JP4893694B2 - Information processing apparatus, information processing method, and program - Google Patents

Description

  The present invention relates to an information processing apparatus, an information processing method, and a program that provide content in response to a request from a content requester, and in particular, information processing that provides content based on a trust relationship between the content requester and the content provider. The present invention relates to an apparatus, an information processing method, and a program.

  Conventionally, social networking services (SNS) and the like have been provided at various sites in order to support the formation of social networks (human relationships). This type of content providing apparatus is used to mutually permit access to content owned by each other, such as a diary, because the two parties have a trusting relationship such as a friendship.

  An example of a conventional content providing apparatus is described in Patent Documents 1 to 3. The content providing apparatus described in Patent Literature 1 includes a profile information management table for each member, a friend management table, and a control unit. The conventional content providing apparatus having such a configuration operates as follows. That is, when the content management apparatus receives a profile disclosure request of member A from the browser terminal of member B, it can be disclosed based on the disclosure conditions set by member A and the relationship between member A and member B in member A's friend management table The profile information of the determined item is returned to the browser terminal that sent the profile disclosure request. With the above processing, the content providing apparatus can transmit content when there is a trust relationship of friendship between the content owner and the content requester.

  Also, Patent Document 2 describes an information sharing setting method in which an information sender is simply set to share information only with a specific range of persons based on his / her social network. ing. The information sharing setting method described in Patent Literature 2 includes a step of acquiring human relationship information between an authorized user and another user, a step of creating a sociogram based on the acquired human relationship information, and A step of outputting a setting page having a display part of the sociogram and a receiving part of each user's access right to the shared information to receive the access right from the authorized user, and the access right of each received user to the shared information The step of storing in association with the specific information, and determining whether or not the distribution is possible based on the access information associated with the specific information of the user who has accessed when the shared information is accessed and the specific information of the shared information The access right is set in the server that distributes the shared information on the condition that it is determined that the distribution is possible.

Patent Document 3 describes an access management system that accesses a database based on the access request when an access request to the database satisfies a predetermined access permission condition. In the access management system described in Patent Document 3, an access execution device that permits access to a database when an access request satisfies an access permission condition, and whether or not the access permission condition is satisfied for the access request The access execution device stores the determination result information including the determination result of the access permission condition, and the access request is issued when the determination result information has a predetermined inclusion relationship with the access request. Is determined to satisfy the access permission condition, and when the determination result information is determined not to have the inclusion relationship with respect to the access request, the determination result of the access permission condition for the access request is received from the policy determination device, If it is determined that the access request satisfies the access permission conditions, Allow access.
JP 2007-193611 A JP 2007-52557 A JP 2005-135062 A

  However, in the conventional apparatus or method described in Patent Documents 1 to 3, when the content owner discards the friend relationship (human relationship) with the content requester and stops providing the content, the content requester now The content owner who thought he was a friend will be unilaterally notified of the destruction of his friendship and will be denied access. For this reason, there is a problem of feeling uncomfortable or angry. The reason is that access control is performed depending on whether or not there is a friend relationship (human relationship), and therefore processing when the relationship is discarded by one side is not considered.

  The present invention has been made to solve such problems, and restricts access to content so as not to give discomfort to content requesters who have been allowed to provide content in the past. An information processing apparatus, an information processing method, and a program are provided.

  An information processing apparatus according to the present invention is an information processing apparatus that provides content in response to a request from a content requester, the trust relationship storage unit storing a trust relationship between the content requester and the content owner, and the trust A trust relationship check unit that checks a trust relationship between the content requester and the content owner with reference to a relationship storage unit, and determines whether or not the content reduction processing is necessary, and the trust relationship has been discarded And a content providing unit that excludes a part or all of the content generated after the timing when the trust relationship is discarded and provides the content requester.

  An information processing method according to the present invention is an information processing method that provides content in response to a request from a content requester, and refers to a trust relationship storage unit that stores a trust relationship between the content requester and the content owner. A trust relationship check step of checking a trust relationship between the content requester and the content owner and determining whether or not the content reduction processing is necessary; and if the trust relationship has been discarded, the trust relationship is discarded. A content providing step of providing a content requester by excluding some or all of the content generated after the generated timing.

  Further, the program according to the present invention causes a computer to execute an operation of providing content in response to the above-mentioned request from the content requester.

  According to the present invention, it is possible to provide an information processing apparatus, an information processing method, and a program for restricting access to content so as not to give discomfort to content requesters who have been permitted to provide the content in the past. Can do.

  Hereinafter, specific embodiments to which the present invention is applied will be described in detail with reference to the drawings. In this embodiment, the content requester who does not want to provide content is not denied access to the content, but the content generated after the timing when the trust relationship is discarded is excluded. Thus, the present invention is applied to a content providing apparatus provided to a content requester.

  FIG. 1 is a diagram showing a content distribution system according to the first embodiment of the present invention. As shown in FIG. 1, the content distribution system according to the present embodiment includes a content providing device 1 that provides content and a requester terminal device 2 that requests the provision of content. Note that the content providing apparatus 1 and the requester terminal apparatus 2 are connected via a communication network 4 such as the Internet, for example.

  The content providing apparatus 1 according to the present embodiment includes a trust relationship storage unit 12, a trust relationship check unit 13, and a content providing unit 16. The trust relationship storage unit 12 stores a trust relationship between the content requester and the content owner. The trust relationship check unit 13 refers to the trust relationship storage unit 12 to check the trust relationship between the content requester and the content owner, and determines whether or not content exclusion processing is necessary. When the trust relationship is discarded, the content providing unit 16 excludes part or all of the content generated after the timing when the trust relationship is discarded and provides the content requester.

  When the trust relationship between the content requester and the content provider is discarded, such a content providing apparatus 1 excludes the content generated after the timing when the trust relationship is discarded (set as the exclusion target content). By doing so, the content update amount decreases after the timing when the trust relationship is discarded. As a result, the content requester is less motivated to access the content provider, but the content created before the timing when the trust relationship is destroyed does not change, so the content requester can access the content provider more naturally. Can be reduced. In particular, by excluding all content created after the timing when the trust relationship is discarded and preventing the content from being updated at all, the content requester's willingness to access can be further reduced. Note that the timing at which the trust relationship is discarded may be determined using any of day, hour, minute, and second.

  Here, the content providing unit 16 can gradually exclude the content after the timing when the trust relationship is discarded as time passes. The exclusion target content is set such that the week when the trust relationship is discarded is 20% of the whole, the next week is 40% of the whole, and the next week is 60% of the whole. The content requester is less likely to notice a decrease in content because the content provided gradually decreases. Note that it may be gradually decreased over a longer period, or conversely, it may be decreased within a short period.

  When reducing the content, the content providing unit 16 may refer to the attribute information of the requester and set the content related to the attribute information as the content to be excluded, as will be described later. By actively reducing the content that the content requester is interested in, the content requester's willingness to access the content can be reduced. Similarly, referring to the access log of the content requester, the content providing unit 16 may set content related to the access log as an exclusion target content. Here, the access log of the content requester includes not only the content that the content requester wants to access but also an access log to other content. If information on what kind of content the content requester normally accesses is acquired, the content requester's high-interest content can be identified and actively excluded. In this case, in particular, based on the access log for the content provider of the content requester, the content related to the access log may be set as the content to be excluded. Based on the access log corresponding to the content provider, it is possible to more accurately identify the content that the content requester is interested in and set the exclusion target content.

  In addition, based on the content requester's access log to the content owner's content, the content requester determines what content the content requester has accessed, and the content requester accesses as a trigger when the trust relationship is destroyed The content may be provided by excluding some or all of the new content that has not been performed.

  For example, when the trust relationship is destroyed on February 20, 2007, not only a part or all of the content created after February 20, 2008 is excluded, but based on the content access log of the content requester. Thus, content that is not accessed by the content requester is excluded as part or all of the content created from February 11, 2008 to February 19, 2008. With such a process, it is possible to exclude more content that has not been accessed, and thus it is possible to reduce the access requests of content requesters without causing discomfort.

  Further, the content providing unit 16 can also exclude from content that provides content related to the created content based on the content created by the content requester. Content requesters also create their own blogs and diaries, which can identify what content they are most interested in from those information, and can actively exclude them.

  Furthermore, the content providing unit 16 can select the content to be excluded so that the ratio of the content by genre is the same before and after the trust relationship is discarded. If the ratio of content by genre is the same before and after the trust relationship is discarded, the possibility of noticing that content exclusion processing is being performed is reduced. The content genre includes baseball-related, soccer-related, and restoran information.

  More specifically, such a content providing apparatus 1 can be configured as follows. FIG. 2 is a diagram illustrating details of the content providing apparatus. As shown in FIG. 2, the content providing apparatus according to the present embodiment includes a request receiving unit 11 that receives a request for content, a trust relationship storage unit 12 that stores the trust relationship between the content owner and the content requester, Based on the attribute information, the trust relationship check unit 13 that checks the trust relationship between the owner and the content requester, the content storage unit 14 that stores the content, the attribute information storage unit 15 that stores the attribute information of the content requester, and the attribute information A content providing unit 16 that provides content and a log recording unit 17 that records an access log of the content requester are provided.

  The request reception unit 11 receives a content provision request from the requester terminal device 2 and transmits the content to the requester terminal device 2. The trust relationship storage unit 12 stores the trust relationship state between the content owner and the content requester as “no trust relationship”, “trust relationship exists”, or “trust relationship discarded”. Here, the trust relationship is an agreement that permits mutual access to content owned by two parties. The trust relationship check unit 13 checks whether the content requester is stored in the trust relationship storage unit 12. The log storage unit 17 stores identification information of the content requester, accessed content (for example, content address information), and accessed timing information in association with each other.

  The content storage unit 14 stores all content held by the content owner. The attribute information storage unit 15 stores the attribute information of the content requester. The content providing unit 16 acquires content requested by the content requester from the content storage unit 14. When the trust relationship between the content requester and the content owner is destroyed, the attribute of the content requester is acquired from the attribute information storage unit 15. Then, out of the content requested by the content requester, it is excluded from the content that provides the content related to the attribute of the requester, the unrelated content is extracted as the non-exclusion target content, and transmitted to the requester terminal device 2 .

  Here, the trust relationship storage unit 12 of the content providing apparatus 1 stores the timing (date and time) when the trust relationship is discarded. Thereby, the content provision part 16 can set the content produced | generated after the timing when the trust relationship was discarded to an exclusion object content. That is, of the content requested by the content requester, the content created after the timing when the trust relationship is discarded is the content related to the attribute information as the content to be excluded, and the remaining content is transmitted to the requester terminal device 2 can do. In this way, information that does not meet the hobby preference of the content requester can be extracted from the content created after the timing at which it is determined that content provision is not desired. Further, the content that can be viewed before the timing at which the trust relationship is discarded is provided to the content requester as it is. For this reason, the content requester is not made aware that the provided content is restricted.

  In addition, referring to the log storage unit 17, for example, the content (genre) accessed by the content requester within the past three months is determined as the content (genre) that the content requester is interested in, and the trust relationship is discarded. Among the contents after the set timing, the content of the genre may be set as the exclusion target content. In this case, an access log for the content provider may be used, or an access log for all content providers in the content providing site may be used. Further, not only the access log but also the content (genre) created by the content provider itself may be regarded as the content (genre) that the content provider is highly interested in, and the exclusion target content may be set.

  In addition, content that the content requester has not accessed within the past three months may be excluded from the provided content as non-provided content. Since the content requester does not access the content, the content requester does not notice even if the content is excluded from the provided content. Therefore, content to be provided can be reduced without causing discomfort to the content requester.

  Next, the operation of the first embodiment will be described in detail with reference to FIGS. FIG. 3 is a flowchart showing the content transmission method according to the first embodiment of the present invention. As illustrated in FIG. 3, the request reception unit 11 receives a content request and a requester identifier from the requester terminal device 2 (step S <b> 101). The content providing unit 16 acquires the content requested from the requester terminal device 2 from the content storage unit 14 (step S102). The trust relationship check unit 13 checks the trust relationship between the content owner and the content requester (steps S103 and S104). When there is no trust relationship between the content owner and the content requester, the request reception unit 11 transmits an error to the requester terminal device 2 (step S105).

  When there is a trust relationship between the content owner and the content requester, the request receiving unit 11 transmits the content requested by the content requester to the requester terminal device 2 (step S106). When the trust relationship between the content owner and the content requester has been destroyed, the content providing unit 16 acquires the attribute information of the content requester from the attribute information storage unit 15 (step S107), and from the content acquired in step S102, Content created after the trust relationship destruction timing and related to the attribute information is set as exclusion target content, and unrelated content is set as non-exclusion target content (step S108). The request reception unit 11 transmits the non-exclusion target content to the requester terminal device 2 (step S109).

  In the present embodiment, the content related to the attribute information is excluded only for the content created after the timing when the trust relationship is discarded. Therefore, the content requester does not feel that the content provided is less than before the trust relationship is destroyed. For this reason, when the content owner discards the trust relationship with the content requester, it can be made difficult to notice that the content requester has been destroyed.

  In addition, contents related to the attribute information of the content requester such as a hobby preference are removed from the content and provided to the content requester. For this reason, after the trust relationship is discarded, the acquired content becomes content that is not of interest to the content requester. Accordingly, when the content owner discards the trust relationship with the content requester, the content requester can be made not interested in the content of the content owner.

  Next, a second embodiment of the present invention will be described. FIG. 4 is a diagram showing a content providing apparatus according to the second embodiment of the present invention. As illustrated in FIG. 4, the content providing apparatus 3 according to the present embodiment includes a related term storage unit 38 that stores terms related to attribute information in addition to the configuration of the content providing apparatus 1. The related term storage unit 38 stores terms related to the contents of the attribute information stored in the attribute information storage unit 35.

  Then, when the trust relationship between the content owner and the content requester has been destroyed, the content providing unit 36 acquires the attribute information of the content requester from the attribute information storage unit 35, and further uses terms related to the attribute information. Obtained from the related term storage unit 38. Subsequently, in the content created after the trust relationship destruction date and time, the content related to the attribute information and related terms of the attribute information is excluded from the provided content. That is, for content created after the trust relationship destruction date and time, the content related to the attribute information and the related term is excluded content, and the unrelated content is transmitted to the requester terminal device 2 as non-excluded content. More content can be excluded by using not only attribute information but also terms related to attribute information to exclude content.

  Next, the operation of the second embodiment will be described in detail with reference to FIG. 4 and FIG. FIG. 5 is a flowchart showing a content apparatus method according to the second embodiment of the present invention. As shown in FIG. 5, the request receiving unit 11 receives a content request and a requester identifier from the requester terminal device 2 (step S201). The content providing unit 36 acquires the content requested from the requester terminal device 2 from the content storage unit 34 (step S202). The trust relationship check unit 33 checks the trust relationship between the content owner and the content requester (steps S203 and S204). When there is no trust relationship between the content owner and the content requester, the request reception unit 31 transmits an error to the requester terminal device 2 (step S205).

  When there is a trust relationship between the content owner and the content requester, the request receiving unit 31 transmits the content requested by the content requester to the requester terminal device 2 (step S206). When the trust relationship between the content owner and the content requester has been discarded, the content providing unit 36 acquires the attribute information of the content requester from the attribute information storage unit 35 (step S207). Next, the content providing unit 36 searches the related term storage unit 38 for a term related to the attribute information of the content requester, acquires the term (step S208), and relates to the attribute information and the attribute information from the content acquired in step S202. Content related to the term and created after the timing when the trust relationship is discarded is excluded, and excluded from the provided content (step S209). The request receiving unit 31 transmits the remaining content to the requester terminal device 2 (step S210).

  In this embodiment, when content is excluded, a large amount of content can be removed by using terms related to attribute information in addition to attribute information. For this reason, compared with the case where content is excluded based only on attribute information, it is possible to remove content more suited to the content requester's hobbies and preferences.

  The content providing apparatus as described above can be realized by a computer such as a dedicated computer or a personal computer (PC). However, the computer does not need to be physically single, and a plurality of computers may be used when performing distributed processing. As illustrated in FIG. 6, the computer 100 includes a CPU 101 (Central Processing Unit), a ROM 102 (Read Only Memory), and a RAM 103 (Random Access Memory), which are connected to each other via a bus 104. Although explanation of OS software for operating the computer is omitted, it is assumed that a computer for constructing the information processing apparatus is also provided.

  An input / output interface 105 is also connected to the bus 104. The input / output interface 105 includes, for example, an input unit 106 including a keyboard, a mouse, and a sensor, a display including a CRT and an LCD, an output unit 107 including a headphone and a speaker, a storage unit 108 including a hard disk, A communication unit 109 including a modem and a terminal adapter is connected.

  The CPU 101 executes various processes according to various programs stored in the ROM 102 or various programs loaded from the storage unit 108 to the RAM 103, in the present embodiment, a content provision process, a related term acquisition process, and the like. The RAM 103 also appropriately stores data necessary for the CPU 101 to execute various processes.

  For example, the communication unit 109 performs communication processing via the Internet (not shown), transmits data provided from the CPU 101, and outputs data received from a communication partner to the CPU 101, the RAM 103, and the storage unit 108. The storage unit 108 exchanges with the CPU 101 to save and erase information. The communication unit 109 also performs communication processing of analog signals or digital signals with other devices.

  The input / output interface 105 is also connected to a drive 110 as necessary. For example, a magnetic disk 111, an optical disk 112, a flexible disk 113, or a semiconductor memory 114 is appropriately mounted, and a computer program read from them is required. Is installed in the storage unit 108 according to the above.

  Next, the operation of the best mode for carrying out the present invention will be described using specific examples. In the present embodiment, as shown in FIG. 7, the content providing apparatus is applied to a service that provides a diary only to users who have a friendship in the SNS. In this embodiment, the SNS server 51 is connected to the client PC 53 via the network 52. The SNS server 51 includes a diary database (DB) 511, a user DB 512, and a friend DB 513. User A's diary is stored in the diary DB 511 of the SNS server 51, and the user B operates the client PC 53 to browse the user A's diary.

  First, the user B operates the client PC to search the user A's diary from the diary DB. Before sending the diary of the user A shown in FIG. 8 to the client PC, the SNS server checks the friend relationship of the user A who is the diary holder from the friend DB. When the friend relationship of the user A is FIG. 9, since the relationship of the user B has been discarded, the attribute information such as the user B's hobby preference as shown in FIG. 10 is acquired from the user DB. The SNS server 51 collates the contents of the diary with the attribute information of the user B, and since it is related to the contents of the diary on January 2, 2008 and the hobby of the user B, the diary of the January 2, 2008 is removed, 11 is transmitted to the client PC 53 operated by the user B.

  According to the present embodiment, it is possible to provide a content transmission service that permits access to content held by each other based on a mutual trust relationship between the two parties.

  It should be noted that the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.

  For example, in the above-described embodiment, the hardware configuration has been described. However, the present invention is not limited to this, and any processing can be realized by causing the CPU to execute a computer program. In this case, the computer program can be provided by being recorded on a recording medium, or can be provided by being transmitted via the Internet or another transmission medium.

It is a figure which shows the content delivery system which concerns on the 1st Embodiment of this invention. It is a figure which shows the detail of the content provision apparatus which concerns on the 1st Embodiment of this invention. It is a flowchart which shows the content transmission method concerning the 1st Embodiment of this invention. It is a figure which shows the content provision apparatus concerning the 2nd Embodiment of this invention. It is a flowchart which shows the content apparatus method concerning the 2nd Embodiment of this invention. It is a figure which shows an example of the hardware constitutions of the content provision apparatus concerning embodiment of this invention. It is a figure which shows the Example of this invention. In the Example of this invention, it is a figure which shows the diary of the user A. In the Example of this invention, it is a figure which shows the list of friend relations of the user A. FIG. In the Example of this invention, it is a figure which shows the attribute information of the user B. FIG. In the Example of this invention, it is a figure which shows the diary of the user A transmitted to client PC.

Explanation of symbols

2 Requester terminal device 3 Content providing device 4 Communication network 11, 31 Request accepting unit 12 Trust relationship storing unit 13, 33 Trust relationship checking unit 14, 34 Content storing unit 15, 35 Attribute information storing unit 16, 36 Content providing unit 17 , 37 Log storage unit 38 Related term storage unit 100 Computer 101 CPU
102 ROM
103 RAM
104 bus 105 input / output interface 106 input unit 107 output unit 108 storage unit 109 communication unit 111 magnetic disk 112 optical disk 113 flexible disk 114 semiconductor memory

Claims (24)

An information processing apparatus that provides content in response to a request from a content requester,
A trust relationship storage unit for storing a trust relationship between the content requester and the content owner;
A trust relationship check unit that checks the trust relationship between the content requester and the content owner with reference to the trust relationship storage unit, and determines whether or not the content reduction processing is necessary;
When the trust relationship has been destroyed, the amount of content generated after the trust relationship has been destroyed is increased based on an increase in time that has elapsed since the trust relationship was destroyed. An information processing apparatus comprising: a content providing unit that is excluded and provided to the content requester. An attribute information storage unit for storing the attribute information of the requester;
The content providing unit, wherein if the trust has been discarded, by referring to the attribute information storage unit, information of claim 1, wherein the excluded from the content providing content related to the attribute information Processing equipment. A log storage unit that records an access log of the content requester accessing the content holder's content;
The content providing unit, wherein if the trust has been discarded, by referring to the log storage unit, according to claim 1 or 2, wherein the excluded from the content providing content related to the access log Information processing device. The information processing apparatus according to claim 3 , wherein the content providing unit excludes content related to the access log based on an access log of the content requester with respect to the content provider. A log storage unit that records an access log of the content requester accessing the content holder's content;
The content providing unit refers to the log storage unit when the trust relationship is destroyed, and excludes the content providing unit from the content that provides a part or all of the content not accessed by the content requester. The information processing apparatus according to any one of claims 1 to 4 . The content providing unit, based on the content which the content requester created, processing of any one of claims 1 to 4, characterized in that excluded from the content providing content related to the created content apparatus. A related term storage unit that stores terms related to the attribute information stored in the attribute information storage unit;
The content providing unit refers to the related term storage unit, and excludes the content related to the attribute information of the requester and the related term of the attribute information from the content from the provided content. 2. The information processing apparatus according to 2 . The content providing unit, genre percentage of the content is, any one of claims 1 to 7, characterized in that the sorting exclude content to be the same before and after the trust relationship has been destroyed The information processing apparatus described. An information processing method in which an information processing device provides content in response to a request from a content requester,
The information processing apparatus checks a trust relationship between the content requester and the content owner with reference to a trust relationship storage unit that stores a trust relationship between the content requester and the content owner, and reduces the content Trust relationship check process to determine the necessity of
When the information processing apparatus has destroyed the trust relationship, the content generated after the timing at which the trust relationship is discarded is excluded based on an increase in the time elapsed since the trust relationship was discarded. And a content providing step of providing to the content requester by excluding the amount so as to increase . In the content providing step , the information processing apparatus refers to an attribute information storage unit that stores the attribute information of the requester and provides the content related to the attribute information when the trust relationship is destroyed The information processing method according to claim 9 , wherein the information processing method is excluded. In the content providing step , the information processing apparatus refers to a log storage unit that records an access log in which the content requester accesses the content of the content owner when the trust relationship has been destroyed, The information processing method according to claim 9 or 10, wherein content related to the access log is excluded from the content to be provided. The information processing apparatus, in the content providing process, based on the access log for the content provider of the content requester claim 1 1, wherein the excluded from the content providing content related to the access log The information processing method described. In the content providing step , the information processing apparatus refers to a log storage unit that records an access log in which the content requester accesses the content of the content owner when the trust relationship has been destroyed, an information processing method of the content requester access to have not any one of claims of some or claims 9 to 1 2, characterized in that excluded from the content providing all content. The information processing apparatus, in the content providing process, based on the content which the content requester created any of claims 9 to 1 2, characterized in that excluded from the content providing content related to the created content An information processing method according to claim 1. In the content providing step , the information processing apparatus refers to a related term storage unit that stores a term related to the attribute information stored in the attribute information storage unit, and includes the attribute information of the requester and the requester from the content the information processing method according to claim 1 0, wherein the content related to the relevant terms of the attribute information, wherein the excluded from the content of the offer. The information processing apparatus, in the content providing process, genre ratio of the content, the trust 9 through claim, characterized in that the sorting exclude content to be the same before and after discarded 15. The information processing method according to any one of items 15 . A program for causing a computer to execute an operation of providing content in response to a request from a content requester,
A trust relationship storage unit that stores a trust relationship between the content requester and the content owner is referred to, and a trust relationship between the content requester and the content owner is checked to determine whether the content reduction processing is necessary. A trust check process;
When the trust relationship has been destroyed, the amount of content generated after the trust relationship has been destroyed is increased based on an increase in time that has elapsed since the trust relationship was destroyed. A program that causes a computer to execute a content providing step that is excluded and provided to the content requester. In the content providing step, when the trust relationship has been destroyed , the computer refers to the attribute information storage unit that stores the attribute information of the requester and excludes the content from the content that provides the content related to the attribute information. The program according to claim 17 , wherein the program is executed . In the content providing step, if the trust relationship has been destroyed , the computer refers to the log storage unit that records the access log of the content requester and excludes the content from the content that provides the content related to the access log. The program according to claim 17 or 18 , wherein the program is executed . The computer according to claim 19, wherein, in the content providing step, the computer is configured to exclude content related to the access log from the content to be provided based on an access log of the content requester to the content provider. Program. In the content providing step, when the trust relationship has been destroyed, the content requester refers to a log storage unit that records an access log accessed by the content requester with respect to the content owner's content. It claims 1-7 to 2 0 set forth in any one program, characterized in that to execute from the content providing some or all of the content is not to be excluded to the computer. In the content providing process, based on said content by the content requester created, according to claim 1 7 or 2 0, characterized in that to execute that excluded from the content providing content related to the content creation in the computer The program according to any one of the above. In the content providing step, the related term storage unit that stores the term related to the attribute information stored in the attribute information storage unit is referred to, and the attribute information of the requester and the related term of the attribute information are referred to from the content. The program according to claim 18 , wherein the computer is caused to exclude related content from the provided content. In the content providing process, the proportion of genre of the content, according to claim 1 7, characterized in that to execute a computer to sort exclude content to be the same before and after the trust relationship has been destroyed or 2 3 any one of claims program.

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