JP2007233926A - Information processor and method, program, and recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To present contents so that a user can select more various contents. <P>SOLUTION: A first relay content decision part 41 decides first relay content among contents in a user selection group, a second relay content decision part 42 decides second relay content from a link destination of the first relay content, an end content decision part 43 decides end content from content belonging to a group to which the second relay content belongs and further decides a link path from the second relay content to the end content, and a start content decision part 44 sets start content on the basis of the first relay content, and a content list constructing part 45 makes a list along the link path from the start content to the end content. The invention is applicable to an information processor. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an information processing device and method, a program, and a recording medium, and in particular, an information processing device that allows a user to select more diverse content by recommending more effective content. The present invention relates to a method, a program, and a recording medium.

  Conventionally, in content providing services such as data distribution and product sales, if content selection (downloading or purchasing) is left to the user himself, there is a strong bias in the category of content to be selected according to the user's preference. As a result, the range of selection becomes narrow, and the user may get bored. As a result, the utilization rate may be reduced. Moreover, there is a possibility that the operation rate of the content is also lowered.

  Therefore, for example, there has been a method of recommending new contents to the user and guiding selection. However, even if any content is recommended without considering the user's preference, the possibility that the user can be guided is reduced.

  Therefore, for example, a past user's preference pattern is analyzed based on a user history (for example, an Internet user's site browsing history or a click history), and the current user's preference is estimated based on the analysis result. There are a method of recommending a product and information that the user is likely to like, and a method of using a method such as a recommendation using collaborative filtering that recommends a user's product or information with a similar behavior pattern.

  For example, out of two users who have scheduled recording of the same program, one user has scheduled recording simultaneously with that program, and the other user has not recorded another program, There is also an information processing apparatus that creates information that suits the user's preference, such as recommending, and provides information that matches the user's preference (see, for example, Patent Document 1).

By performing sales promotion activities using the analysis results in this way, it is possible to expect effects such as increased access and increased sales.
JP-A-2005-57713

  However, in the method using collaborative filtering as described above, if content of a different category is not derived from the analysis result, the range of content selection by the user is not widened and there is a possibility that the content is limited to a specific category. Conversely, in order to derive other categories of content from the analysis results, there must be many users who make such selections. That is, although it is possible to recommend content in a major category from a minor category, it is difficult to recommend content in a minor category from a major category.

  Also, in the method of Patent Document 1 described above, if the preferences of two users match or approximate, the categories are likely to be biased. Conversely, if the preferences of the two users do not match, the content is recommended. There is a possibility that the user who has been selected is not satisfied with the recommendation (does not select the recommended content).

  In addition, it is possible to make a recommendation based on a general trend or a recommendation from a specific authority. However, there is a high possibility that it does not match the user's preference, and the recommended content, the content selected by the user, Since the relevance is low, the motivation is weak, and there is a possibility that the user may not be satisfied with the recommendation (the recommended content is not selected).

  The present invention has been made in view of such a situation. For example, by selecting content to be logically recommended and showing the basis of the selection, the content can be recommended more effectively to the user. , To enable selection of more diverse content.

  One aspect of the present invention recommends a content to be selected by a user from a content group that is associated with feature information of the content itself as a link, and in which each content is divided and managed in groups by a predetermined method. An information processing apparatus, wherein a group determination unit that determines a reference group that serves as a reference for content recommendation based on a user's previous selection from a plurality of groups in a content group, and is determined by the group determination unit A content list creating means for creating a content list including information relating to contents belonging to the reference group and contents belonging to other groups than the reference group, and information relating to the content included in the content list created by the content list creating means are presented. content An information processing apparatus and a Display unit.

  The group determination means can determine a group including content selected by the user in the past as a reference group.

  The group determining means may determine a group including content currently selected by the user as a reference group.

  The content list creation means includes first relay content determination means for determining content having a link to content belonging to a reference group and belonging to another group as first relay content, and first relay belonging to another group The second relay content determining means for determining the content link destination content as the second relay content, the end content determining means for determining the content belonging to another group to which the second relay content belongs as the end content, and the user selected There may be provided start content determination means for determining the content belonging to the reference group and having the shortest link path length from the first relay content as the start content.

  The first relay content determination means determines the content having the largest number of links among the contents belonging to the reference group and having links to the contents belonging to other groups as the first relay content, and determines the second relay content The means determines the content having the largest number of links among the linked contents of the first relay content belonging to another group as the second relay content, and the end content determination means determines the other content to which the second relay content belongs. Of the contents belonging to the group, the content with the largest number of links can be determined as the end content.

  The first relay content determination means has a large influence on the link connection between other contents among the contents belonging to the reference group and having links to the contents belonging to other groups. Content having a large content mediation centrality value indicating the importance is determined as the first relay content, and the second relay content determination means includes a link destination content of the first relay content belonging to another group, The content having a large content mediation centrality value is determined as the second relay content, and the end content determination means terminates the content belonging to another group to which the second relay content belongs and the content mediativity centrality value is large It can be determined as content.

  The content presenting means can present information regarding all the contents included in the content list.

  The content presenting means can present a part of the information related to the content included in the content list.

  The content presenting means can present information related to the link together with information related to the content.

  The information processing apparatus further includes log creation means for creating log information related to content selection by the user, and the content list creation means can create a content list based on the log information created by the log creation means.

  It further comprises content information creation means for creating content information regarding each content of the content group to be recommended, and the content list creation means creates a content list based on the content information created by the content information creation means be able to.

  One aspect of the present invention recommends a content to be selected by a user from a content group that is associated with feature information of the content itself as a link, and in which each content is divided and managed in groups by a predetermined method. In the information processing method, a reference group serving as a reference for content recommendation based on a user's previous selection is determined from a plurality of groups in the content group, and content other than the determined reference group and the reference group This is an information processing method for executing a step of creating a content list including information regarding content belonging to another group and presenting information regarding content included in the generated content list.

  In a program that recommends content to be selected by a user from a content group that is associated with feature information of the content itself as a link and that is managed by dividing each content into groups by a predetermined method, a plurality of content groups From among these groups, a reference group serving as a reference for content recommendation based on the user's selection so far is determined, and information regarding content belonging to the determined reference group and content belonging to other groups other than the reference group is obtained. It is possible to cause the computer to execute a step of creating a content list including and presenting information regarding the content included in the created content list.

  It can be set as the recording medium with which the program of Claim 13 is recorded.

  In one aspect of the present invention, a reference group serving as a reference for content recommendation based on a user's previous selection is determined from a plurality of groups in the content group, and the content and the reference belonging to the determined reference group A content list including information regarding content belonging to a group other than the group is created, and information regarding content included in the created content list is presented.

  According to an aspect of the present invention, information can be processed. In particular, when recommending content or the like, by making a recommendation so that the user can select content in a new category more naturally, the user can select more diverse content. As a result, the service utilization rate can be improved and the content operation rate can be improved without getting bored of the user.

  Embodiments of the present invention will be described below. Correspondences between the configuration requirements of the present invention and the embodiments described in the detailed description of the present invention are exemplified as follows. This description is to confirm that the embodiments supporting the present invention are described in the detailed description of the invention. Accordingly, although there are embodiments that are described in the detailed description of the invention but are not described here as embodiments corresponding to the constituent elements of the present invention, It does not mean that the embodiment does not correspond to the configuration requirements. Conversely, even if an embodiment is described here as corresponding to a configuration requirement, that means that the embodiment does not correspond to a configuration requirement other than the configuration requirement. It's not something to do.

  Further, this description does not mean all the inventions described in this specification. In other words, this description is an invention described in the present specification and is not claimed in this application, that is, an invention that will be filed in the future or added by amendment. Is not to deny.

  According to one aspect of the present invention, feature information (for example, metadata 111 to metadata 116 in FIG. 3) of content itself is associated with each other as a link, and each content is managed by being divided into groups by a predetermined method. Contents (for example, content A1 to content A5, content B1 to content B6 in FIG. 2, and so on) selected by the user (for example, user 1 in FIG. 1) from the content group (for example, content information 22 in FIG. 2), An information processing device (for example, the content presentation device 10 in FIG. 1) that recommends the content C1 to the content C3), and a plurality of groups in the content group (for example, the group A, the group B, and the group C in FIG. 2). Based on the user's previous selection, it becomes the standard for content recommendation. Group determination means (for example, user selection group determination unit 31 in FIG. 1) for determining a reference group (for example, group A in FIG. 2), contents other than the content and the reference group belonging to the reference group determined by the group determination means Content list creation means (for example, content list creation means 32 in FIG. 1) for creating a content list including information related to content belonging to the group (for example, group B in FIG. 2), and content created by the content list creation means It is an information processing apparatus provided with content presentation means (for example, the content presentation processing unit 33 in FIG. 1) that presents information related to the content included in the list.

  The content list creation unit is a first relay content determination unit (for example, a content that belongs to a reference group and has a link to content belonging to another group (for example, content A4 in FIG. 2) as the first relay content (for example, The first relay content determination unit 41) of FIG. 1 and the second relay content that determines the link destination content (for example, content B2 of FIG. 2) belonging to another group as the second relay content. Ending content determining means (for example, the second relay content determining unit 42 in FIG. 1) and end content determining means (for example, content B6 in FIG. 2) belonging to another group to which the second relay content belongs (for example, content B6). For example, the end content determination unit 43) in FIG. Start content determination means (for example, start of FIG. 1) that determines content (for example, content A1 in FIG. 2) that belongs to a certain reference group and has the shortest link path length from the first relay content as the start content Content determination unit 44).

  The log creation unit (for example, the log creation unit 422 in FIG. 15) for creating log information (for example, the user log 21 in FIG. 1) related to the selection of the content by the user is further provided. A content list can be created based on the created log information.

  Content information creating means (for example, content management unit 523 in FIG. 16) for creating content information (for example, content information 22 in FIG. 1) regarding each content of the content group to be recommended is further provided, and content list creating means Can create a content list based on the content information created by the content information creating means.

  One aspect of the present invention recommends a content to be selected by a user from a content group that is associated with feature information of the content itself as a link, and in which each content is divided and managed in groups by a predetermined method. In the information processing method, a reference group serving as a reference for content recommendation based on a user's previous selection is determined from a plurality of groups in the content group (for example, step S1 in FIG. 5), and the determined reference is determined. A content list including information relating to content belonging to the group and content belonging to a group other than the reference group is created (for example, step S2 in FIG. 5), and information regarding the content included in the created content list is presented (for example, , Information for executing step S3) in FIG. A processing method (processing method comprising a control process of FIG. 5).

  Next, an embodiment to which the present invention is applied will be described with reference to the drawings.

  FIG. 1 is a block diagram showing a configuration example of a content presentation apparatus to which the present invention is applied.

  In FIG. 1, a content presentation device 10 is an information processing device used by a user 1 and is a device that recommends content to an operating user 1. The content presentation apparatus 10 has information on the user 1, selects a content to be recommended to the user 1 from a content group registered in advance based on the user information, and relates to the recommendation of the content. Information is presented to the user 1. At this time, the content presentation device 10 makes a recommendation so that the user can select a new category of content more naturally, as will be described later. That is, the content presentation device 10 can transition the user's interest to another group. By this presentation, the user 1 can expand the range of selection of products to be purchased, contents to be downloaded, etc., that is, can increase the types of categories.

  In addition, what kind of content may be sufficient as content, for example, goods, delivery data, a provision service, guidance information, etc. As will be described later, each content in the content group is managed in association with each other using its own feature information as a link.

  The content presentation device 10 includes a control unit 11, a user interface unit 12, a database interface unit 13, and a database 14.

  For example, when the control unit 11 acquires a request of the user 1 via the user interface 12, the control unit 11 selects a recommended content from the content group according to the request, and uses the information related to the selected content as recommendation information. It is presented to the user 1 via When selecting the recommended content, the control unit 11 performs selection based on the preference of the user 1 so that the user 1 can easily accept the recommendation. In addition, the control unit 11 adds content in a category other than the category selected by the user 1 or frequently selected by the user 1 (a category that is new or unusual for the user 1) so that the selection range of the user 1 is widened. Make a selection to recommend. Further, the control unit 11 also presents the basis for the recommendation by sequentially using the metadata included in the relay content together with the recommended content so that the user 1 can show an understanding of the recommendation method.

  The control unit 11 includes a user selection group determination unit 31, a content list creation unit 32, and a content presentation processing unit 33. The user selection group determination unit 31 determines a group to which the content selected by the user 1 belongs, or a user selection group that is the group most selected by the user 1. As will be described later, the contents to be recommended are grouped in predetermined units, for example, for each category. That is, each content in the content group is divided and managed in groups by a predetermined method. When recommending content, the control unit 11 selects a content to be recommended in consideration of this group, so that a category other than the category selected by the user 1 or frequently selected by the user 1 (for the user 1). New or unusual categories) can be recommended. The user selection group determination unit 31 determines a user selection group using information such as the user log 21 and the content information 22 recorded in the database 14.

  The content list creation unit 32 performs processing related to creation of a content list, such as selecting and listing a plurality of recommended content based on the user selection group determined by the user selection group determination unit 31. Although details of the content will be described later, one or more pieces of information indicating the characteristics of each content are added as metadata. Each content is managed by associating the same “information indicating the characteristics of the content” included in the metadata as a link (contents are linked by a link). The content list creation unit 32 searches for the content to be recommended along such a link, and creates a content list using the obtained content and information regarding the link between each content.

  The content list creation unit 32 includes a first relay content determination unit 41, a second relay content determination unit 42, an end content determination unit 43, a start content determination unit 44, and a content list construction unit 45.

  The first relay content determination unit 41 searches for a content having an external link and the largest number of links in the user selection group, and determines it as the first relay content. Details will be described later.

  The second relay content determination unit 42 searches for a content that is a link destination of the first relay content, belongs to a group other than the user selection group, and has the largest number of links among the link destinations, and searches for the second content. Determine as relay content. Details will be described later.

  The end content determination unit 43 searches for the content having the largest number of links in the group to which the second relay content belongs, and determines it as the end content. Furthermore, the end content determination unit 43 also determines a route (link route) from the second relay content to the end content. Details will be described later.

  The start content determination unit 44 sets the content closest to the first relay content (the link path length is the shortest) as the start content from the content group selected by the user so far or the currently selected content. To do.

  The content list construction unit 45 constructs a content list by listing the content group determined as described above from the start content to the end content along the link path.

  That is, the content list is a list of content groups on the link path from the start content to the end content via the first relay content and the second relay content. The first relay content is the last content included in the user selection group in the link route. The second relay content is content next to the first relay content on the link route.

  The content presentation processing unit 33 performs processing related to content presentation based on the content list created by the content list creation unit 32. For example, the content presentation processing unit 33 presents the created content list itself, that is, all the content to be recommended, information on the link, and the like to the user 1 in addition to the recommended content. Process to present. In this case, the user 1 can easily grasp the background and basis of the recommendation and can easily accept the recommendation. A plurality of contents can also be presented to the user 1. Further, for example, the content presentation processing unit 33 performs processing for presenting only the end content of the created content list to the user 1 as the content to be recommended most. In this case, the content presentation processing unit 33 can reduce the amount of information to be presented. As described above, the content presentation processing unit 33 causes the user 1 to present part or all of the content list through the user interface 12 based on the content list. The presentation method can be switched according to the situation.

  The user interface unit 12 is a processing unit that performs an interface process with respect to the user 1. For example, information related to content recommended by the input unit such as a keyboard or a mouse for the user 1 to input a request or the processing of the control unit 11. Are output to the user 1 as image information or audio information.

  The database interface unit 13 performs interface processing of the database 14 with respect to the control unit 11. For example, the database interface unit 13 acquires various data stored in the database 14 based on an instruction from the control unit 11 and supplies it to the request source.

  The database 14 is a storage unit configured by a recording medium such as a hard disk or a flash memory, for example, and includes user log 21 that is log information related to content selection by the user, and information related to recommended content that can be selected by the user. Various information such as certain content information 22 is stored. Thereby, the control part 11 can utilize various information, such as the user log 21 and the content information 42, at arbitrary timings.

  The user log 21 is log information relating to content selection of each past user. In other words, the user log 21 is also information indicating the preference of each user. For example, the user selection group determination unit 31 determines a user selection group that is a favorite group of the user 1 based on the user log 21. The content information 22 is information regarding each content that can be selected by the user.

  The operation of the content list creation unit 32 will be described with reference to FIGS. FIG. 2 is a diagram illustrating an example of the content information 22.

  In the example shown in FIG. 2, the content information 22 includes information on content A1 to content A5, content B1 to content B6, and content C1 to content C3.

  As shown in FIG. 3, one or more metadata is added to each content. In the case of the example of FIG. 3, “content A4” such as “active”, “forward-looking”, “bright”, “gentle”, “fresh”, and “brilliant” with respect to the content name 101 of “content A4”. Are added as metadata 111 to metadata 116. This metadata may be anything as long as it can be used to classify the content. For example, it is characteristic information of the content itself such as genre, producer, playback time, or data amount. There may be other information. Also, the number and type of metadata added to each content name is arbitrary, and may be different for each content.

  In the following, for simplification of description, it is assumed that a keyword indicating the feature of the content as shown in FIG. 3 is added to each content as metadata.

  Returning to FIG. 2, in the content information 22, content having such common metadata (content feature information) is linked as a link. That is, each content is managed in association with each other using the feature information of the content itself as a link. In FIG. 2, the link is indicated by a straight line connecting the contents, and the contents of the common metadata (content features) are indicated in parentheses.

  For example, both the content A1 and the content A4 have the keyword “forward” as metadata, and the content A1 is connected to the content A4 by this “forward” link.

  Similarly, the content A2 is connected to the content A3 by a link “Aggressive” and to the content A5 by a link “Stimulus”. The content A4 is further connected to the content A5 by the link “bright”, the content B1 by the link “gentle”, the content B2 by the link “fresh”, and the content C1 by the link “brilliant”. Yes. The content A5 is further connected to the content C1 by a link “sweet”.

  Further, the content B1 is further connected to the content B6 by a link “Shimijimi”. The content B2 is further connected to the content B3 by a link “condolence” and to the content B4 by a link “fashionable”. The content B4 is further connected to the content B6 by a “moist” link. The content B5 is further connected to the content B6 by a link “adult”.

  The content C1 is further connected to the content C2 by a link “beauty”. The content C2 is further connected to the content C3 by a link “beautiful”.

  Further, as shown in FIG. 2, each content is classified by a part or all of the above-described metadata, and common contents are grouped. That is, each content in the content group is divided and managed in groups by a predetermined method. In the case of the example in FIG. 2, the contents A1 to A5 all have the keyword “active” as metadata, and are grouped as “group A” by this keyword. Similarly, the contents B1 to B6 are grouped as “group B” by the keyword “calm”, and the contents C1 to C3 are grouped as “group C” by the keyword “beautiful”. .

  For such a content group, it is assumed that the content A1 to the content A3 are designated by the user log 21 as the user-selected content 91 that is content that the user 1 has selected so far. That is, it is assumed that the user log 21 includes log information indicating that the user 1 has previously selected (purchased or specified) the content A1 to the content A3.

  Based on such user log 21 and content information 22, the user selection group determination unit 31 in FIG. 1 determines a user selection group. In the case of the example in FIG. 2, the group A including the user selection content 91 is determined as the user selection group.

  When the user-selected content 91 is included in a plurality of groups, the user-selected group determination unit 31 includes, for example, a group including content with the largest number of accesses by the user 1, a group with the largest number of contents of the user-selected content 91, One optimal group is selected based on a predetermined criterion such as a group having the largest total number of accesses of the user-selected content 91. This criterion may be anything.

  When the user selection group is determined, the first relay content determination unit 41 of the content list creation unit 32 has an external link that is a link from the group (group A) to content other than the group A, and The content having the maximum number of links is searched, and the content is determined as the first relay content. In the example of FIG. 2, the content A4 has a link with the content B1, the content B2, or the content C1 as an external link, and the number of links (5) that the link has has an external link within the group A. Since it is the largest content, it is determined as the first relay content.

  When the first relay content is determined, the second relay content determination unit 42 selects the content having the maximum number of links from the external link destinations of the content A4 that is the first relay content. In the case of the example in FIG. 2, there are content B1, content B2, and content C1 as external link destinations, and among these, content B2 with the maximum number of links (three) is determined as the second relay content.

  In other words, the first relay content and the second relay content are used to make the recommended content group (category) transition more reliably and smoothly outside the user selection group in the content recommendation method following such a link. belongs to. In other words, the content presentation device 10 allows the content list creation unit 32 to determine the first relay content and the second relay content so that the user's interest is transferred to another category more reliably and smoothly. Can be recommended.

  When the second relay content is determined, the end content determination unit 43 searches the content group belonging to the group to which the second relay content belongs and searches for the content having the maximum number of links and selects it as the end content. The end content determination unit 43 further sets a link route so as to connect the second relay content to the end content in the shortest time. In the case of the example in FIG. 2, since the second relay content belongs to the group B, the end content determination unit 43 selects the content B6 having the maximum number of links (three) in the group B as the end content. Then, the end content determination unit 43 sets a link route that connects the content B2 that is the second relay content and the content B6 that is the end content via the content B4.

  In addition, the start content determination unit 44 searches for the content having the shortest link path length to the first relay content among the contents included in the user selection content 91 and determines it as the start content. The start content determination unit 44 further sets a link route so as to connect the start content to the first relay content in the shortest time. In the example of FIG. 2, the start content determination unit 44 determines the content A1 closest to the content A4 among the contents A1 to A3 as the start content. Then, the start content determination unit 44 sets a “forward-facing” link connecting the content A1 as the start content and the content A4 as the first relay content as a link route.

  As described above, the link path from the start content (content A1) to the end content (content B6) is completed. The content list construction unit 45 creates a content list by listing content groups existing on the link path. In the case of the example in FIG. 2, information on the content A1, the content A4, the content B2, the content B4, and the content B6, and information on the link that connects them are listed.

  The content presentation processing unit 33 presents the content list created as described above or information created from the content list to the user 1 via the input / output interface 12 as table data, image data, or the like.

  As described above, the content presentation device 10 presents the content on the link path as the recommended content to the user 1 and presents each link and content constituting the link path as the basis for the recommendation. In the example of FIG. 2, the content presentation device 10 presents content A4, content B2, content B4, and content B6 as recommended content, and constitutes a link path as a basis for the recommendation. A link, a “fresh” link, a “fashionable” link, a “moist” link, and content A4, content B2, and content B4 are presented.

  That is, the content presentation device 10 can make a recommendation using the user-selected content as the start content based on the preference of the user 1 so that the user 1 can easily accept the recommendation. In addition, the content presentation device 10 can make a recommendation that the content B6 of a group other than the user selection group is the end content so that the selection range of the user 1 is widened. Further, the content presentation device 10 also provides a basis for the recommendation using the meta information of the content on the link path together with the recommended content so that the user 1 can understand the recommendation method and easily accept the recommendation. Can be presented.

  That is, the content presentation apparatus 10 can make a recommendation to the user 1 to select a new category of content more naturally, and the range of selection of the user 1 can be expanded. Thereby, the content presentation apparatus 10 can improve the operation rate of each recommendation target content.

  FIG. 4 is a block diagram illustrating a detailed configuration example of the content list creation unit 32 of FIG.

  In FIG. 4, the first relay content determination unit 41 of the content list creation unit 32 searches for a content that is a candidate for the first relay content from the contents belonging to the user selection group, and the first relay content of the first relay content. A link number calculation unit 122 that calculates the number of links of each candidate and a content selection unit 123 that selects a candidate with the largest number of links as the first relay content.

  The candidate search unit 121 refers to the content information 22 and searches for content having an external link from content belonging to the user selection group, and sets it as a candidate for the first relay content. The link number calculation unit 122 refers to the content information 22 and calculates the number of links included in each content searched by the candidate search unit 121. Based on the calculation result by the link number calculation unit 123, the content selection unit 123 selects the content with the largest number of links as the first relay content.

  The second relay content determination unit 42 uses the link number calculation unit 131 that calculates the number of links of each content that is the external link destination of the first relay content, and the external link destination with the largest number of links as the second relay content. A content selection unit 132 to be selected is included.

  The link number calculation unit 131 refers to the content information 22 and calculates the number of links each content has as an external link destination of the first relay content. The content selection unit 132 selects the content with the largest number of links as the second relay content based on the calculation result by the link number calculation unit 131.

  The end content determination unit 43 includes a link number calculation unit 141 that calculates the number of links of each content belonging to the group to which the second relay content belongs, a content selection unit 142 that selects the end content, and from the second relay content to the end content. A link route setting unit 143 for setting the link route.

  The link number calculation unit 141 refers to the content information 22 and calculates the number of links included in each content belonging to the group to which the second relay content belongs. The content selection unit 142 selects the content with the largest number of links as the end content based on the calculation result by the link number calculation unit 141. The link route setting unit 143 sets a link route including content and links from the second relay content to the end content.

  Next, an example of the flow of each process executed by each unit will be described.

  First, an example of the flow of control processing will be described with reference to the flowchart of FIG.

  When the control process is started, in step S1, the user selection group determination unit 31 determines a user selection group. In step S2, the content list creation unit 32 creates a content list using the user selection group determined in step S1. In step S3, the content presentation processing unit 33 presents the recommended content and the basis for the recommendation to the user 1 based on the content list created in step S2, and ends the control process.

  Next, an example of the flow of content list creation processing executed in step S2 of FIG. 5 will be described with reference to the flowchart of FIG.

  When the content list creation process is started, in step S21, the first relay content determination unit 41 determines the first relay content from within the user selection group. In step S22, the second relay content determination unit 42 determines the second relay content from a group other than the user selection group. In step S23, the end content determination unit 43 determines the end content from the second relay content group. In step S24, the start content determination unit 44 determines the start content from within the user selection group based on the user log 21 and the first relay content. In step S25, the content list construction unit 45 constructs a content list on the path from the start content to the end content. When the content list is constructed, the content list creation unit 32 returns the processing to step S2 in FIG. 5 and causes the subsequent processing to be executed.

  Next, an example of the flow of the first relay content determination process executed in step S21 of FIG. 6 will be described with reference to the flowchart of FIG.

  When the first relay content determination process is started, in step S41, the candidate search unit 121 searches for content having an external link as a candidate for the first relay content. In step S42, the link number calculation unit 122 calculates the number of links of each candidate. In step S43, the content selection unit 123 selects the content with the largest number of links among the candidates as the first relay content. When the first relay content is selected, the first relay content determination unit 41 ends the first relay content determination process, returns the process to step S21 in FIG. 6, and executes the subsequent processes.

  Next, an example of the flow of the second relay content determination process executed in step S22 of FIG. 6 will be described with reference to the flowchart of FIG.

  When the second relay content determination process is started, in step S61, the link number calculation unit 131 calculates the number of links of the external link destination content of the first relay content. In step S62, the content selection unit 132 selects the content having the largest number of links among the content as the second relay content. When the second relay content is selected, the second relay content determination unit 42 ends the second relay content determination process, returns the process to step S22 in FIG. 6, and executes the subsequent processes.

  With reference to the flowchart of FIG. 9, an example of the flow of the end content determination process executed in step S23 of FIG. 6 will be described.

  When the end content determination process is started, in step S81, the link number calculation unit 141 calculates the number of links of each content in the second relay content group. In step S82, the content selection unit 142 selects the content having the largest number of links as the end content. In step S83, the link route setting unit 143 sets a link route from the second relay content to the end content. When the link route is set, the end content determination unit 43 ends the end content determination processing, returns the processing to step S23 in FIG. 6, and executes the subsequent processing.

  As described above, the content presentation apparatus 10 can make a recommendation so that the user can select content in a new category more naturally, and can cause the user to select more diverse content. Thereby, the content presentation apparatus 10 can improve the service utilization rate and improve the content operation rate without getting bored of the user.

  In the above description, it is assumed that the end content is the same content as the second relay content and the maximum number of links. However, the present invention is not limited to this, and the second relay content and the end content are groups other than the user selection group. As long as the content belongs to any group, the content may belong to different categories. In addition, the end content may be content having any feature. For example, the end content may be content having the highest degree of popularity in addition to the maximum number of links. Any of the linked content may be used, or any content having an external link may be used. Further, for example, the end content may be specified by a plurality of conditions, such as content having an external link and having the highest degree of popularity.

  Note that the content presentation apparatus 10 can control the feature of the recommended content according to the type of condition. For example, by using content with a large number of links as the end content as described above, the content presentation apparatus 10 can present more general content with much in common with other content to the user.

  Further, in the above description, the content presentation device 10 has been described as recommending content to the user 1 who is an operator, that is, recommending based on the log information of the user 1 itself. The ten operators and the content recommendation target do not need to match. For example, the user 1 who is an operator requests information on content to be recommended to another user, and the content presentation apparatus 10 provides the user 1 with recommended information targeted at another user in response to the request. You may make it show.

  Furthermore, in the above description, the first relay content, the second relay content, and the end content are determined based on the number of links. However, the present invention is not limited to this, and may be determined based on any condition. . For example, instead of the number of links, content mediation centrality indicating the degree of influence on other content may be used.

  The content mediation centrality will be specifically described. For example, in the content information 22 shown in FIG. 2, when the content mediation centrality of the content X connects two other arbitrary contents of the content X with the shortest path along the link, the shortest path is the content. This is a parameter indicating the size of the ratio passing through X. In other words, the content mediation centrality is a parameter indicating the degree of influence that the presence of the content has on the connection between other contents as an importance level.

  For example, in FIG. 2, even if the content A3 is deleted, the link between the contents other than the content A3 is not greatly affected. However, when the content A4 is deleted, each content of the group B and each of the groups A and C are deleted. The link with each content of is broken. In other words, when the content A4 is deleted, the influence of the content A1 is larger than that of the content A3, for example, the content of the group B is not recommended when the content A1 is set as the start content. In other words, in such content recommendation, it can be said that content with a larger content mediation centrality is more important content.

  As described above, the content mediation centrality is based on the importance of the influence of the existence of the content on the connection between other contents in the selection of the recommended content using the link of the content information as described above. Show. Note that the magnitude of the content mediation centrality varies depending on how links are linked between contents, and is not necessarily proportional to the number of links.

The content mediation centrality value will be described more specifically. The content-mediated centrality Ce (n _i ) of a predetermined node n _i is calculated by the following equation (1).

In Expression (1), n indicates the number of combinations of two nodes other than the target node n _i , and n _st is a node s and a node t that are two nodes other than the node n _i. The number of paths with the shortest path length (shortest path) is indicated by g _i ^(st) , and g _i ^(st) indicates the number of paths that pass through the node n _i out of n _st . However, the value s is smaller than the value t.

In other words, the node n _i content mediated centrality of Ce (n _i), of the shortest path between the nodes s and t, the ratio of the path through the node n _i, the combination of all the nodes s and t Average values are shown.

  For example, the content mediation centrality of the content A3 and the content A4 in FIG. 2 is compared.

  In FIG. 2, since there are 14 contents in total, n = 78 (street). In any combination, the shortest path is one by one. When considering the content A3, the shortest path between two nodes other than the content A3 does not pass through the content A3. Therefore, the content mediation centrality of the content A3 is Ce (A3) = 0. On the other hand, when considering the content A4, there are a total of 57 combinations of content whose shortest path passes through the content A4. Therefore, the content mediation centrality of the content A4 is Ce (A3) = 57/78 = 0.731. Therefore, the content A4 has a larger content mediation centrality than the content A3, and is a more important content in selecting the recommended content.

  FIG. 10 is a block diagram showing another configuration example of the content list creation unit 32 of FIG.

  In FIG. 10, the content list creation unit 232 determines the first relay content, the second relay content, and the end content using the content mediation centrality as described above. The content list creation unit 232 includes a first relay content determination unit 241, a second relay content 243, an end content determination unit 243, a start content determination unit 44, and a content list construction unit 45. That is, the content list creation unit 232 replaces the first relay content determination unit 41, the second relay content 43, and the end content determination unit 43 of the content list creation unit 32 with the first relay content determination unit 241, A second relay content 242 and an end content determination unit 243 are included.

  The first relay content determination unit 241 includes a candidate search unit 121, an intermediary centrality calculation unit 322, and a content selection unit 123. That is, the first relay content determination unit 241 has an intermediary centrality calculation unit 322 instead of the link number calculation unit 122 of the first relay content determination unit 41. The mediation centrality calculation unit 322 calculates Expression (1) for each candidate of the first relay content searched by the candidate search unit 121 to calculate the content mediation centrality. The content selection unit 123 compares the content mediation centrality of each candidate, and selects the content having the largest value as the first relay content.

  The second relay content determination unit 242 includes an intermediary centrality calculation unit 331 and a content selection unit 132. That is, the second relay content determination unit 242 includes an intermediary centrality calculation unit 331 instead of the link number calculation unit 131 of the second relay content determination unit 42. The mediation centrality calculation unit 331 calculates the content mediation centrality by calculating Expression (1) for each content of the external link destination of the first relay content. The content selection unit 132 compares the content mediation centrality of the content of each external link destination, and selects the content having the largest value as the second relay content.

  The end content determination unit 243 includes an intermediary centrality calculation unit 341, a content selection unit 142, and a link route setting unit 143. That is, the end content determination unit 243 has an intermediary centrality calculation unit 341 instead of the link number calculation unit 141 of the end content determination unit 43. The mediation centrality calculation unit 341 calculates Equation (1) for each content belonging to the group to which the second relay content belongs, and calculates the content mediation centrality. The content selection unit 142 compares the content mediation centralities of the calculated contents, and selects the content having the largest value as the end content. The link route setting unit 143 sets a route from the second relay content to the end content.

  As described above, in the content list creation unit 232, the content centrality calculation unit 322, the mediation centrality calculation unit 331, or the mediation centrality calculation unit 341 appropriately selects the content of each content as illustrated in FIG. Vector centrality is calculated.

  As described above, by using the content mediation centrality, the content presentation device 10 can present the user 1 with more important content in the content information 22 described above. As described above, content with a high content mediation centrality exists at a more important position in the content information 22, and transition from the content to more diverse content becomes possible. That is, the range of features of the recommended content when the content is used as the start content is widened, and there is a low risk of convergence to content of a specific category. Further, when the user 1 himself / herself derives other content by following the link from the content, the range of the feature of the content that is highly likely to be derived becomes wider. That is, the content presentation device 10 can use the content mediation centrality to broaden the range of content selection by the user 1.

  Next, an example of a specific flow of the above process will be described.

  With reference to the flowchart of FIG. 12, another example of the flow of the first relay content determination process executed in step S21 of FIG. 6 will be described.

  When the first relay content determination process is started, in step S101, the candidate search unit 121 searches for content having an external link as a candidate for the first relay content. In step S102, the mediation centrality calculation unit 322 calculates the mediation centrality of each candidate searched in step S101. In step S103, the content selection unit 123 selects the content having the highest mediation centrality calculated in step S102 among the candidates as the first relay content. When the first relay content is selected, the first relay content determination unit 241 ends the first relay content determination process, returns the process to step S21 in FIG. 6, and causes the subsequent processes to be executed.

  Next, another example of the flow of the second relay content determination process executed in step S22 of FIG. 6 will be described with reference to the flowchart of FIG.

  When the second relay content determination process is started, the mediation centrality calculation unit 331 calculates the mediation centrality of the external link destination content of the first relay content in step S121. In step S122, the content selection unit 132 selects, as the second relay content, the content having the highest mediation centrality among those contents. When the second relay content is selected, the second relay content determination unit 242 ends the second relay content determination process, returns the process to step S22 in FIG. 6, and executes the subsequent processes.

  With reference to the flowchart of FIG. 14, another example of the flow of the end content determination process executed in step S23 of FIG. 6 will be described.

  When the end content determination process is started, the mediation centrality calculation unit 341 calculates the mediation centrality of each content of the second relay content group in step S141. In step S142, the content selection unit 142 selects the content having the highest intermediary centrality among the content as the end content. In step S143, the link route setting unit 143 sets a link route from the second relay content to the end content. When the link route is set, the end content determination unit 243 ends the end content determination process, returns the process to step S23 in FIG. 6, and executes the subsequent processes.

  In the above, the content presentation device 10 has been described as being configured as a single device. However, the present invention is not limited to this. For example, vending machines such as goods and tickets, registers, video and audio streaming services and download services It may be configured as a part of various devices such as a terminal device that performs traffic information, a terminal device that provides traffic information and sightseeing guide information, a car navigation system, and a mobile phone. Further, a function equivalent to the content presentation device 10 may be realized by one or a plurality of devices. Furthermore, the content presentation apparatus 10 may be configured as a part or all of a network system that performs predetermined processing.

  FIG. 15 is a block diagram showing a configuration example of a network system to which the present invention is applied.

  15, the network system includes a content distribution server 411, a terminal device 412, and a terminal device 413 connected to the network 410.

  The content distribution server 411 is a server that distributes content to the terminal device 412 and the terminal device 413 via the network 410, and includes a distribution service processing unit 421 that performs processing related to content distribution, and log information of content distribution processing. A log creation unit 422 for creating a content, a sales promotion processing unit 423 for performing processing related to the promotion of sales (distribution) of content, a content presentation unit 424, a database interface unit 13, and a database 14.

  That is, the content distribution server 411 includes a distribution service processing unit 421, a log creation unit 422, and a sales promotion processing unit 423 instead of the user interface 12 of the content presentation device 10 in FIG. Note that the content presentation unit 424 corresponds to the control unit 11 of the content presentation device 10 and has the same configuration as the control unit 11 and performs the same processing, and thus detailed description thereof is omitted.

  The distribution service processing unit 421 is a processing unit that provides a content distribution service to the terminal device 412 and the terminal device 413 via the network 410 based on those requests. The distribution service processing unit 421 includes a distribution processing unit 431 that performs processing related to content distribution, a charging processing unit 432 that performs charging processing for the content distribution service, and a content storage unit 433 that stores content to be distributed. .

  In addition, the distribution service processing unit 421 supplies a request from the terminal device 412 or the terminal device 413 and information such as processing contents for the request to the log creating unit 422. Based on the information, the log creating unit 422 creates the user log 21 that is log information regarding the content distributed with the terminal device (or the user), and stores the user log 21 in the database 14. Content information 22 including information related to the content to be distributed is stored in the database 14 in advance.

  That is, the user log 21 of the database 14 is log information created or updated by the log creating unit 422 and includes an access history related to requests from the terminal device 412 and the terminal device 413 related to content distribution.

  That is, in the content distribution server 411, the user log 21 is updated by the log creation unit 422. Therefore, the content presentation unit 424 can create content recommendation information based on the latest log information 21 as described above.

  For example, the sales promotion processing unit 423 creates recommendation information of content distributed by the distribution service processing unit 421 and notifies the terminal device 412 and the terminal device 413 (their users) of the recommended information.

  For example, the terminal device 412 accesses the content distribution server 411 based on a user instruction, downloads content list information for designating content to be distributed, and presents it to the user. The user of the terminal device 412 selects and instructs content to be distributed from the list. Based on the request, the terminal device 412 requests the content distribution server 411 to distribute the selected content. The distribution service processing unit 421 performs distribution processing for the specified content based on the request. When such a terminal device 412 is accessed, the distribution service processing unit 421 supplies, for example, content recommendation information and content recommendation information supplied from the sales promotion processing unit 423 to the terminal device 412. Thereby, the terminal device 412 can present the recommended information together with the content list to the user.

  By doing in this way, the sales promotion process part 423 can perform more effective sales promotion activity so that a user can select a more various content with respect to a terminal device.

  Further, the content information 22 may be created or updated in the same manner as the user log 21.

  FIG. 16 is a block diagram showing another configuration example of the network system to which the present invention is applied.

  In FIG. 16, the network system includes a content transfer server 511, a terminal device 512, and a terminal device 513 connected to the network 510.

  The content transfer server 511 provides a service for temporarily storing content supplied from the terminal device 512 or the terminal device 513, or supplying the stored content to the terminal device 512 or the terminal device 513. It is a device to do. The content transfer server 511 includes a content acquisition unit 521 that acquires content supplied from the terminal device 512 and the terminal device 513, a content storage unit 522 that temporarily stores the supplied content, and content management according to content acquisition. The content management unit 523 that updates the content information 22 that is information, the content supply unit 524 that supplies content to the terminal device 512 or the terminal device 513, and log information related to access from the terminal device 512 or the terminal device 513 are created. A log creating unit 525, an information providing unit 526 that supplies content recommendation information stored in the content storage unit to the content supply unit 524, a content presentation unit 527 that creates content recommendation information, the database interface unit 13, and the database 14 It has.

  The user log 21 of the database 14 is log information created in the log creation unit 525, and includes an access history related to requests from the terminal device 512 and the terminal device 513 related to content supply. The content information 22 is information relating to the content stored in the content storage unit 522 and updated in the content management unit 523.

  That is, in the content transfer server 511, the user log 21 is updated by the log creation unit 525 and the content information 22 is also updated by the content management unit 523. The content presentation unit 527 can create content recommendation information based on the latest log information 21 and content information 22 as described above.

  The content supply unit 524 of the content transfer server 511 includes, for example, a content presentation unit together with content list information stored in the content storage unit 522 requested by the terminal device 512 or the terminal device 513 to select content to be downloaded. The recommendation information of the content created in 527 is provided. Thereby, the terminal device 512 and the terminal device 513 can present the recommended information to the user together with the content list.

  By doing in this way, the information provision part 526 can perform more effective information provision activity so that a user can select a more various content with respect to a terminal device.

  In the above, the formula for calculating the content mediation centrality has been described. However, the formula is merely an example, and the content mediation centrality may be calculated using formulas other than those described above. For example, content mediation centrality may be calculated in consideration of a weighting factor w based on an arbitrary index of each content. Any index may be used as an index of the weighting coefficient, for example, the selling price or popularity (reciprocal of popularity ranking) of content.

In that case, for example, the weighting factor of the node n _s and w _s, the weighting factor of the node n _t and w _t, content mediated centrality is, instead of formula (1), using the following equation (2) Calculated.

However, in Expression (2), as in Expression (1), n indicates the number of combinations of two nodes other than the target node n _i , and n _st is other than the node n _i . The number of paths with the shortest path length (shortest path) between the two nodes s and t is indicated, and g _i ^(st) is a path passing through the node n _i out of n _st The number of The value s is smaller than the value t. Furthermore, w _st indicates the sum of w _s and w _t .

That is, as shown in Expression (2), when determining the content mediation centrality Ce (n _i ), the content mediation centrality calculation unit 61 ^sets g _i ^(st) / n _st to the content weight coefficient. You may make it multiply with the parameter (weighting coefficient) _wst based.

  In the above description, content recommendation has been described. However, the content presentation device and the content presentation unit described above may select and present content from a target content group, and may be used for any purpose. May be.

  The series of processes described above can be executed by hardware or can be executed by software. In this case, for example, it may be configured as a personal computer as shown in FIG.

  In FIG. 17, a CPU (Central Processing Unit) 601 of the personal computer 600 performs various processes according to a program stored in a ROM (Read Only Memory) 602 or a program loaded from a storage unit 613 into a RAM (Random Access Memory) 603. Execute the process. The RAM 603 also appropriately stores data necessary for the CPU 601 to execute various processes.

  The CPU 601, ROM 602, and RAM 603 are connected to each other via a bus 604. An input / output interface 610 is also connected to the bus 604.

  The input / output interface 610 includes an input unit 611 including a keyboard and a mouse, a display including a CRT (Cathode Ray Tube) and an LCD (Liquid Crystal Display), an output unit 612 including a speaker, a hard disk, and the like. A communication unit 614 including a storage unit 613 and a modem is connected. The communication unit 614 performs communication processing via a network including the Internet.

  A drive 615 is connected to the input / output interface 610 as necessary, and a removable medium 621 such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory is appropriately mounted, and a computer program read from them is loaded. It is installed in the storage unit 613 as necessary.

  When the above-described series of processing is executed by software, a program constituting the software is installed from a network or a recording medium.

  For example, as shown in FIG. 17, the recording medium is distributed to distribute the program to the user separately from the apparatus main body, and includes a magnetic disk (including a flexible disk) on which the program is recorded, an optical disk ( Removable media 621 made of CD-ROM (compact disk-read only memory), DVD (digital versatile disk), magneto-optical disk (including MD (mini-disk) (registered trademark)), or semiconductor memory In addition to being configured, it is configured by a ROM 602 on which a program is recorded, a hard disk included in the storage unit 613, and the like that are distributed to the user in a state of being incorporated in the apparatus main body in advance.

  In the present specification, the step of describing the program recorded on the recording medium is not limited to the processing performed in chronological order according to the described order, but is not necessarily performed in chronological order. It also includes processes that are executed individually.

  Further, in this specification, the system represents the entire apparatus composed of a plurality of devices (apparatuses).

  In the above description, the configuration described as one device may be divided and configured as a plurality of devices. Conversely, the configurations described above as a plurality of devices may be combined into a single device. Of course, configurations other than those described above may be added to the configuration of each device. Furthermore, if the configuration and operation of the entire system are substantially the same, a part of the configuration of a certain device may be included in the configuration of another device. That is, the embodiment of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present invention.

  The present invention can be applied to an information processing apparatus.

It is a block diagram which shows the structural example of the content presentation apparatus to which this invention is applied. It is a figure which shows the example of content information. It is a figure which shows the detailed example of content information. It is a block diagram which shows the detailed structural example of the content list preparation part of FIG. It is a flowchart explaining the example of the flow of control processing. It is a flowchart explaining the example of the flow of a content list creation process. It is a flowchart explaining the example of the flow of a 1st relay content determination process. It is a flowchart explaining the example of the flow of a 2nd relay content determination process. It is a flowchart explaining the example of the flow of an end content determination process. It is a block diagram which shows the other structural example of the content list preparation part of FIG. It is a figure which shows the example of a content mediation centrality list. It is a flowchart explaining the other example of the flow of a 1st relay content determination process. It is a flowchart explaining the other example of the flow of a 2nd relay content determination process. It is a flowchart explaining the other example of the flow of an end content determination process. It is a block diagram which shows the structural example of the network system to which this invention is applied. It is a block diagram which shows the other structural example of the network system to which this invention is applied. It is a block diagram which shows the structural example of the personal computer to which this invention is applied.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 Content presentation apparatus, 11 Control part, 14 Database, 31 User selection group determination part, 32 Content list preparation part, 33 Content presentation processing part, 41 1st relay content determination part, 42 2nd relay content determination part, 43 End content Determination unit, 44 start content determination unit, 45 content list construction unit, 121 candidate search unit, 122 link number calculation unit, 123 content selection unit, 131 link number calculation unit, 132 content selection unit, 141 link number calculation unit, 142 content Selection unit, 143 link route setting unit, 232 content list creation unit, 241 first relay content determination unit, 242 second relay content determination unit, 243 end content determination unit, 322 intermediary centrality calculation unit, 331 Mediation centrality calculation unit, 341 Mediation centrality calculation unit, 411 Content distribution server, 421 Distribution service processing unit, 422 Log creation unit, 423 Sales promotion processing unit, 424 Content presentation unit, 511 Content transfer server, 521 Content acquisition unit , 522 content storage unit, 523 content management unit, 524 content supply unit, 525 log creation unit, 526 information provision unit, 527 content presentation unit

Claims (14)

An information processing apparatus that recommends content to be selected by a user from a content group that is associated with feature information of the content itself as a link, and in which each content is divided and managed in groups by a predetermined method,
A group determining means for determining a reference group serving as a reference for recommending the content based on the user's previous selection from the plurality of groups in the content group;
Content list creation means for creating a content list including information on content belonging to the reference group determined by the group determination means and content belonging to a group other than the reference group;
An information processing apparatus comprising: content presenting means for presenting information regarding the content included in the content list created by the content list creating means. The information processing apparatus according to claim 1, wherein the group determining unit determines a group including content selected by the user in the past as the reference group. The information processing apparatus according to claim 1, wherein the group determining unit determines a group including content currently selected by the user as the reference group. The content list creation means includes:
First relay content determination means for determining, as the first relay content, content having the link for content belonging to the reference group and belonging to the other group;
Second relay content determination means for determining, as second relay content, a link destination content of the first relay content belonging to the other group;
End content determining means for determining content belonging to the other group to which the second relay content belongs as end content;
The content of the said reference group which the said user has selected, Comprising: The start content determination means which determines the content with the shortest link path | route length from the said 1st relay content as start content. The information processing apparatus described. The first relay content determination means determines, as the first relay content, the content having the largest number of links among the contents having the link belonging to the reference group and belonging to the other group,
The second relay content determining means determines the content having the largest number of links among the linked contents of the first relay content belonging to the other group as the second relay content;
The information processing apparatus according to claim 4, wherein the end content determination unit determines a content having the largest number of links as the end content among the contents belonging to the other group to which the second relay content belongs. The first relay content determination means belongs to the reference group, and among the contents having the link to the contents belonging to the other group, the presence of the content affects the link between the other contents. Content having a large content mediation centrality value indicating the degree of influence as importance is determined as the first relay content,
The second relay content determination means determines, as the second relay content, content having a large value of the content mediation centrality among content linked to the first relay content belonging to the other group.
The information processing apparatus according to claim 4, wherein the end content determination unit determines, as the end content, content having a large content mediation centrality value among the contents belonging to the other group to which the second relay content belongs. The information processing apparatus according to claim 1, wherein the content presentation unit presents information regarding all content included in the content list. The information processing apparatus according to claim 1, wherein the content presentation unit presents a part of information regarding the content included in the content list. The information processing apparatus according to claim 1, wherein the content presentation unit presents information related to the link together with information related to the content. Log creation means for creating log information related to selection of the content by the user;
The information processing apparatus according to claim 1, wherein the content list creation unit creates the content list based on the log information created by the log creation unit. A content information creating means for creating content information related to each content of the content group to be recommended;
The information processing apparatus according to claim 1, wherein the content list creation unit creates the content list based on the content information created by the content information creation unit. In an information processing method for recommending content to be selected by a user from a content group in which characteristic information of the content itself is associated with each other as a link and each content is divided and managed in a predetermined unit,
Determining a reference group as a reference for recommending the content based on the user's previous selection from the plurality of groups in the content group;
Creating a content list including information relating to the determined content belonging to the reference group and content belonging to a group other than the reference group;
An information processing method for executing a step of presenting information relating to the content included in the created content list. In a program that recommends content to be selected by a user from a content group that is associated with feature information of the content itself as a link and that is managed by dividing each content into groups in a predetermined method.
Determining a reference group as a reference for recommending the content based on the user's previous selection from the plurality of groups in the content group;
Creating a content list including information relating to the determined content belonging to the reference group and content belonging to a group other than the reference group;
A program that causes a computer to execute a step of presenting information on the content included in the created content list.   A recording medium on which the program according to claim 13 is recorded.

Images