JP7323142B1 - Content selection apparatus and method - Google Patents

Abstract

[PROBLEMS] To improve the quality of a service that provides content when moving to a POI area by interpreting not only the POI but also the situation, and at the same time sufficiently secure opportunities to provide a wide variety of content. A content providing system (100) includes an input information interpretation unit (110), an environment information management unit (120), a content selection unit (130), a POI data set storage unit (140), a content output unit (150), and a content storage unit (160). be. The POI data set storage unit 140 stores POI data sets in a hierarchical structure graph. The content selection unit 130 selects the POI data set of the upper layer node selected using the POI in the hierarchical structure graph, or the POI data set of the lower layer node directly or indirectly connected to the upper layer node by an edge. Search the POI data set and determine one or more contents depending on the user's situation. [Selection drawing] Fig. 7

Description

The present invention relates to content selection technology for selecting optimal content for a user using location information.

For example, various services using information on POIs (Points of Interest) are in operation. A POI generally means a specific position on a map or in space, and services can be provided by associating various information and contents with this POI. A user (also referred to as a user) may be provided with a service using POIs in a mobile terminal or a vehicle navigation system.

By the way, there are a wide variety of contents linked to each POI, and it is possible to assign various contents to arbitrary POIs. Depending on the content, the user's experience value is superior or inferior.

For example, consider the following case.
(i) Service overview: A music playback service that provides music content to user terminals, and plays music suitable for POIs when entering a POI area while moving.
(ii) POI example: Located in an urban area, near the top of a hill with good visibility overlooking the entire city.
In such a case, the experience value will be completely different as follows.
(a) Examples of POIs, Situations, Provided Contents, and Excellent Experience Values On a sunny evening, when a husband and wife were driving for the first time and entered the POI for the first time, a relaxed duet song by a male and female vocalist was played. I got a romantic experience in a situation where the night view of the city spreads out in my field of view.
(b) Examples of situations or provided content where the experience value is not necessarily excellent or may impair the value, if the weather is rainy, or if the time is morning. , If the provided song is an exhilarating song If you have experienced the previous case in the past and the same content is provided again without a certain period of time

Although it is possible to increase the value of the quality of the content at the time it is provided in this way by adapting it to the situation as described above, the experience value of the service as a whole is sufficiently equipped with variations of content that are suitable for the situation. , it is desirable to secure the opportunity to provide

In a service that provides content when moving to a POI area, it is desirable to improve quality not only by POI but also by interpreting situations, and to secure opportunities to provide a wide variety of content at the same time.

Conventional methods have not been able to adequately address such issues. That is, FIG. 1 shows a conventional method in which each POI is provided with one piece of content and the content is provided without interpreting the situation. This POI data set describes the POI name, POI specific location information, and information of the assigned content. In this method, there is a problem that contents with contents suitable for the situation cannot always be provided. Alternatively, when entering the same POI, there is a problem of lack of variation in which the same content is always returned.

Also, FIG. 2 shows an example of a content providing system in which each POI is provided with a content pool (a plurality of contents). In this method as well, content is provided without interpreting situations. In this example, the POI data set assigned for each POI describes the POI name, POI specific location information, and information of the assigned content pool(s). In this example, if there was content that would impair the value of the experience due to a specific situation, there would be a problem that it would not be possible to provide content suitable for the situation (for example, if the topic was "cherry blossom season", (e.g., when the content includes songs that are not in bloom and the content is provided in autumn when the cherry blossoms are not in bloom). Also, although there is a method of providing only content that does not affect the experience value due to differences in situations, there is a problem that the variation of content cannot be expanded.

A method of interpreting the situation and selecting content that satisfies the conditions of the situation (see FIG. 3) is also conceivable. In this method, since each content is associated with each POI, it is expected to express the characteristics of the POI. It is necessary to prepare a lot of different contents, and as the number of POIs increases, the realization becomes more difficult.

As a patent document related to this invention, there is known a technology for recommending individualized content that recommends location-based services to users (Patent Document 1).

Japanese Patent Publication No. 2018-530022

In a service that provides contents when moving to a POI area, it is desirable to improve quality not only by POI but also by interpreting situations, and at the same time, sufficiently secure opportunities to provide a wide variety of contents.

It should be noted that the present invention should not be understood in a limited manner due to the problems described above, and the content thereof is defined in the claims and will be described in detail below using examples.

Here, before describing the invention in detail, the description of the scope of claims will be supplementarily described. It should be noted that although the reference numerals in the drawings are attached together for easy understanding, it should be noted that this does not mean that the configurations are limited to the embodiments.

According to one aspect of the present invention, in a content selection device that selects content using a hierarchical structure graph according to individual spatial areas and user situations, the hierarchical structure graph having an upper layer at the level of regions and one or more lower layers for each of one or more attribute themes, said upper layers having a plurality of nodes corresponding to said individual spatial regions; Each of the lower layers has at least one node according to the attribute value of the attribute theme, the lower layer node has at least one edge (also referred to as a link here) with respect to the upper node, and the The content selection device selects a user's It has content searching means for searching for one or more content depending on the situation.

According to this configuration, upper layer nodes are selected based on individual spatial regions, lower layer nodes connected thereto are selected, and POI data sets forming these nodes are used to variously select contents. can do.

In this arrangement, the spatial domain may be a geographic domain. POI data may be associated with the higher layer nodes. The content search means may preferentially select one or a plurality of contents specified by the search in the upper node. When a plurality of contents are selected by the content searching means, one content having the oldest reproduction time may be selected.

In this configuration, the attribute theme may be activity. Activity attribute values for the above attribute themes may include, but are not limited to, beach bathing, clam digging, field athletics, fishing, forest bathing, or their counterparts. The attribute theme may be an event. Attribute values for the above attribute-themed events may include, but are not limited to, marine fireworks displays, live music, flower festivals, beach volleyball openings, dance festivals, or their counterparts.

In this configuration, the hierarchical structure graph may be multiplexed.

According to another aspect of the present invention, there is provided a content selection device that selects content using a hierarchical structure graph according to individual spatial regions and user situations, wherein the hierarchical structure graph and one or more sublayers for each of one or more attribute themes, the upper layer having a plurality of nodes corresponding to the individual spatial regions. each of the lower layers has at least one node according to the attribute value of the attribute theme, and the content selection device selects the upper layer node selected using the hierarchical structure graph, or The node in the lower layer has content searching means for searching for one or more content depending on the user's situation.

According to this configuration, it is possible to select upper layer nodes and lower layer nodes based on individual spatial regions, and use the POI data sets forming these nodes to select various contents. .

According to still another aspect of the present invention, there is provided a content selection device that selects content using a hierarchical structure graph according to individual spatial regions and user situations, wherein the hierarchical structure graph It has an upper layer at the level of the individual spatial domain and one or more lower layers relating to attributes other than the individual spatial domain, the upper layer having a plurality of nodes according to the individual spatial domain. each of the lower layers has at least one node according to an attribute value of an attribute other than the individual spatial domain, and a node of the lower layer has at least one edge with respect to a node of the upper layer and the content selection device selects the upper layer node selected using the hierarchical structure graph or the lower layer node directly or indirectly connected to the upper layer node by an edge, It has content searching means for searching for one or more content depending on the user's situation.

According to this configuration, upper layer nodes are selected based on individual spatial regions, lower layer nodes connected thereto are selected, and POI data sets forming these nodes are used to variously select contents. can do.

The present invention can be implemented not only as an apparatus or system, but also as a method. Moreover, of course, a part of such an invention can be configured as software. Naturally, a software product (computer program) used to cause a computer to execute such software is also included in the technical scope of the present invention.

The above aspects and other aspects of the present invention are described in the claims and will be described in detail below using examples and the like.

According to this invention, in a service that provides content when moving to a POI area, quality can be improved by interpreting not only the POI but also the situation, and at the same time, opportunities to provide a wide variety of content can be sufficiently secured.

It is a figure explaining the content provision method using the conventional POI data structure. FIG. 10 is a diagram illustrating another example of a content providing method using a conventional POI data structure; FIG. 10 is a diagram illustrating an example in which content can be selected by adding situations to the conventional POI data structure; 1 is a schematic diagram showing a usage environment of a content providing system according to an embodiment of this invention; FIG. 1 is a schematic diagram of a hardware configuration of a content providing system according to an embodiment of this invention; FIG. 1 is a schematic diagram of a user terminal according to an embodiment of the present invention; FIG. 1 is a block diagram showing a content providing system according to an embodiment of this invention; FIG. It is a figure explaining the data hierarchical structure of the POI data set memory|storage part of the Example of this invention as a whole. FIG. 4 is a diagram for explaining part of the data hierarchical structure of the POI data set storage unit (the part layered by focusing on the attribute theme of the activity) in the embodiment of this invention; FIG. 4 is a diagram for explaining part of the data hierarchical structure of the POI data set storage unit (the part layered with attention paid to event attribute themes) in the embodiment of this invention; FIG. 4 is a diagram for explaining part of the data hierarchical structure of the POI data set storage unit (the part layered with attention paid to attribute themes of geographical features) in the embodiment of this invention; FIG. 8C is a diagram illustrating a specific example of the data hierarchical structure of FIGS. 8A to 8C; FIG. It is a figure explaining operation|movement of the Example of this invention. It is a figure explaining a part of operation|movement of the Example of this invention in detail. It is a figure explaining the operation example of the Example of this invention. FIG. 7 is a diagram illustrating another example of the data hierarchical structure of the POI data set storage unit according to the embodiment of this invention; 13 is a diagram illustrating a specific example of the data hierarchical structure of FIG. 12; FIG.

An embodiment in which the present invention is applied to a content providing system will be described below. This embodiment is characterized in that the POI data set is hierarchically described. Although multiple hierarchies are realized from the following three viewpoints, as will be described later, a simpler hierarchization may be adopted.

FIG. 4 explains the environment in which the content providing system 100 of this embodiment is used. In this figure, the content providing system 100 is connected to a communication network 300. As shown in FIG. A user terminal 200 is connected to this communication network 300 . Although only two user terminals 200 are shown, there are typically many. A user may use the user terminal 200 to obtain content from the content providing system 100 and view it. A user terminal may typically be a smart phone (a mobile phone with a mobile operating system) and may also be an in-vehicle navigation system. The provision of content may be distribution of music content (songs), but may also be provision/presentation of messages, presentation of products, provision/presentation of images and videos, and provision of services.

In this example, the following terms are defined as follows. However, the invention is not limited to the definition of this term.
"POI (Point Of Interest)": Each position in a service that provides content in association with a position, and has a range for uniquely identifying it.
"Situation": Unique factors surrounding the user and the user at the current location/time (people in the same place, user's mood, frequency of passing or staying in the place, etc.), and although irrelevant to individual users , the user's state determined by factors (location, weather, season, date and time, etc.) determined by the user's current location and time.
Specific examples of situations include, but are not limited to, the following.
[Purpose of travel] Picking up and dropping off children, commuting to work, shopping, day trips, returning home, dating...
(For example, obtained from registration information of applications that can be managed on the Internet such as Google (registered trademark) calendar, or set by the user)
[Road conditions] Dark roads, winding roads, narrow roads, traffic jams.
(For example, estimated from in-vehicle camera + map information, or set by user)
[Passenger information] One person, lover, couple, friend, colleague, family (infants), family (lower grades), family (middle and high school students), family (parents)...
(For example, judgment by face recognition of in-vehicle camera, or setting by user)
"POI data set": A data set unit in a hierarchical data structure, and has a link relationship between layers.
"POI Area": A range of locations within which individual POI objects are defined. It is expressed in two dimensions (plane) and three dimensions. For example, in the case of moving by car by driving, it means a range divided on a plane.

FIG. 5 schematically shows the implementation structure of the content providing system 100. A computer 1000 to be implemented has a CPU 1001, a main memory 1002, an input/output interface (input/output bus) 1003, an external regulation device 1004, and the like. and configured as good. The content providing system 100 is constructed by installing the application 1005 on the computer 1000 . Note that the content providing system 100 may be composed of a plurality of computer systems located at the same site or connected via a communication network.

FIG. 6 shows a configuration example of a user terminal (portable terminal) 200. In this figure, the user terminal 200 includes a processing system 210, a memory 220, an input/output subsystem 230, a high frequency circuit section 240, and an audio circuit section 250. include. Each of the components may be implemented in hardware, including signal processing integrated circuits, application specific integrated circuits, as appropriate, software, or a combination thereof. Processing system 210 includes processor 211 , memory controller 212 and peripheral device interface 213 . Memory 220 stores code and data executed by processor 211, including code and data for applications. Processor 211 executes various software components stored in memory 220 . The content providing system application of this embodiment is typically implemented as one of the applications 221 .

FIG. 7 shows a block diagram of the content providing system 100 of this embodiment. In this figure, the content providing system 100 includes an input information interpretation section 110, an environment information management section 120, a content selection section 130, a POI data set storage section. 140 , a content output unit 150 and a content storage unit 160 . The POI data set storage unit 140 stores POI data sets in a hierarchical structure graph (see FIGS. 8, 8A, 8B, 8C, and 12). A content selection unit (also referred to as a content search unit) 130 selects an upper layer node (POI data set) using a POI in the hierarchical structure graph, or directly or indirectly selects an edge (the (also referred to as links in the embodiments) are searched for lower layer nodes (POI datasets), and one or more contents are determined according to the user's situation. The content determination operation will be detailed later with reference to FIGS. 10A and 10B. The content output section 150 outputs the content selected by the content selection section 130 from the content storage section 160 to the user terminal 200 .

A hierarchical structure graph for storing a plurality of POI data sets in a hierarchical structure in the POI data set storage unit 140 typically consists of a plurality of first layer data uniquely identified by POIs, as shown in FIG. POI data set 1 (POI data sets 1-1, 1-2, . It is not limited to two layers, and may be one layer or three layers or more). POI data sets in the first layer contain POI identification information that uniquely identifies POIs, whereas POI data sets in lower layers do not contain POI identification information. However, since it is indirectly related to POIs by the edge to the POI data set of the first layer, it is called a POI data set like the POI data set of the first layer. In FIG. 8, POI datasets 2A (POI datasets 2A-1, 2A-2, . and POI data sets 3A of the third layer (POI data sets 3A-1, 3A-2, . . . 3A-n, (see FIG. 8A) is prepared. Similarly, regarding event attributes, the POI data set 2B of the second layer (POI data sets 2B-1, 2B-2, . . . 2B-n, see FIG. 8B) and the POI data set of the third layer 3B (POI data sets 3B-1, 3B-2, . . . 3B-n, see FIG. 8B) are prepared. Furthermore, regarding the attributes of the geographical features, the POI data set 2C of the second layer (POI data sets 2C-1, 2C-2, . . . 2C-n, see FIG. 8B) and the POI data set 3C of the third layer (POI data sets 3C-1, 3C-2, . . . 3C-n, see FIG. 8C) are prepared. Although multiple hierarchies are provided in this embodiment by activity attributes, event attributes, and geographic feature attributes, the hierarchies may be non-multiplexed. For example, only the attribute of the activity may be multiplexed, or a non-multiplexed hierarchical structure may be constructed by mixing attributes instead of multiplexing a plurality of attributes. Also, in the multiplexed hierarchical structure, different nodes may be connected by edges in lower nodes (POI data sets). Also, nodes on the same level of hierarchy may be connected by edges.

A collection of POI data sets (POI data space) handled by the content providing system 100 has two or more hierarchies. The POI data set of the highest hierarchy (referred to as the first hierarchy) has information for uniquely identifying POIs, and may have attribute information other than position information. POI data sets in the second and lower layers (second layer, third layer, . . . ) do not have information for uniquely identifying POIs.

The POI data set may include situation conditions that are conditions for outputting content. In the first hierarchy, the defined position itself becomes part of the conditions. Among the situation conditions, there is a condition that there is no output history of this content during a predetermined period of time in the past (this predetermined period is set as the output suppression period), and a condition that uses an index related to output frequency, such as an output ratio condition. may contain

Each POI data set is associated with output content (content pool) specific to this POI data set. A content pool consists of one or more pieces of content. Each content in the content pool can be associated with each situation condition. As a secondary feature of this data structure, the content pool in the first layer is content linked to individual POIs, so it has a feature of strong uniqueness.

Hierarchies above the lowest may have type information for linking with lower hierarchies. In other words, the layers below the second layer have a link relationship with the data set of the adjacent upper layer through their own type information. Hierarchical structures can be defined in various ways depending on the classification type (attribute theme). The link relationship between the adjacent POI data set in the upper layer and the POI data set in the lower layer does not need to be 1:1.

8A to 8C individually illustrate the data hierarchical structure (FIG. 8) of the POI data set storage unit 140 of FIG. 7, focusing on attributes. FIG. 8A shows a hierarchical structure part that is layered with focus on the attribute theme of the activity, and the first layer is the data set specified by the POI. In the second hierarchy, activities are themed and the subjects are divided into relatively small groups, and in the third hierarchy, the activities are themed and the subjects are divided into relatively large classes. In the example of FIG. 8A, the POI data set 1-1 associated with the POIs is the POI data set 2A-1 related to the activities of the relatively finely organized second hierarchy, and It is linked by a link (edge) to the activity POI data set 2A-4. In addition, the POI data set 2A-1 is linked to the POI data set 3A-1 related to relatively large grouping activities in the third hierarchy and to the POI data set 3A-2 related to relatively large grouping activities in the third level. are connected by Also, the POI data set 2A-4 is linked to the POI data set 3A-2 relating to relatively large activities in the third hierarchy. Thus, in FIG. 8A, the data set 1-1 in the first layer directly or indirectly includes the POI data set 2A-1, the POI data set 2A-4, the POI data set 3A-1, and the POI data set 3A- 2 are connected by a link. Note that the POI data set 1-1 may be linked with other POI data sets not shown. The same applies to other POI data sets in the first layer, other POI data sets in the second layer, and other POI data sets in the third layer. Note that the POI data set is nodes connected by links (edges).

Although the second and third tier POI datasets themselves are not directly identified by POIs, but are identified by activity attributes, they are directly or indirectly associated with the first tier POI datasets. linked by a unique link and treated as a POI data set. One POI data set of the second and third layers may be linked with a plurality of POI data sets of the first layer to have multiple POI information.

POI data sets 1-1, 2A-1, 3A-1, and 3A-2 marked with black circles in FIG. 8A correspond to specific description portions of the data structure described with reference to FIG. be.

FIG. 8B shows a hierarchical structure portion that is layered with attention paid to the attribute theme of the event, and the POI data set of the first layer is the POI data set of the first layer of FIG. 8A. In the example of FIG. 8B, the POI data set 1-1 associated with the POIs is the POI data set 2B-1 related to the event of the relatively finer division of the second hierarchy, and the POI data set 2B-1 related to the event of the relatively finer division of the second hierarchy. Linked to POI data set 2B-5 for activities. In addition, the POI data set 2B-1 is linked to the POI data set 3B-2 regarding relatively large grouping activities in the third layer and the POI data set 3B-3 regarding relatively large grouping activities in the third layer. are connected by Also, the POI data set 2B-5 is linked to the POI data set 3B-1 relating to relatively large activities in the third hierarchy. Thus, in FIG. 8B, the data set 1-1 in the first layer directly or indirectly includes the POI data set 2B-1, the POI data set 2B-5, the POI data set 3B-1, and the POI data set 3B-2. , and POI data set 3B-3 are connected by a link. It should be noted that links may also be connected in portions not shown in the figure.

FIG. 8C shows a hierarchical structure part layered by focusing on the attribute theme of geographical features, and the POI data set of the first layer is the same as the POI data set of the first layer in FIGS. 8A and 8B. . In the example of FIG. 8C, the POI data set 1-1 associated with the POIs is the POI data set 2C-1 relating to the geographic features of the relatively fine division of the second hierarchy, and the POI data set 2C-1 related to the geographic features of the relatively fine division of the second hierarchy. Linked to POI data set 2C-4 for chestnut geographic features. Also, the POI data set 2C-1 is linked to the POI data set 3C-2 relating to relatively large geographical features in the third hierarchy. Also, the POI data set 2C-4 is linked to the POI data set 3C-1 relating to relatively large geographical features in the third hierarchy. Thus, in FIG. 8C, the data set 1-1 of the first layer directly or indirectly includes the POI data set 2B-1, the POI data set 2B-5, the POI data set 3B-1, and the POI data set 3B-2. , and POI data set 3B-3 are connected by a link. It should be noted that links may also be connected in portions not shown in the figure.

Thus, as shown in FIGS. 8A-8C, POI data set 1-1 of the first layer includes, directly or indirectly, POI data set 2A-1, POI data set 2A-4, POI data set 3A-1. , and POI Data Set 3A-2; POI Data Set 2B-1, POI Data Set 2B-5, POI Data Set 3B-1, POI Data Set 3B-2, and POI Data Set 3B-3; and POI Data Set 2B-1, POI data set 2B-5, POI data set 3B-1, POI data set 3B-2, and POI data set 3B-3 are connected by links to form a multiple layered structure. .

Other POI data sets in the first layer similarly form a multiple layered structure.

With such a multiple layered structure, by specifying one POI data set of the first layer, it is possible to collectively specify a plurality of POI data sets layered by a large number of various attributes. A unique situation condition is provided for each identified POI data, and the situation condition is evaluated to determine whether to provide the content. A piece of content may be provided according to a predetermined condition if the situation condition is met for multiple POI datasets. For example, the higher the hierarchy, the higher the priority.

FIG. 9 shows an example implementation of the hierarchical structure shown in FIGS. 8A-8C. In FIG. 9, description is focused on activities, and details of events and geographical features (geo_feature) are omitted. The content selection unit 130 in FIG. 7 searches and determines the corresponding POI data set based on the description shown in FIG. 9, and further selects the POI data set and content according to the situation described in each POI data set. conduct.

10A and 10B show the operation of the content providing system 100 of the embodiment. In FIG. 10A, when the user terminal 200 enters a predetermined POI, the location information X1 and the user's context information X2 are sent to the content providing system. 100 to the input information interpretation unit 110 (S1). The user's context information is, for example, age, relationship with companion (single, friend, couple, etc.), favorite POI genre, and favorite content genre.

Next, the input information interpretation unit 110 receives the location information X1 and the user context information X2, and identifies the POI from the location information. Also, the position information X2 is transmitted to the environment information management unit 120 (S2).

Next, the environment information management section 120 outputs the environment information X4 based on the position information X1 sent from the input information interpretation section 110 (S3). The environment information X4 is, for example, time zone information, season information, weather information, etc. at this position.

Next, the input information interpretation section 110 creates situation information based on the user context information X2 and the environment information X4, and transmits it to the content selection section 130 together with the POI specification information X3 (S4).

Next, the content selection unit selects content from the POI information and the situation information (S5). That is, as shown in FIG. 10B, the POI data set of the first layer and all POI data sets linked to this POI data set are identified from the POI identification information (S51). Next, identify all POI datasets that match the situation information. That is, POI data set candidates are selected (S52). If multiple candidates are selected in S52, a POI data set is selected by a predetermined method (S53). The predetermined method may be, for example, a method of selecting the data set of the highest hierarchy among the candidates based on the criteria for creating the POI hierarchical data structure. This makes it possible to always select the most characteristic (low versatility) content that satisfies the situation conditions, and contributes to improving the quality of provided content. However, it is not limited to this. Furthermore, in S53, if a plurality of POI data sets remain (if the hierarchy is the same), a POI data set is selected by a predetermined method (S54). A predetermined method is, for example, to select the POI data set with the oldest last output time. This enables control in the direction of reducing the deterioration of the experience value due to the same experience in the past. After the POI data set is selected, the POI data set is selected by a specific method from the content pool associated with the data set (S55). A particular method is to select, for example, the POI data set with the oldest last output time, similar to S54.

Finally, the selected content is transmitted to the user terminal (S6, S7).

FIG. 11 shows an operation example (example of situation conditions) of the content providing system 100 of the embodiment, in which the POI data set 2A-1 of FIG. 1, 2A-4, 3A-1, and 3A-2 are exemplified. If the situation conditions are met and the priority is high, the relevant POI data set is selected and the relevant content is provided.

As an example of creation of layered data, in two layers or less, data in lower layers can have a structure in which links are aggregated by adopting a data structure with a higher degree of versatility. For example, the structure can have the following characteristics.
(i) The first layer consists of individual POIs and is highly unique.
(ii) The second layer generalizes the features of the POIs of the first layer in relatively small groups by focusing on predetermined attributes.
(iii) The third layer generalizes and classifies the features of the second layer in a relatively large grouping.

Creating such a data structure has the following features.
(i) When selecting one content for one POI, it may be possible to select from a plurality of POI data sets. Variation can be improved, and the quality of user experience value can be improved compared to the case of using a conventional content providing system.
(ii) Regarding the provided content linked to each POI data set in each layer, the content linked to the higher layer can be composed of highly unique content. (The content linked to the lower hierarchy can be composed of highly versatile content.). When such a configuration is applied, it is possible to control the frequency of providing content with high originality by setting the situation conditions more severely in higher layers. In addition, by providing a large number of variations of content with high versatility linked to the lower layers from the upper layers, even if the situation conditions of the lower layers are loose and the probability of being selected is higher than that of the upper layers, the same content experience can be experienced. You can prevent depreciation.

According to this embodiment, in a system for providing content suitable for POIs, the following effects can be obtained by constructing a POI data space having the proposed hierarchical structure and applying a data control method that takes advantage of its characteristics.
(i) By including situation conditions in the content selection conditions in each POI data set, it is possible to provide content that not only matches the POI but also matches various situations of the user.
(ii) By including a condition using an index that handles the output frequency in the situation condition, it is possible to avoid outputting the same POI at high frequency, and it is possible to prevent quality deterioration of the user experience value. .
(iii) Hierarchies above the bottom may have type information for linking with lower hierarchies. In other words, the layers below the second layer have a link relationship with the data set of the adjacent upper layer through their own type information. Hierarchical structures can be defined in various ways depending on the classification type (attribute theme).

In addition, in the above-described embodiment, a multiple layered structure is used, but a simply layered structure may be used. For example, it may be hierarchical only by activity attributes, hierarchical only by event attributes, or hierarchical only by geographical feature attributes.

Also, FIG. 12 shows a modification of the data structure. As shown in the example of FIG. 12, simplified hierarchization may be performed with various attributes. The hierarchical structure of FIG. 12 may be realized by the description example of FIG. In the example of FIG. 12, the second layer is classified by the activity attribute, and the third layer is classified by the geographical feature attribute. The number of hierarchies may also be two hierarchies, or four hierarchies or more. In addition, link coupling may be performed by skipping intermediate layers. For example, a link may be directly coupled from the first tier POI data set to the third tier POI data set. Also, although it has nothing to do with the POI, the data set of the lower hierarchy such as the second hierarchy may be directly selected. For example, in the example of FIG. 12, the POI data set 3-1 may be selected in relation to the POI, and the POI data set 3-1 may be directly selected regardless of the POI. In this case, the POI data set 3-1 may be directly selected regardless of the POI only when no content is selected in a higher layer related to the POI. Also, the POI data sets of the second layer may be connected by edges, the POI data sets of the third layer may be connected by edges, or the POI data sets of the same level may be connected.

In the layered data structure of FIG. 12, the lower layer data in the second layer and below can have a structure in which links are aggregated by adopting a data structure with a higher degree of versatility. The hierarchical data structure of FIG. 12 has the following features.
(i) The first layer consists of individual POIs and is highly unique.
(ii) In the second layer, the features of the POIs in the first layer are generalized (metadata) by converting them into general terms (sea bathing, fishing, clam digging, natural parks, man-made parks, etc.).
(iii) In the third layer, the characteristics of the second layer are converted into metadata (coasts, parks, etc.), further increasing versatility.

Creating such a data structure has the following features.
(i) When selecting one content for one POI, it may be possible to select from a plurality of POI data sets. Variation can be improved, and the quality of user experience value can be improved compared to the case of using a conventional content providing system.
(iii) Regarding the provided content linked to each POI data set in each layer, the content linked to the higher layer can be composed of highly original content (the content linked to the lower layer is more versatile). can be configured.). When such a configuration is applied, (a) by setting the situation conditions more severely in higher layers, it is possible to control the frequency of providing content with high originality. (b) By providing a large number of variations of content with high versatility linked to the lower hierarchy than the upper hierarchy, even if the situation conditions of the lower hierarchy are loose and the probability of being selected is higher than that of the upper hierarchy, the same content can be experienced. It is possible to prevent deterioration of experience value.

This completes the description of the embodiment.

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 invention.

100 content providing system 110 input information interpretation unit 120 environment information management unit 130 content selection unit 140 POI data set storage unit 150 content output unit 160 content storage unit 200 user terminal 300 communication network

Claims (14)

In a content selection device that selects content using a hierarchical structure graph according to individual spatial areas and user situations,
The hierarchical structure graph has an upper layer of the level of the individual spatial area and one or more lower layers for each of the one or more attribute themes, the upper layer being the individual space having a plurality of nodes according to regions, each of the sublayers having at least one node according to attribute values of the attribute theme;
the lower layer node has at least one edge to the upper node;
The content selection device is
In the upper layer node selected using the hierarchical structure graph or the lower layer node directly or indirectly connected to the upper layer node by an edge, 1 according to the user's situation Alternatively, a content selection device comprising content searching means for searching for a plurality of contents. 2. The content selection device of claim 1, wherein said spatial domain is a geographic domain. 3. The content selection device according to claim 2, wherein POI data is associated with the upper layer node. 2. The content selection device according to claim 1, wherein said content search means preferentially selects one or a plurality of contents specified by a search in a higher node. 5. The content selection device according to any one of claims 1 to 4, wherein, when a plurality of contents are selected by said content searching means, one content whose reproduction time is the oldest is selected. 2. The content selection device according to claim 1, wherein said attribute theme is activity. 7. The content selection device of claim 6, wherein the activity attribute values of the attribute theme include sea bathing, clam digging, field athletics, fishing, forest bathing, or their counterparts. 2. The content selection device according to claim 1, wherein said attribute theme is an event. 9. The content selection device of claim 8, wherein the attribute values of the attribute-themed events include marine fireworks, live music, flower festivals, beach volleyball openings, dance festivals, or their counterparts. 2. The content selection device according to claim 1, wherein said hierarchical structure graph is multiplexed. In a content selection device that selects content using a hierarchical structure graph according to individual spatial areas and user situations,
The hierarchical structure graph has an upper layer of the level of the individual spatial area and one or more lower layers for each of the one or more attribute themes, the upper layer being the individual space having a plurality of nodes according to regions, each of the sublayers having at least one node according to attribute values of the attribute theme;
The content selection device is
A content searching means for searching for one or a plurality of content according to a user's situation in the upper layer node or the lower layer node selected using the hierarchical structure graph. Content selection device. In a content selection method that selects content using a hierarchical structure graph according to individual spatial areas and user situations,
The hierarchical structure graph has an upper layer of the level of the individual spatial area and one or more lower layers for each of the one or more attribute themes, the upper layer being the individual space having a plurality of nodes according to regions, each of the sublayers having at least one node according to attribute values of the attribute theme;
the lower layer node has at least one edge to the upper node;
The above content selection method is
In the upper layer node selected using the hierarchical structure graph or the lower layer node directly or indirectly connected to the upper layer node by an edge, 1 according to the user's situation or a content searching step of searching for multiple pieces of content;
and selecting one content when a plurality of contents are identified in the content searching step. In a content selection computer program that selects content using a hierarchical structure graph according to individual spatial areas and user situations,
The hierarchical structure graph has an upper layer of the level of the individual spatial area and one or more lower layers for each of the one or more attribute themes, the upper layer being the individual space having a plurality of nodes according to regions, each of the sublayers having at least one node according to attribute values of the attribute theme;
the lower layer node has at least one edge to the upper node;
the computer,
In the upper layer node selected using the hierarchical structure graph or the lower layer node directly or indirectly connected to the upper layer node by an edge, 1 according to the user's situation or content searching means for searching a plurality of contents,
means for selecting one content when there are a plurality of contents specified by the content search means;
A content selection computer program used to be configured as a In a content selection device that selects content using a hierarchical structure graph according to individual spatial areas and user situations,
The hierarchical structure graph has an upper layer at the level of the individual spatial domain and one or more lower layers relating to attributes other than the individual spatial domain, wherein the upper layer is the individual spatial domain. each of the lower layers has at least one node according to an attribute value of an attribute other than the individual spatial region;
the lower layer node has at least one edge to the upper node;
The content selection device is
In the upper layer node selected using the hierarchical structure graph or the lower layer node directly or indirectly connected to the upper layer node by an edge, 1 according to the user's situation Alternatively, a content selection device comprising content searching means for searching for a plurality of contents.

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