For this reason, it is possible to provide a wide variety of program information suitable for a genre that the user likes with a variety that varies from user to user from among a variety of program genres without being biased toward a specific genre.

  In particular, a program information providing system, a program information providing server device, and a program information providing system that provide program information of a genre that viewers prefer with different diversity for each user from a server to a mobile phone, a TV, and the like connected via a network Used as a method.

DESCRIPTION OF SYMBOLS 10 Program information provision system 11 Program information provision server apparatus 11a Recommended program schedule information acquisition request receiving part 11b Viewing history information receiving part 11c Viewing history information storage part 11d Program schedule information acquisition part 11e Program schedule information storage part 11f Recommended program information selection part 11g Recommended program information transmission unit 12-1 to 12-n User terminal device 12a Viewing program information acquisition unit 12b Accumulated recording program information acquisition unit 12c Recording reservation information acquisition unit 12d Viewing history transmission unit 12e Recommended program table information acquisition request transmission unit 12f Recommended program guide information receiving unit 12g Recommended program guide information accumulating unit 13 Network

Claims (5)

A program information providing server device, and a user terminal device connected to the program information providing server device via a communication network,
The program information providing server device includes:
Viewing history information acquisition means for acquiring viewing history information of a program viewed by a user transmitted from the user terminal device;
Viewing history program information cluster placement means for placing a cluster corresponding to the viewing history information acquired by the viewing history information acquisition means in the Euclidean space according to the genre of the program included in the viewing history information;
A hypersphere generating means for generating a supersphere including all the clusters arranged in the Euclidean space inside;
Broadcast program information acquisition means for acquiring broadcast program information;
Broadcast program information cluster arrangement means for arranging a cluster corresponding to the broadcast program information acquired by the broadcast program information acquisition means in the Euclidean space according to the genre of the program included in the broadcast program information;
Of the clusters corresponding to the broadcast program information arranged by the broadcast program information cluster arrangement means, the broadcast program information corresponding to the clusters included inside the hypersphere generated by the supersphere generation means is recommended program information. Program information selection means to select as,
Broadcast program information transmitting means for transmitting the recommended program information selected by the program information selecting means to the user terminal device;
With
The user terminal device is
Viewing history information acquisition means for acquiring the viewing history information;
The viewing history information transmitting means for transmitting the viewing history information acquired by the viewing history information acquiring means to the program information providing server device;
Recommended program information acquisition means for acquiring the recommended program information transmitted from the program information providing server device;
Recommended program information output means for outputting the recommended program information acquired by the recommended program information acquisition means;
A program information providing system comprising: A program information providing server device constituting a program information providing system together with a user terminal device,
Viewing history information acquisition means for acquiring viewing history information regarding a program viewed by a user transmitted from the user terminal device;
Viewing history program information cluster placement means for placing a cluster corresponding to the viewing history information acquired by the viewing history information acquisition means in the Euclidean space according to the genre of the program included in the viewing history information;
A hypersphere generating means for generating a supersphere including all the clusters arranged in the Euclidean space inside;
Broadcast program information acquisition means for acquiring broadcast program information;
Broadcast program information cluster arrangement means for arranging a cluster corresponding to the broadcast program information acquired by the broadcast program information acquisition means in the Euclidean space according to the genre of the program included in the broadcast program information;
Of the clusters corresponding to the broadcast program information arranged by the broadcast program information cluster arrangement means, the broadcast program information corresponding to the clusters included inside the hypersphere generated by the supersphere generation means is recommended program information. Program information selection means to select as,
Broadcast program information transmitting means for transmitting the recommended program information selected by the program information selecting means to the user terminal device;
A program information providing server device comprising: The program information selection means includes
3. The program information providing server device according to claim 2, wherein broadcast program information is selected as recommended program information from a cluster corresponding to the broadcast program information of an arbitrary period and an arbitrary broadcast type. The viewing history program information cluster arrangement unit and the broadcast program information cluster arrangement unit include:
The cluster is arranged based on a tendency degree of a genre of the program information calculated based on a morphological analysis result of text data included in the program information and an index value of TF-IDF. Program information providing server device. A program information providing method executed by a program information providing server device connected to a user terminal device via a communication network,
Viewing history information acquisition means for acquiring viewing history information of a program viewed by a user transmitted from the user terminal device by viewing history information;
Viewing history program information in which the viewing history program information cluster arranging means arranges the cluster corresponding to the viewing history information acquired in the viewing history information acquisition step in the Euclidean space according to the genre of the program included in the viewing history information. A cluster placement step;
A hypersphere generating step in which a supersphere generating means generates a hypersphere including all the clusters arranged in the Euclidean space inside;
Broadcast program information acquisition means for the broadcast program information acquisition means to acquire broadcast program information;
Broadcast program information cluster arrangement means for arranging a cluster corresponding to the broadcast program information acquired by the broadcast program information acquisition step in the Euclidean space according to the genre of the program included in the broadcast program information. A placement step;
Of the clusters corresponding to the broadcast program information arranged by the broadcast program information cluster arrangement step by the program information selection means, the broadcast program corresponding to the cluster included inside the hypersphere generated by the supersphere generation step A program information selection step for selecting information as recommended program information;
A program information providing method comprising: a broadcast program information transmitting step for transmitting the recommended program information selected in the program information selecting step to the user terminal device.

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