JP2011154527A - Information retrieval device, information retrieval method and information retrieval program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To retrieve a target of a commercial transaction fit for sensuous desire of a user. <P>SOLUTION: This information retrieval device retrieving the target of the commercial transaction according to a request from a terminal device performing connection to the information retrieval device via a network includes: a sentence information reception means receiving sentence information inputted by the user about the target of the commercial transaction from the terminal device; a keyword extraction means extracting a keyword from the received sentence information, and making a keyword storage device store the extracted keyword as a related keyword related to the target of the commercial transaction inputted with the received sentence information; a keyword reception means receiving the keyword inputted by the user from the terminal device; and a target extraction means extracting the target of the commercial transaction according with the keyword wherein the related keyword stored by the keyword storage device is received as a retrieval result. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a technical field of an information search device, an information search method, and an information search program for searching for a target of a commercial transaction such as a product or service in response to a request from a terminal device.

  Conventionally, a technique for performing a fuzzy search based on a keyword input by a user is known. For example, in the technique described in Patent Document 1, synonym expansion of an input keyword is performed, a text search of an electronic document is executed, and then a nearby figure is searched with reference to the allocation information of the electronic document. Further, in this technique, the narrower term of the keyword is expanded according to the meaning of the keyword, and the lower term is searched.

Japanese Patent Laid-Open No. 7-85092

  By the way, when a user wants something such as a product or a service, something that the user wants is not concrete in the mind, and the content of the desire may be vague and sensory (for example, “sweet” I want something ").

  However, even if the technique described in Patent Document 1 can be applied to a search for an object of a commercial transaction, a search corresponding to the vague desire of the user cannot be performed. This is because, for example, the technique described in Patent Document 1 merely performs a search by expanding the keyword “mouse” to a synonym or expanding it to a lower term.

  Therefore, the present invention has been made in view of the above points, and provides an information search device, an information search method, and an information search program that can search for a target of a commercial transaction that matches the sensory desire of a user. For the purpose.

  In order to solve the above-mentioned problem, the invention described in claim 1 is an information search device that searches for a target of a commercial transaction in response to a request from a terminal device connected via a network. Text information receiving means for receiving text information input by a user from the terminal device; a keyword is extracted from the received text information; and the extracted keyword is a target of a commercial transaction in which the received text information is input As a related keyword related to, keyword extracting means for storing in a keyword storage device, keyword receiving means for receiving a keyword input by a user from the terminal device, and the related keyword stored by the keyword storage device are received An object extraction means for extracting as a search result an object of a commercial transaction that matches the generated keyword, Characterized in that it comprises.

  According to this invention, the target of the commercial transaction in which the related keyword extracted from the text information input by the user regarding the target of the commercial transaction matches the keyword input by the user is searched. Therefore, when a user inputs a keyword that sensuously indicates his / her desire, a target of a commercial transaction that matches the desire can be searched.

  According to a second aspect of the present invention, in the information search device according to the first aspect, for each of the related keywords related to each commercial transaction target, a counting means for counting the number of extractions by the extraction means, and the number of extractions Based on the determination means for determining the level of the relationship between the target of the commercial transaction and the related keyword and the related keyword stored in the keyword storage device, it is determined that the relationship with the target of the commercial transaction is high. A first selection unit that selects the related keyword, and the target extraction unit extracts a target of a commercial transaction in which the related keyword selected by the first selection unit matches the received keyword. It is characterized by that.

  According to the present invention, based on how many times each related keyword is extracted, the level of the relationship between each related keyword and the object of the commercial transaction to which each related keyword is related is determined. Then, a related keyword that is highly related to a commercial transaction target is used for processing to determine whether to extract a related commercial transaction target. Therefore, it is possible to search for a target of a commercial transaction that is highly related to the user's sensory desire.

  According to a third aspect of the present invention, in the information search device according to the second aspect, the information processing device further comprises selection information receiving means for receiving selection information indicating selection by related high and low users from the terminal device, and the first selection The means is characterized in that, when the selection information indicates that one having a lower association is selected, the relevant keyword determined to have a lower association with a commercial transaction target is selected.

  According to the present invention, a target of a commercial transaction having a low association with the user's sensory desire is searched by the user's selection. Therefore, it is possible to search for an object of an unexpected commercial transaction.

  According to a fourth aspect of the present invention, in the information search device according to any one of the first to third aspects, the target extracting unit uses the related keyword stored in the keyword storage device. The system further comprises second selection means for selecting a related keyword, wherein the target extraction means extracts a target of a commercial transaction in which the related keyword selected by the second selection means matches the received keyword, The selecting means is characterized in that at least one of the related keywords to be selected is changed every time the target extracting means extracts.

  According to the present invention, since at least one of the related keywords used in the process of whether or not to extract the target of the corresponding commercial transaction changes at every search, even if the user inputs the same keyword as the previous time, the search result is May change from the previous time. Therefore, it is possible to search for an object of an unexpected commercial transaction.

  According to a fifth aspect of the present invention, in the information search device according to any one of the first to fourth aspects, the terminal device prompts the user to input a word that sensuously indicates the user's desire as a keyword. The information processing device further includes prompt information transmitting means for transmitting information to the terminal device, and the keyword receiving means receives a keyword transmitted from the terminal device that has received the prompt information.

  According to the present invention, the terminal device prompts the user to input, as a keyword, a word that sensuously indicates the user's desire based on the prompt information, so that the user knows what keyword should be input. be able to.

  According to a sixth aspect of the present invention, in the information search device according to any one of the first to fifth aspects, the text information represents at least one of a user's impression or opinion on a commercial transaction target in text. Information.

  According to the present invention, the related keywords extracted from the text information are likely to include related keywords indicating what the user feels or thinks about the object of the commercial transaction. Therefore, it is possible to search for a commercial transaction target that matches the sensory desire of the user.

  The invention according to claim 7 is an information retrieval method for retrieving an object of a commercial transaction in response to a request from a terminal device connected via a network, wherein the sentence information input by the user for the object of the commercial transaction is A sentence information receiving step received from a terminal device, a keyword is extracted from the received sentence information, and the extracted keyword is used as a related keyword related to an object of a commercial transaction in which the received sentence information is input. A keyword extraction step to be stored in a storage device, a keyword reception step for receiving a keyword input by a user from the terminal device, and a transaction for which the related keyword stored in the keyword storage device matches the received keyword. An object extraction step for extracting the object as a search result. The features.

  According to the eighth aspect of the present invention, text information entered by a user for a commercial transaction target is stored in a computer included in an information retrieval device that retrieves a commercial transaction target in response to a request from a terminal device connected via a network. The sentence information receiving means for receiving from the terminal device, the keyword is extracted from the received sentence information, the extracted keyword as a related keyword related to the target of the commercial transaction to which the received sentence information is input, Keyword extracting means for storing in a keyword storage device, keyword receiving means for receiving a keyword input by a user from the terminal device, and a commercial transaction in which the related keyword stored in the keyword storage device matches the received keyword Functions as a target extraction means that extracts the target of a search result And wherein the Rukoto.

  According to the present invention, a business transaction target in which a related keyword extracted from text information input by a user regarding a business transaction target matches the keyword input by the user is searched. Therefore, when a user inputs a keyword that sensuously indicates his / her desire, a target of a commercial transaction that matches the desire can be searched.

It is a figure showing an example of outline composition of shopping system S concerning one embodiment. It is a block diagram which shows an example of schematic structure of the shopping server 1 which concerns on one Embodiment. It is a flowchart which shows the process example of the goods review registration and attribute information extraction process in the system control part 20 of the shopping server 1 which concerns on one Embodiment. It is a flowchart which shows the process example of the search process in the system control part 20 of the shopping server 1 which concerns on one Embodiment. It is a screen display example of a search condition input page.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The embodiment described below is an embodiment when the present invention is applied to a shopping system in which goods are bought and sold by exchanging electronic information on a network.

[1. Overview of shopping system configuration and functions]
First, the structure and outline | summary function of the shopping system S which concern on this embodiment are demonstrated using FIG.

  FIG. 1 is a diagram illustrating an example of a schematic configuration of a shopping system S according to the present embodiment.

  As illustrated in FIG. 1, the shopping system S includes a shopping server 1 as an example of an information search device and a plurality of user terminals 2 as an example of a terminal device. And the shopping server 1 and each user terminal 2 can mutually transmit / receive data via the network NW, for example using TCP / IP etc. as a communication protocol. The network NW is constructed by, for example, the Internet, a dedicated communication line (for example, a CATV (Community Antenna Television) line), a mobile communication network (including a base station), a gateway, and the like.

  In the shopping system S having such a configuration, the shopping server 1 is a Web server that transmits a Web page constituting a shopping site to the user terminal 2 in response to a request from the user terminal 2. Then, the shopping server 1 performs processing such as product search and purchase based on a request from the user terminal 2 of the user who browsed the Web page.

  The user terminal 2 is a terminal device used by a user who purchases a product at a shopping site. As the user terminal 2, for example, a personal computer, a PDA (Personal Digital Assistant), a mobile phone, or the like is used.

  As a search for merchandise in the shopping system S, a search based on the sensory desire of the user is possible. For example, when the user wants sweet food, the user inputs “sweet” as a search word (an example of a keyword input by the user in the present invention). If it does so, goods related to "sweet" will be searched by keyword search.

  In the keyword search, an object to be compared with the search word is product attribute information (an example of a related keyword in the present invention). This attribute information is a keyword extracted from the product review text (an example of text information of the present invention). The product review text is a text input by the user as a review for the product. The content indicated by the product review text is, for example, an opinion such as an impression of using the product, a critique of the product, or a comment. In the attribute information, which is a keyword extracted from a sentence that expresses what the user felt or thought about the product, or thoughts about the product, a word expressed sensuously by the user with respect to the product It is considered to be included. Therefore, by comparing the search word that sensuously indicates the user's desire with the attribute information of the product, it is possible to search for a product that matches the sensory desire of the user. There are no specific conditions for inputting the product review text. That is, regardless of whether or not the user has purchased the target product using the shopping system S, and whether or not the user has used the target product, the user can read the product review text. Can be entered. Of course, a condition for inputting the product review text may be imposed. For example, only the person who purchased the target product using the shopping system S may be able to input the product review text.

  The product review text input by the user is transmitted from the user terminal 2 to the shopping server 1 and registered by the shopping server 1. Then, in response to a request from the user terminal 2, the shopping server 1 transmits a Web page that displays the product review text to the user terminal 2.

[2. Shopping server configuration]
Next, the structure of the shopping server 1 is demonstrated using FIG.

  FIG. 2 is a block diagram illustrating an example of a schematic configuration of the shopping server 1 according to the present embodiment.

  As shown in FIG. 2, the shopping server 1 includes an operation unit 11, a display unit 12, a communication unit 13, a drive unit 14, a storage unit 15, an input / output interface unit 16, a system control unit 20, It has. The system control unit 20 and the input / output interface unit 16 are connected via a system bus 21.

  The operation unit 11 includes, for example, a keyboard, a mouse, and the like. The operation unit 11 receives an operation instruction from an operator or the like, and outputs the instruction content to the system control unit 20 as an instruction signal. The display unit 12 includes, for example, a CRT (Cathode Ray Tube) display, a liquid crystal display, and the like, and displays information such as characters and images. The communication unit 13 is connected to a network NW or the like and controls the communication state with the user terminal 2 or the like. For example, the drive unit 14 reads data from a disk DK such as a flexible disk, a CD (Compact Disc), a DVD (Digital Versatile Disc), and the like, and records data on the disk DK. The storage unit 15 is configured by, for example, a hard disk drive or the like, and stores various programs, data, and the like. The input / output interface unit 16 performs interface processing between the operation unit 11 to the storage unit 15 and the system control unit 20. The system control unit 20 includes a CPU (Central Processing Unit) 17, a ROM (Read Only Memory) 18, a RAM 19, and the like.

  The storage unit 15 constitutes an example of a keyword storage device in the present invention. Various databases such as a member DB (database) 101, a store DB 102, a product DB 103, and a member use DB 104 are constructed in the storage unit 15. In the member DB 101, information related to users registered as members in the shopping site (for example, member ID, password, name, address, telephone number, mail address, etc. as member identification information) is registered in association with each user. Has been. Further, in the store DB 102, information about stores that sell products on the shopping site (for example, store ID, password, store name, address, telephone number, e-mail address, store guidance information, etc. as store identification information) is stored. It is registered in association with each store. Further, in the product DB 103, information on products sold on the shopping site (for example, store ID of a store that sells products, product ID as product identification information, and genre ID as identification information indicating a genre to which the product belongs) , Product name, price, product description information, product image, product review text, product attribute information, etc.) are registered in association with each store and each product. In addition, in the member use ID 104, user information related to the use of the shopping site (for example, a member ID, purchase history, browsing history, etc.) is registered for each user.

  In addition, the storage unit 15 stores various HTML (Hyper Text Markup Language) documents, image data, audio data, text data, and the like that constitute the Web page of the shopping site.

  Further, the storage unit 15 stores a predetermined operating system. In addition, the storage unit 15 uses the HTTP (Hyper Text Transfer Protocol) protocol to store Web pages based on various data stored in the storage unit 15 in response to a request transmitted from the user terminal 2 or the like. A WWW (World Wide Web) server program for transmission to the user terminal 2 or the like is stored. Furthermore, the shopping server 1 stores a shopping processing program that performs processing related to product search, purchase, and the like on the shopping site. The various programs may be acquired from other server devices or the like via the network NW, or may be recorded on a disk DK such as a CD-ROM and read via the drive unit 14. May be.

  The system control unit 20 controls each unit of the shopping server 1 by the CPU 17 reading and executing various programs stored in the ROM 18 and the storage unit 15. Further, the system control unit 20 functions as sentence information receiving means, keyword extracting means, object extracting means, counting means, determining means, first selecting means, second selecting means, and prompt information transmitting means in the present invention. It has become.

  In addition, you may comprise the shopping server 1 by several server apparatuses, such as a server which manages various databases, a search processing server which performs the search process of goods, and a WWW server which provides various information, for example.

[3. Operation of shopping system]
Next, operation | movement of the shopping system S is demonstrated using FIG. 3 thru | or FIG.

  FIG. 3 is a flowchart showing a processing example of the product review registration / attribute information extraction processing in the system control unit 20 of the shopping server 1 according to the present embodiment.

  For example, the user designates a desired product and performs an operation for instructing input of a product review. Then, the user terminal 2 transmits a request for a product review input page, which is a Web page for inputting a product review text. The product review registration / attribute information extraction process is started when a request for a product review input page is received.

  First, the system control unit 20 transmits a product review input page to the user terminal 2 (step S1). The user terminal 2 receives the product review input page and displays it on the screen. When the user inputs the product review text, the user terminal 2 transmits the product review text data and the product ID of the product specified by the user to the shopping server 1. Then, the system control unit 20 receives the product review text data and the product ID, and registers the product review text data in the product DB 103 in association with the product ID (step S2).

  Next, the system control unit 20 performs morphological analysis on the received product review text data and extracts keywords from the product review text. For example, the product review text for the product “XX Zenzai” says, “The taste is moderately sweet. For example, “Taste”, “Sweet”, “Texture”, “Shiratama”, “Smooth”, “Delicious”, “Everyone”, “Once”, “Eat”, “O Keywords such as “recommended” are extracted. In addition, since the technique itself which extracts a keyword based on a morphological analysis etc. is well-known, detailed description of the process which extracts a keyword is abbreviate | omitted.

  Next, the system control unit 20 registers each extracted keyword as product attribute information in the product DB 103 in association with the received product ID (step S4).

  When the process of step S4 is completed, the system control unit 20 ends the product review registration / attribute information extraction process.

  FIG. 4 is a flowchart showing a processing example of search processing in the system control unit 20 of the shopping server 1 according to the present embodiment. FIG. 5 is a screen display example of the search condition input page.

  For example, the user performs an operation of selecting a search. Then, the user terminal 2 transmits a request for a search condition input page, which is a Web page for inputting the search condition. The search process is started when a request for a search condition input page is received.

  First, the system control unit 20 transmits a search condition input page to the user terminal 2 (step S11). The user terminal 2 receives the search condition input page and displays it on the screen.

  As shown in FIG. 5, the search condition input page includes a message 201 (an example of prompt information in the present invention), a search word input field 202, a genre selection menu 203, a search button 204, and the like. The message 201 is a message that prompts the user to input a word that sensuously indicates the user's desire as a search word. For example, a message such as “Please enter what you want and enter the image as a search word” is displayed. The search word input field 202 is an input form for inputting one or a plurality of search words. The genre selection menu 203 is a pull-down menu for selecting a genre as a product search range. In the genre selection menu 203, all genres are selected as an initial state.

  When the user inputs a search word, selects a genre, and selects the search button 104, the user terminal 2 transmits the input search word and a genre ID indicating the selected genre to the shopping server 1, and the system The control unit 20 receives the search word and the genre ID (step S12).

  Next, the system control unit 20 refers to the product DB 103 and selects one product belonging to the selected genre indicated by the received genre ID (step S13).

  Next, the system control unit 20 acquires all the attribute information of the selected product from the product DB 103, and compares the received search word with each of all the attribute information of the selected product (step S14).

  Next, the system control unit 20 determines whether or not attribute information that matches the received search word exists in each attribute information of the selected product based on the comparison result of Step S14 (Step S14). S15). At this time, if there is attribute information that matches the received search word (step S15: YES), the system control unit 20 adds the product ID of the selected product to the search result list (step S16). . The search result list is information indicating a list of product IDs of the searched products. In addition, when a plurality of search words are input, it may be set as a condition to add to the search result list that all search words respectively match any attribute information (that is, AND search is performed) A condition that at least one search word matches any attribute information may be set as a condition to be added to the search result list (that is, an OR search is performed). Moreover, you may enable it for a user to select which conditions are used.

  The system control unit 20 belongs to the selected genre indicated by the received genre ID when there is no attribute information that matches the received search word (step S15: NO) or when the process of step S16 is finished. It is determined whether or not there is a product that has not yet been selected in the product (step S17). At this time, if there is a product that has not yet been selected among the products belonging to the selected genre indicated by the received genre ID (step S17: YES), the system control unit 20 selects the selection indicated by the received genre ID. One product that has not yet been selected is selected from the products belonging to the genre (step 13), and the processes of steps S14 to S17 are executed.

  If there is no product that has not yet been selected among the products belonging to the selected genre indicated by the received genre ID (step S17: NO), the system control unit 20 searches based on the search result list. A search result page, which is a Web page indicating the result, is generated (step S18). Specifically, the system control unit 20 generates an HTML document for displaying a list of products indicated by the product ID set in the search result list based on information registered in the product DB 103 or the like.

  Next, the system control unit 20 transmits the generated search result page to the user terminal 2 (step S19). Then, on the search result page displayed by the user terminal 2, the product name, price, name of store to be sold, and the like are displayed.

  When completing the process of step S19, the system control unit 20 ends the search process.

[4. Modified example]
[4.1 Modification 1]
In the above-described embodiment, the system control unit 20 searches for a product by comparing all the attribute information of the product with a search word. However, you may select the attribute information used for a search based on the relevance degree of goods and attribute information.

  Specifically, the system control unit 20 registers the number of extractions of each attribute information in the product DB 103 in association with each attribute information of the product. When the system control unit 20 extracts a keyword from the product review text and registers it as attribute information, the attribute information of the product targeted by the input product review text is the same attribute information as the attribute information to be registered. Is already registered, 1 is added to the number of extractions associated with the attribute information.

  Based on the number of times attribute information is extracted, the system control unit 20 determines whether the relationship with the product associated with the attribute information is high or low. For example, the system control unit 20 determines that attribute information whose extraction count value is larger than a preset threshold value is highly related to the product, and attribute information whose extraction count value is less than or equal to the threshold value is It is determined that the relationship with the product is low.

  Then, the system control unit 20 searches for the product by comparing only the attribute information determined to be highly relevant to the product among the attribute information associated with the product with the search word.

  In addition, the determination method of the relation with the product based on the number of extractions of attribute information is not limited to the above. For example, the system control unit 20 calculates the total value of the number of extractions of attribute information for the target product, and calculates the ratio of the number of extractions of each attribute information to the total value. Then, the system control unit 20 determines that attribute information in which the calculated ratio is greater than a preset threshold value is highly related to the product, and attribute information in which the calculated ratio is less than or equal to the threshold value is It may be determined that the relationship with is low. Further, the system control unit 20 determines that the attribute information from the first place to the preset order in the descending order of the number of extractions for the target product is high in relation to the product, and the preset order. It may be determined that attribute information that does not enter by the date has a low association with the product.

  Also, the user may select whether to use attribute information that is highly related to the product or to use attribute information that is not related to the product. For example, on the search input page, a button or the like for selecting a highly relevant low is provided. The shopping server 1 receives, from the user terminal 2, information indicating which one of the higher or lower relation is selected together with the search word. Then, when the more related one is selected, the system control unit 20 searches for the product by comparing only the attribute information determined to be highly related to the product with the search word. On the other hand, when the lower association is selected, the system control unit 20 searches for the product by comparing only the attribute information determined to be less related to the product with the search word.

  The attribute information having a low relationship with the product is a keyword extracted at least once from the product review text, so it is considered that there is at least some relationship with the product. However, since the degree of association is low, it is possible to present an unexpected product to the user as a search result.

[4.2 Modification 2]
Even when the same search word is input, a different search result may be presented to the user each time.

  Specifically, the system control unit 20 selects and changes the attribute information used for the search for each product for which information is registered in the product DB 103 at each search. For example, at least one of the attribute information used for the search may be changed between the previous search and the current search, or the number of attribute information used for the search may be changed. Moreover, you may determine the attribute information selected as attribute information used for a search at random, for example.

  As described above, since the search result may change every time, the unexpectedness of the search result can be emphasized.

  As described above, according to the present embodiment, the system control unit 20 receives the product review text data input by the user from the user terminal 2, extracts the keyword from the product review text, and extracts the extracted keyword. Is registered in the product DB 103 in association with the product ID of the product for which the product review text is input, the search word transmitted from the user terminal 2 is received, and the attribute information registered in the product DB 103 is the search word. And the search result page showing the list of the extracted products is transmitted to the user terminal 2.

  Therefore, a product whose attribute information, which is a keyword extracted from a sentence input by the user for the product, matches the search word input by the user is searched. Therefore, when a user inputs a search word that sensuously indicates his / her desire, a product that matches the desire can be searched.

  In addition, the system control unit 20 transmits a search condition input page that displays a message 201 that prompts the user to input a word that sensuously indicates the user's desire as a search word.

  Therefore, by reading the message 201 displayed by the user terminal 2, the user can know what keyword should be input.

  The product review text is a text that represents at least one of the user's impressions and opinions about the product.

  Accordingly, the extracted attribute information tends to include attribute information indicating what the user feels or thinks about the product.

  Further, the system control unit 20 counts the number of extractions of keywords as attribute information for each attribute information corresponding to each product, and determines the level of association between the product and the attribute information based on the number of extractions. Of the attribute information registered in the product DB 103, the attribute information determined to be highly relevant to the product may be selected, and the product for which the selected attribute information matches the search word may be extracted.

  In this case, the attribute information determined to be highly relevant to the corresponding product based on the number of extractions is used for processing whether or not to extract the corresponding commercial transaction target. Therefore, it is possible to search for a product highly relevant to the user's sensory desire.

  In addition, the system control unit 20 transmits information indicating the selection of the related level from the user terminal 2, and selects the attribute information that is determined to be low in relation to the product when the low level of relation is selected. Then, a product whose selected attribute information matches the search word may be extracted.

  In this case, a product with a low association with the sensory desire of the user is searched by the user's selection. Therefore, it is possible to search for an unexpected product.

  Further, the system control unit 20 may select attribute information used for product extraction from the attribute information registered in the product DB 103, and change at least one of the selected attribute information each time the search is performed. .

  In this case, since at least one of the attribute information used in the process of whether or not to extract the corresponding product changes at every search, even if the user inputs the same search word as the previous time, the search result is the same as the previous time. May change. Therefore, it is possible to search for an unexpected product.

  In addition, in the said embodiment, although the object of the commercial transaction in this invention was applied to goods, and this invention was applied to the shopping system for buying and selling goods, the application object is not restricted only to this. For example, the object of the commercial transaction in the present invention may be applied to a service that can be traded, and the present invention may be applied to a system for trading the service. Examples of services that can be traded include provision of accommodation facilities, transportation by transportation, and provision of competition facilities such as golf courses. As a system for trading services, there are, for example, a reservation system for accommodation facilities, a reservation system for boarding passes and boarding tickets for transportation facilities, a reservation system for use of competition facilities, and the like.

  In addition, the system to which the present invention is applied may not be configured to actually trade the object of the commercial transaction. The present invention can be applied to any system that searches for at least a commercial transaction target and provides the user with information related to the retrieved commercial transaction target.

DESCRIPTION OF SYMBOLS 1 Shopping server 2 User terminal 11 Operation part 12 Display part 13 Communication part 14 Drive part 15 Storage part 16 Input / output interface part 17 CPU
18 ROM
19 RAM
20 System control unit 21 System bus 101 Member DB
102 Store DB
103 Product DB
104 Member use DB
NW Network S Shopping System

Claims (8)

An information search device that searches for a target of a commercial transaction in response to a request from a terminal device connected via a network,
Text information receiving means for receiving text information input by the user about the object of the commercial transaction from the terminal device;
A keyword extracting means for extracting a keyword from the received text information, and storing the extracted keyword in a keyword storage device as a related keyword related to a target of a commercial transaction in which the received text information is input;
Keyword receiving means for receiving a keyword input by a user from the terminal device;
A target extracting means for extracting, as a search result, a target of a commercial transaction in which the related keyword stored by the keyword storage device matches the received keyword;
An information retrieval apparatus comprising: The information search device according to claim 1,
Count means for counting the number of extractions by the extraction means for each of the related keywords related to each commercial transaction target,
Determination means for determining the level of the relationship between the object of commerce and the related keyword related based on the number of times of extraction;
A first selection means for selecting the related keyword determined to be highly related to a commercial transaction object from the related keywords stored by the keyword storage device;
Further comprising
The information extraction device, wherein the target extraction unit extracts a target of a commercial transaction in which the related keyword selected by the first selection unit matches the received keyword. The information search device according to claim 2,
Further comprising selection information receiving means for receiving selection information indicating the selection by the related high and low users from the terminal device;
The first selection means, when the selection information indicates that the one having a lower association is selected, selects the related keyword determined to have a low association with the object of the commercial transaction. Search device. The information search device according to any one of claims 1 to 3,
A second selecting means for selecting the related keyword used by the target extracting means from the related keywords stored in the keyword storage device;
The target extraction unit extracts a target of a commercial transaction in which the related keyword selected by the second selection unit matches the received keyword,
The information search apparatus according to claim 2, wherein the second selection unit changes at least one of the related keywords to be selected every time the target extraction unit extracts. The information search device according to any one of claims 1 to 4,
Further comprising prompt information transmitting means for transmitting to the terminal device prompt information for prompting the terminal device to input a word that sensuously indicates a user's desire as a keyword;
The keyword search means receives a keyword transmitted from the terminal device that has received the prompt information. In the information search device according to any one of claims 1 to 5,
The said text information is the information which represented at least any one of the user's impression with respect to the object of a commercial transaction, or an opinion in text. An information search method for searching for a target of a commercial transaction in response to a request from a terminal device connected via a network,
A sentence information receiving step of receiving sentence information input by a user about a target of a commercial transaction from the terminal device;
A keyword extracting step of extracting a keyword from the received sentence information, and storing the extracted keyword in a keyword storage device as a related keyword related to a commercial transaction target to which the received sentence information is input;
A keyword receiving step of receiving a keyword input by a user from the terminal device;
A target extraction step of extracting, as a search result, a target of a commercial transaction in which the related keyword stored by the keyword storage device matches the received keyword;
A method for retrieving information, comprising: A computer included in an information search device that searches for a target of a commercial transaction in response to a request from a terminal device connected via a network,
Text information receiving means for receiving text information input by a user for a commercial transaction object from the terminal device;
A keyword extracting means for extracting a keyword from the received text information and storing the extracted keyword in a keyword storage device as a related keyword related to a target of a commercial transaction in which the received text information is input;
Keyword receiving means for receiving a keyword input by a user from the terminal device; and
A target extracting means for extracting, as a search result, a target of a commercial transaction in which the related keyword stored by the keyword storage device matches the received keyword;
Information search program characterized by functioning as

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