JP2002157266A - Information presentation method and information presentation host - Google Patents

Abstract

(57) [Summary] [Problem] To provide an information presenting method and an information presenting host capable of efficiently presenting appropriate information to a user from a large number of information classified into a plurality of classifications. SOLUTION: When introducing product information belonging to a specific group to a user as recommended products, product information accessed by the user is extracted, and other users accessing the product information are extracted. And extracting, from the users, users who have accessed the product information of the specific group, and presenting one or more pieces of product information of the specific group accessed by the user.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information presenting method and an information presenting host for presenting information suitable for a user from a large number of stored information.

[0002]

2. Description of the Related Art This type of information presentation is performed by accumulating a large amount of information on goods and services to be provided on a Web site such as a so-called virtual shopping mall or an electronic mall, and accessing the Web site. It is used in a situation where information such as a product is presented to a user who has performed the job. Hereinafter, information presentation in such a case will be described.

[0003] In a Web site handling a large number of products and the like, product information such as products to be provided is classified and presented in various genres, and product information on special products and special offers is individually presented. In addition, product information was presented by further classifying specialty products and special offers. FIG. 22 to FIG.
5 shows an example of a screen image displayed on a terminal of a user who has accessed a conventional product sales site. First, when the user accesses this product sale site, the category of the sale product is displayed as shown in FIG. When the user selects one of them (group A in the figure), a list of products belonging to this classification is displayed as shown in FIG. When the user selects one of them (product A1 in the figure), as shown in FIG. 24, various information on the product is displayed, and when the user presses the purchase button and transmits a purchase request, FIG. As shown in FIG. 7, a confirmation screen for product sale is displayed. In such a Web site, when presenting a recommended product to a user or providing a privilege such as a discount coupon, it is important how to present product information that the user is likely to be interested in. There is an issue.

[0004] As a general method for solving this problem,
There is a method in which a user specifies a genre of interest in advance. However, this method has a problem that it is difficult to grasp detailed interest. In addition, there is a problem that the user cannot individually present product information from among a large number of product information included in a genre of interest.

[0005]

On the other hand, there has been known a method of grasping the interest of a user by using an access history to each product. This method is characterized in that merchandise information can be individually presented by analyzing an access history for each merchandise.

A well-known method for such analysis is a collaborative filtering method.
In this collaborative filtering method, the access history of one user is compared with the access history of another user, and another user having a similar access history is found, so that the relationship between products and the product Have a relationship with users. As a result, if there is a history of access to some products from the entire product, the product information can be individually presented. FIG. 26 shows a conceptual diagram of this collaborative filtering.

[0007] However, in this method, the product information is presented from the entire product irrespective of the classification of the product, and if the product is further classified, there is information that can be presented in this classification. As a result, recommended product information cannot be presented to the user as a result.

One method of avoiding this is to regard a group of target products as an individual group. However, if the number of products included in the group is small, the user accesses the products in the group in the first place. In some cases, there is no basis for the presentation, and there is a problem that the presentation cannot be made. That is, FIG.
As shown in the figure, when the product information is classified into groups 901 to 906 with respect to a set 900 of the entire product information and one user does not access the product information of the group 906, Group 906
Could not be presented.

The present invention has been made in view of the above circumstances, and a purpose thereof is to efficiently provide appropriate information to a user from a large number of information classified into a plurality of categories. An object of the present invention is to provide an information presenting method and an information presenting host capable of presenting.

[0010]

In order to achieve the above object, according to the present invention, a large number of pieces of presentation information classified into a plurality of groups are stored in a storage means, and the presentation information stored in the storage means is used. In an information presentation method using a computer for presenting to a user's terminal via a network, related information indicating the relevance between each user and the presentation information stored in the information storage means is stored in advance in the storage means. Presenting information belonging to a specific group to one user is based on the related information stored in the storage means, and extracts presentation information having relevance to the user as an extraction target for all groups. An extracting step, a second extracting step of extracting all users having an association with the extracted presentation information as an extraction target, and the specific group from the extracted users. Extracting a user having a relationship with the presentation information belonging to the group, and extracting one or more pieces of presentation information from the presentation information having a relationship with the extracted user and belonging to the specific group. A fourth aspect of the present invention proposes a feature including a fourth extraction step of extracting and a step of presenting the extracted presentation information to a user.

According to the present invention, in the first extraction stage, a list of presentation information relevant to one user is extracted.
Then, in the second extraction stage, a list of users having relevance to this presentation information is extracted. Next, a list of users accessing a specific group is extracted from the users in a third extraction stage. Then, in the fourth extraction stage, the presentation information belonging to a specific group is extracted from the presentation information relevant to the user. Here, the second
The list of users extracted in the extraction stage is considered to be users who are strongly related to one user, but this list of users is based on the presentation information extracted in the first extraction stage. Since it is extracted, the amount of extraction increases. A feature of the present invention is that before performing the fourth extraction step, by reducing the amount of this user list,
The point is that the processing time of the fourth extraction stage is greatly reduced. Thereby, the processing speed of information presentation can be improved as a whole.

Here, the presentation information is not particularly limited as long as it is information to be presented to the user, and may be, for example, information comprising provision of goods or services. The related information may be information indicating the relevance of the user and the presented information, regardless of its type, for example, information indicating that the user has accessed the presented information, or a product related to the presented information by the user. May be information indicating purchase or a purchase contract.

According to the present invention, in the information presenting method, the related information is weighted between the user and the presented information by a predetermined calculation formula, and the weight is used in each of the extracting steps. A feature is proposed in which extraction priorities are set and extraction is performed based on the priorities.

According to the present invention, the extraction priority is set by using the weight between the user and the presentation information at each extraction stage, and the extraction is performed based on this priority. The processing speed can be improved by increasing or reducing the amount of extraction at each extraction stage.

Further, in the present invention, when information relating to provision of a product or service to a user is used as the presentation information, additional information relating to provision of a product or service is presented to the user together with the presentation information. I suggest something.

According to the present invention, it is possible to add value to the provision of a product or the like, so that more effective information can be presented. As an example of a preferred aspect of the present invention, the additional information includes information relating to discount information of a price for the product or service that is obtained by a user when purchasing or contracting for a product or service. Suggest what to do. Further, it is proposed that the additional information includes information relating to another product or service that can be obtained by the user when the user purchases or contracts for the product or service.

Further, according to the present invention, when a user purchases or subscribes for a product or service related to the presented information in accordance with the presented presentation information, the purchase information of the product or service is transmitted to the information provider. We propose what is characterized by

According to the present invention, a product provider can obtain information on the purchase of a product or the like, which is highly convenient for the product provider. As an example of a preferred aspect of the present invention, the present invention proposes a feature that transmits the additional information together with purchase information to a provider of products or the like.

Further, in the present invention, information relating to provision of a product or service to a user is used as the presentation information, and the user purchases a product or service relating to the presentation information according to the presented presentation information. A proposal is made to charge a product provider of the product or service when a purchase contract is made.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) A first embodiment of the present invention will be described with reference to the drawings. In the present embodiment, in a product sales system that sells products and services to users via a network, a product recommended for a user of a product to which a specific group belongs among products classified into a plurality of groups (genres). The case where the information is introduced will be described. FIG. 1 is a configuration diagram of a product sales system according to the first embodiment.

As shown in FIG. 1, the merchandise sales system includes a merchandise sales host 100, a user terminal 200,
The system includes a settlement host 300 that performs settlement related to merchandise sales, a merchandise provider terminal 400 that provides merchandise sold by the merchandise sales host 100, and a network 500 that connects these terminals.

The product sales host 100 is connected to the network 5
Communication control unit 110 which is a communication interface with
A database 120 for storing various information (hereinafter, referred to as “product information”) of sales products to be presented to the user and an access history of the user accessing each product information; a user terminal 200, a payment host 300, Product provider terminal 40
A sales management unit 130 that performs processing related to sales information and management information of various products between 0 and 0, and extracts a recommended product in a specific group to one user according to a request from the sales management unit 130 and sells the result. An extraction unit 140 for returning to the management unit 130.

The database 120 stores a merchandise information table 121 concerning merchandise to be sold. As shown in FIG. 2, the product information table 121 stores information on all products handled by the product sales host 110, and each product information includes information on the product group. In FIG. 2, the first digit of the product code is handled as the group.

The database 120 stores an access history 122 of each user viewing product information. As shown in FIG. 3, the access history 122 includes a user identifier capable of uniquely identifying a user and a product code of a product accessed by the user.

Further, as shown in FIG. 4, the database 120 stores an additional information table 123 which stores additional information for each product. Here, the additional information means information relating to the added value of the product by using the present system, such as discount information of the product or present information of another product accompanying the purchase of the product. This additional information is stored in the additional information table 123 using each product code as a key.

The sales management unit 130 presents product information and the like of various products in response to access from the user, performs sales processing of the products, and exchanges various product information with the product provider terminal 400. Management. The sales management unit 130 stores the access history of the user in the access history 122 of the database 120. Further, when there is a request to present the product information of the specific group from the user terminal 200, the sales management unit 130
0 is requested to generate a list of recommended products for the user.

The extraction unit 140 comprises four extraction units 141 to 1
44 are connected in series. First extraction unit 1
Reference numeral 41 denotes a database which receives the user identifier and group name of the user received from the sales management
A list is generated with reference to 0, and the list is passed to the second extraction unit 142 at the subsequent stage. Second and third extraction units 142, 143
Generates lists based on the output lists of the extraction units 141 and 142 in the preceding stage and the database 120, respectively, and passes the lists to the extraction units 143 and 144 in the subsequent stage. Fourth extraction unit 1
44 generates a list based on the output list of the third extraction unit 143 and the database 120, and passes this to the sales management unit 130. The detailed operation of each of the extraction units 141 to 144 will be described later.

The user terminal 200 is connected to the network 500
A communication control unit 210 which is a communication interface with the user, and a user interface unit 220 which displays various information to a user and receives an input from the user.

The settlement host 300 is for operating a financial institution, for example, and performs settlement between the operator of the merchandise sales host 100 and the merchandise provider and between the user and the merchandise sales host 1.
Settlement with the operator at 00 is performed via the network 500.

The merchandise provider terminal 400 is a terminal used by a merchandise provider who sells merchandise at the merchandise sales host 100, and can transmit and receive various information such as merchandise information to and from the merchandise sales host 100.

Next, the operation of the product sales system according to the present embodiment will be described with reference to the drawings. FIG. 5 is a flowchart illustrating the operation of the product sales system according to the first embodiment.

Here, when the user 1 who has “1” as the user identifier and has not accessed the product information belonging to the group C in the past has requested the presentation of the product information of the group C, The following describes an example in which recommended products are extracted from the group C and presented to the user 1.

First, the merchandise sales host 100 transmits a screen prompting the user terminal 200 to select a group,
The user operates the user terminal 200 to select a specific group (step S1). FIG. 6 shows an example of a screen image of the user terminal 200 when the group is selected. Here, it is assumed that the user 1 has selected the group C.

Next, upon receiving the information of the selected group from the user terminal 200, the sales management unit 130 of the product sales host 100 passes the user identifier and group information of the user to the extraction unit 140, and Is requested to generate a list of recommended products (steps S2 to S5). Hereinafter, the processing in the extraction unit 140 will be described in detail.

First, the first extracting unit 141 generates a list of product codes related to product information accessed by the user in the past with reference to the access history 122 of the database 120 (step S2). FIG. 7 shows the first extraction unit 14.
1 shows an example of a product list generated in Step 1.

Next, the second extraction unit 142
A list of other users who have accessed the product information of each product in the product list generated in 41 is generated (step S3). FIG. 8 shows an example of the user list generated by the second extraction unit 142.

Next, the third extracting unit 143 sets the second extracting unit 1
Among the users in the user list generated in 42, users who have accessed a specific group are extracted to generate a user list (step S4). Specifically, first, a list of users who have accessed the specific group is generated. FIG. 9 shows an example of this user list. Then, the user list is compared with the user list (see FIG. 8) extracted by the second extracting unit 142, and only the user having the matching user identifier is extracted. FIG. 10 shows an example of the user list extracted by the third extraction unit 143.

Next, the fourth extractor 144 outputs the third extractor 1
A list of merchandise codes related to merchandise information belonging to a specific group to which each user of the user list generated in 43 has accessed (step S5). This product list is a list of recommended products of a specific group for the user. FIG. 11 shows an example of this product list.

Next, the sales management unit 130 sets the fourth extraction unit 1
Upon receiving the product list extracted in step 44, the product information of each product in the product list is transmitted to the user terminal 200, specifying that the product is a recommended product (step S6). At this time, the additional information table 1 stored in the database 120 as necessary for the product
23, the additional information is extracted and added. FIG.
3 shows an example of a screen image of the user terminal 200 on which recommended products are presented. Here, when the user selects the presented recommended product, the product information is displayed together with the additional information as shown in an example of a screen image in FIG.
When the user purchases this product, the discount or present shown in the additional information is applied.

When the user selects to purchase a product in this product sales system, and when the product is the recommended product, the settlement host 300 is used to charge the provider of the product an intermediary fee. (Step S
7, S8). At this time, if the additional information has been presented to the user, the additional information is transmitted to the product provider. Then, a purchase process for the product is performed with the user terminal 200 (step S9).

As described above, in the merchandise sales system according to the present embodiment, when a user selects a specific group when the merchandise is classified into a plurality of groups, the user selects a specific group in the past. Even when no access has been made, product information of recommended products is presented based on the access history of each user. Therefore, it is possible to effectively present product information.

Further, the merchandise sales system according to the present embodiment has an advantageous effect that the process of extracting recommended merchandise to the user is extremely efficient. That is,
In the present embodiment, the extraction processing is performed in each of the first to fourth extraction units 141 to 144. However, if the only purpose is to obtain the same result, the user list is narrowed down by the third extraction unit 143. Need not be performed. However, in this case, the user list input to the fourth extraction unit 144 becomes large, so that a long time is required for processing in the extraction unit. According to the present invention, by narrowing down the user list generated by the second extraction unit 142 by the third extraction unit 143, the processing time by the fourth extraction unit 144 is greatly reduced. This shortens the processing time as a whole.

For example, each group has about 1 million merchandise information, each group has about 100 merchandise information, each user has an average access number of about 100, and one merchandise information has an average of 100 persons. Assume that the user is accessing. In this case, the user list obtained through the first extraction unit 141 and the second extraction unit 142 is a 10,000 user list. Therefore, the expected value of the number of users in the user list obtained by the third extraction unit 143 is 100. As described above, by narrowing down the user list in the third extraction unit 143, the necessary processing in the fourth extraction unit 144 becomes 100
It is reduced by a factor of one.

In the present embodiment, when presenting recommended products, discount information, present information, and the like are presented as additional information. That is, since the added value is provided in the presentation of the recommended product, it can be effectively used for sales promotion and the like.

Further, in the present embodiment, when a recommended product is purchased, an intermediary fee is charged to a product provider of the recommended product. Deployment becomes possible.

(Second Embodiment) A second embodiment of the present invention will be described with reference to the drawings. In this embodiment, in a merchandise sales system such as a virtual shopping mall that mediates merchandise sales, one merchandise is introduced to all users who access one store in the mall.

The difference between the merchandise sales system and the first embodiment lies in the extraction processing in the extraction unit 140. The other configuration is the same as that of the first embodiment, and the description thereof is omitted here, and only the differences will be described.

In the merchandise information table 121 of the database 120 according to the present embodiment, the classification of each merchandise is set on the basis of the store in the virtual shopping mall.
As in the first embodiment, each store is identified in the first digit of the product code.

The operation of the merchandise sales system according to this embodiment will be described below. Here, when the user 1 who has “1” as the user identifier and has not accessed the product information belonging to the store S in the past, accesses the store S for the first time, A description will be given by taking a case where a recommended product is extracted and presented to the user 1 as an example.

First, the merchandise sales host 100 transmits a screen prompting the user terminal 200 to select a store, and the user operates the user terminal 200 to select a specific store. FIG. 14 shows an example of a screen image of the user terminal 200 when this group is selected. Here, it is assumed that the user 1 has selected the store S.

Next, upon receiving the information of the selected store from the user terminal 200, the sales management unit 130 of the product sales host 100 passes the user identifier of the user and the store information to the extraction unit 140, and Request a list of recommended products for. Hereinafter, the processing in the extraction unit 140 will be described in detail.

First, the first extracting unit 141 refers to the access history 122 of the database 120 to generate a list of product codes related to product information accessed by the user in the past. Here, a weight is calculated and added to this list for each product. Specifically, the number of accesses made in the past is calculated as a weight. FIG. 15 shows an example of the product list generated by the first extraction unit 141. In the figure, for example, “product B1” having the largest number of access times
Has been accessed twice, so the weight is 2.

Next, the second extraction unit 142
A list of other users who have accessed the product information of each product in the product list generated in 41 is generated. At this time, the number of times the user has accessed the product information is added as a weight to the user list. FIG. 16 shows the second extraction unit 1
42 shows an example of the user list generated in 42.

Next, the third extraction unit 143 sends the second extraction unit 1
Among the users in the user list generated in 42, users who have accessed a specific store are extracted to generate a user list. Specifically, first, a list of users who have accessed a specific store is generated. FIG. 17 shows an example of this user list. Then, the user list and the user list extracted by the second extracting unit 142 (FIG. 15)
), And only the user having the matching user identifier is extracted. At this time, for a plurality of users, the respective weights are added together to calculate the weight, and the calculated weight is used as the weight of the user. FIG. 18 shows an example of the user list extracted by the third extraction unit 143. In the figure, for example, "user 27" appears twice in FIG. 16, and the weight of each user is 2 and 1, so the weight of user 27 is 3.

Next, the fourth extractor 144 outputs the third extractor 1
A list of merchandise codes related to merchandise information belonging to a specific store to which each user of the user list generated in 43 has accessed has been generated. Here, a weight is calculated and added to this product list for each product. This product list is a list of recommended products for the user at the specific store. FIG. 19 shows an example of this product list. In the figure, for example, in the case of “product S89”, the user 27 and the user 323
The weights 3 and 2 are added to give a value of 5.

Next, the sales management unit 130 sets the fourth extraction unit 1
When the product list extracted in step 44 is received, the product information having the largest weight among the product information of each product in the product list is transmitted to the user terminal 200 while clearly indicating that the product is a recommended product. . At this time, as in the first embodiment, additional information is extracted from the additional information table 123 stored in the database 120 as needed for the product and added. FIG. 20 shows an example of a screen image of the user terminal 200 on which recommended products are presented. Here, when the user selects the presented recommended product, the product information is displayed together with the additional information as shown in an example of the screen image in FIG. When the user purchases this product, the discount or present shown in the additional information is applied. Subsequent operations are the first
The description is omitted because it is the same as that of the first embodiment.

As described above, in the merchandise sales system according to the present embodiment, since the weighting is performed based on the number of times of access by the user in the processing of the extraction unit 140, the use of the merchandise is more efficient than the first embodiment. Product information suitable for the user can be presented. For other functions and effects,
This is the same as the embodiment.

In the present embodiment, only the product information having the highest weight in the weighted product list generated by the extraction unit 140 is presented to the user, but a plurality of product information is presented. You may. In this case, it is preferable to preferentially present the one with the larger weight. Furthermore, in the present embodiment, the extraction based on the weight is performed by the fourth extraction unit 144.
Has been performed only for the product list generated by the above, but may be appropriately extracted based on the weight for each of the lists generated by the other extraction units 141 to 143.
This reduces the amount of each generated list, thereby improving the efficiency of the subsequent extraction processing.

Although the first and second embodiments of the present invention have been described above, the present invention is not limited to these embodiments. For example, in each of the above embodiments, the recommended product is presented to the user in the product sale using the network, but the content of the presentation information presented to the user does not matter. That is, any form may be used as long as it presents information belonging to a specific group from presentation information classified into a plurality of groups. For example,
The presentation information may be information related to the provision of a service in addition to the product information.

In each of the above embodiments, when the user purchases the product presented to the user, the settlement host 300 charges the brokerage fee to the product provider. However, the present invention is not limited to this. That is, there is no need to charge at all depending on the form of the service. In this case, the settlement host 300 is unnecessary. In addition, other items may be used as long as they can be obtained not as an intermediary fee but as compensation.

Further, in each of the above embodiments, the access history of each user for the product information is used to indicate the relevance between the user and the product information. However, the present invention is not limited to this. That is, any information may be used as long as the information indicates the relevance between the user and the presentation information. For example, information such as a purchase history of a product may be used.

Further, in each of the above embodiments, the number of accesses to the product information of each user is used as the weight used in the extraction, but the present invention is not limited to this. For example, the product or information may be weighted by setting evaluations such as likes and dislikes by the user in advance.
Alternatively, a list in which the products and the like that the user likes is picked up and held may be obtained from the user in advance, and weighting may be performed using the list.

[0063]

As described in detail above, according to the present invention,
When presenting information in a specific group from a large amount of presentation information to individual users, it is possible to present suitable information that seems to be more interesting and faster. As a result, information can be promptly presented to users in a service used by many users, and a great effect can be exhibited in a sales business and the like.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a product sales system according to a first embodiment.

FIG. 2 shows an example of a product information table.

FIG. 3 shows an example of an access history.

FIG. 4 is a diagram showing an example of an additional information table.

FIG. 5 is a flowchart for explaining the operation of the product sales system according to the first embodiment;

FIG. 6 is a diagram illustrating an example of a screen image displayed on a user terminal.

FIG. 7 is a diagram illustrating an example of a list generated by a first extracting unit;

FIG. 8 is a diagram illustrating an example of a list generated by a second extraction unit.

FIG. 9 is a diagram illustrating an example of an intermediate list generated by a third extracting unit;

FIG. 10 is a diagram showing an example of a list generated by a third extraction unit.

FIG. 11 is a diagram illustrating an example of a list generated by a fourth extraction unit;

FIG. 12 is a diagram illustrating an example of a screen image displayed on a user terminal.

FIG. 13 is a diagram showing an example of a screen image displayed on a user terminal.

FIG. 14 is a diagram showing an example of a screen image displayed on a user terminal.

FIG. 15 is a diagram illustrating an example of a list generated by a first extraction unit.

FIG. 16 is a diagram illustrating an example of a list generated by a second extraction unit.

FIG. 17 is a diagram illustrating an example of an intermediate list generated by a third extraction unit;

FIG. 18 is a diagram illustrating an example of a list generated by a third extraction unit.

FIG. 19 is a diagram illustrating an example of a list generated by a fourth extraction unit.

FIG. 20 is a diagram showing an example of a screen image displayed on a user terminal.

FIG. 21 is a diagram illustrating an example of a screen image displayed on a user terminal.

FIG. 22 is a diagram showing an example of a screen image displayed on a user terminal in a conventional product sales system.

FIG. 23 is a diagram showing an example of a screen image displayed on a user terminal in a conventional product sales system.

FIG. 24 is a diagram showing an example of a screen image displayed on a user terminal in a conventional product sales system.

FIG. 25 is a diagram showing an example of a screen image displayed on a user terminal in a conventional product sales system.

FIG. 26 is a conceptual diagram of collaborative filtering in a conventional product sales system.

FIG. 27 is a conceptual diagram illustrating an object of the present invention.

[Explanation of symbols]

100: Product sales host, 120: Database, 12
1: Product information table, 122: Access history, 123
... additional information table, 130 ... sales management unit, 140 ... extraction unit, 141 ... first extraction unit, 142 ... second extraction unit, 14
3: Third extraction unit, 144: Fourth extraction unit, 200: User terminal, 300: Payment host, 400: Product provider terminal

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G06F 17/60 324 G06F 17/60 324 326 326

Claims (11)

[Claims] An information presentation using a computer that stores a large number of presentation information classified into a plurality of groups in a storage unit and presents the presentation information stored in the storage unit to a user terminal via a network. In the method, related information indicating a relationship between each user and presentation information stored in the information storage means is stored in advance in the storage means, and the presentation of information belonging to a specific group to one user is performed by A first extraction step of extracting, as an extraction target, all groups of presentation information relevant to the user based on the relevant information stored in the storage unit, and a user having a relation to the extracted presentation information. A second extraction step in which all users are extracted as extraction targets, and users having relevance to presentation information belonging to the specific group are extracted from the extracted users. 3 extraction stage, fourth extracting one or more presentation information from the presentation information belonging to and the specific group has an association with the extracted user
And a step of presenting the extracted presentation information to a user. 2. A method for weighting the related information between a user and presentation information by a predetermined calculation formula, and setting a priority of extraction using the weight in each of the extracting steps. 2. The information presentation method according to claim 1, wherein extraction is performed based on the information. 3. The information presentation method according to claim 1, wherein the presentation information includes information on provision of a product or a service to a user. 4. The information presentation method according to claim 3, wherein additional information relating to provision of a product or service is presented to a user together with the presentation information. 5. The additional information according to claim 4, wherein the additional information includes information relating to discount information of a price for the product or service that is obtained by a user when the user purchases or contracts for the product or service. Information presentation method. 6. The information presentation method according to claim 4, wherein the additional information includes information relating to another product or service that can be obtained by a user when the user purchases or contracts for a product or service. 7. When a user purchases a product or service related to the presented information or makes a purchase contract in accordance with the presented presentation information, transmits the purchase information of the product or service to a provider of the product or service. The information presentation method according to any one of claims 3 to 6, wherein: 8. The information presentation method according to claim 7, wherein said additional information is transmitted to a product or service provider together with said purchase information. 9. The method according to claim 1, wherein when a user purchases or contracts for a product or service related to the presented information in accordance with the presented presentation information, a fee is charged to a product provider of the product or service. Item 9. The information presentation method according to any one of Items 3 to 8. 10. An information presentation host, comprising: storage means for storing a large number of presentation information classified into a plurality of groups; and presenting the presentation information stored in the storage means to a user terminal via a network. Means for storing in advance in the storage means related information indicating the relevance between each user and the presentation information stored in the information storage means, and a request for presenting information belonging to a specific group received from the user terminal. Means for presenting presentation information belonging to the specific group in accordance with the information. The information presenting means, based on the related information stored in the storage means, presents presentation information having relevance to the user to all groups. A first extraction unit for extracting as an extraction target, a second extraction unit for extracting all users as extraction targets for users associated with the extracted presentation information, Third extraction means for extracting a user having a relationship with the presentation information belonging to the specific group from the extracted users; An information presentation host, comprising: a fourth extraction unit that extracts one or more pieces of presentation information from among them; and a presentation unit that presents the extracted presentation information to a user. 11. The related information is weighted between a user and presentation information by a predetermined formula, and each of the extracting means sets an extraction priority using the weight, and 11. The information presentation host according to claim 10, wherein the extraction is performed based on the information.