JP7258960B2 - Information processing device, information processing method, and information processing program - Google Patents

Description

The present invention relates to an information processing device, an information processing method, and an information processing program.

Conventionally, various services using information about user's location have been provided. Therefore, it is desirable to collect information about the user's location. Therefore, for example, there is provided a technique for constructing an SNS (Social Networking Service) that requires disclosure of position information of posters.

JP 2019-79476 A

However, it may be difficult for the above conventional techniques to collect information about the user's location. For example, it is difficult to gather information about a user's location other than when posting. Therefore, it is desired to appropriately estimate the user's position using collected information about the user's position.

The present application has been made in view of the above, and an object thereof is to provide an information processing apparatus, an information processing method, and an information processing program for appropriately estimating a user's position.

An information processing apparatus according to the present application includes an acquisition unit that acquires history information that indicates a user's action history and message information that indicates a message between a plurality of users including the user in a messenger application; an estimating unit that estimates the position of the user at the time corresponding to the message based on the history information and the message information.

According to one aspect of the embodiment, it is possible to appropriately estimate the position of the user.

FIG. 1 is a diagram illustrating an example of information processing according to an embodiment. FIG. 2 is a diagram showing an example of a messenger application display. FIG. 3 is a diagram illustrating a configuration example of an information processing system according to the embodiment; FIG. 4 is a diagram illustrating a configuration example of an information processing apparatus according to the embodiment; 5 is a diagram illustrating an example of a user information storage unit according to the embodiment; FIG. 6 is a diagram illustrating an example of a message information storage unit according to the embodiment; FIG. 7 is a diagram illustrating an example of a position information storage unit according to the embodiment; FIG. 8 is a diagram illustrating an example of an estimated position information storage unit according to the embodiment; FIG. FIG. 9 is a flowchart illustrating an example of information processing according to the embodiment; FIG. 10 is a hardware configuration diagram showing an example of a computer that implements the functions of the information processing apparatus.

Hereinafter, modes for implementing an information processing apparatus, an information processing method, and an information processing program (hereinafter referred to as "embodiments") according to the present application will be described in detail with reference to the drawings. The information processing apparatus, information processing method, and information processing program according to the present application are not limited to this embodiment. Also, in each of the following embodiments, the same parts are denoted by the same reference numerals, and overlapping descriptions are omitted.

(embodiment)
[1. information processing]
An example of information processing according to the embodiment will be described with reference to FIGS. 1 to 3. FIG. FIG. 1 is a diagram illustrating an example of information processing according to an embodiment. FIG. 2 is a diagram showing an example of a messenger application display. FIG. 3 is a diagram illustrating a configuration example of an information processing system according to the embodiment; Below, in the information processing system 1, a case where a messenger service is provided via a messenger application (hereinafter also referred to as “messenger application”) installed in the terminal device 10 used by the user will be described as an example.

[1-1. Configuration of information processing system]
First, before describing an example of information processing, an example of the device configuration of the information processing system 1 will be described with reference to FIG. As shown in FIG. 3, the information processing system 1 includes a terminal device 10-1, a terminal device 10-2, a terminal device 10-3, a service providing device 20, and an information processing device 100. FIG. In the following description, the terminal devices 10-1 to 10-3 will be referred to as the terminal device 10 when they are not distinguished from each other. Each terminal device 10, the service providing device 20, and the information processing device 100 are connected via a predetermined network N so as to be communicable by wire or wirelessly. Note that the information processing system 1 shown in FIG. 3 may include a plurality of service providing apparatuses 20 and a plurality of information processing apparatuses 100 .

The terminal device 10 is an information processing device used by a user. The terminal device 10 is realized by, for example, a smart phone, a tablet terminal, a notebook PC (Personal Computer), a desktop PC, a mobile phone, a PDA (Personal Digital Assistant), or the like. FIG. 1 shows a case where the terminal device 10 is a smart phone.

The terminal device 10 displays various information. For example, the terminal device 10 displays various information regarding messenger applications. The terminal device 10 displays information related to the messenger application as shown in FIG. 2, the details of which will be described later.

The terminal device 10 receives various operations by the user. The terminal device 10 accepts input of a message to the messenger application by the user. The terminal device 10 provides the message input by the user to other terminal devices 10 . For example, the terminal device 10 transmits a message input by the user to the service providing device 20 , and the service providing device 20 transmits the message to the other terminal device 10 . When communication is performed between terminal devices 10 in a so-called P2P (Peer to Peer) mode, the terminal device 10 may directly transmit a message input by the user to another terminal device 10 .

In addition, the terminal device 10 transmits various information to the information processing device 100 . For example, the terminal device 10 transmits position information, action information, and the like to the information processing device 100 . For example, the terminal device 10 transmits position information, action information, and the like to the information processing device 100 at a predetermined timing.

Also, the terminal device 10 has a function such as a GPS (Global Positioning System) sensor, and detects and acquires user position information (sensor information). In addition, the terminal device 10 may acquire the location information of the base station with which it is communicating or the location information of the user by using radio waves of WiFi (registered trademark) (Wireless Fidelity). In addition, below, position information may be simply described as a "position."

Moreover, the terminal device 10 may detect various sensor information by various sensors other than a GPS sensor or the like. The terminal device 10 also has a function of an acceleration sensor, and detects and acquires acceleration information (sensor information) in movement of the user. Further, the terminal device 10 may have various functions such as a temperature sensor and an air pressure sensor, and may be capable of detecting and acquiring environment information such as temperature and air pressure in which the user is placed. In addition, the terminal device 10 may have various functions such as a heartbeat sensor, and may be capable of detecting and acquiring biological information of the user. For example, a user using the terminal device 10 may acquire the user's own context information from the terminal device 10 by wearing a wearable device capable of communicating with the terminal device 10 . For example, a user using the terminal device 10 wears a wristband-type wearable device that can communicate with the terminal device 10, so that the terminal device 10 acquires information about the user's own heartbeat (pulse). It may be possible.

In addition, below, the terminal device 10 may be described as a user. That is, hereinafter, the user can also be read as the terminal device 10 . Hereinafter, the user identified by the user ID "U1" may be referred to as "user U1". Thus, hereinafter, when "user U* (* is an arbitrary character string)" is described, it indicates that the user is identified by the user ID "U*". For example, when "user U2" is described, the user is identified by the user ID "U2". For example, the information processing system 1 shown in FIG. 3 includes many terminal devices 10 such as the terminal device 10 used by the user U1 and the terminal device 10 used by the user U2.

A terminal device 10-1 shown in FIG. 1 is an information processing device used by a user U1. The terminal device 10-2 shown in FIG. 1 is an information processing device used by the user U2. A terminal device 10-3 shown in FIG. 1 is an information processing device used by a user U3. The terminal device 10 accepts various operations by the user. Note that the terminal device 10 may be referred to as a user. That is, the user can also be read as the terminal device 10 .

The service providing device 20 is a computer used by a business that provides services related to communication between users via a network. The service providing device 20 provides a messenger service. The service providing device 20 provides a messenger service to the user via a messenger application installed in the terminal device 10 used by the user. For example, the messenger service here refers to various (modal) information such as text information, voice information, image information such as images or videos for various users including corporations and natural persons as messages between users It is a service that enables the exchange of A messenger service allows users to send and receive messages to each other. That is, the communication between users here includes sending a message from one user to another user and sending a message from another user to one user. For example, the messenger service may be a service such as LINE (registered trademark) or Kakao Talk (registered trademark).

The service providing device 20 transmits various information to the information processing device 100 . The service providing device 20 provides information collected by the messenger service to the information processing device 100 . The service providing device 20 provides the information processing device 100 with information on messages exchanged between users. For example, the service providing device 20 transmits information requested by the information processing device 100 to the information processing device 100 . It should be noted that the messenger service does not collect the location of the user.

Information processing apparatus 100 calculates a time corresponding to a message (hereinafter also referred to as “target time”) based on history information indicating a user's action history and message information indicating a message between multiple users including a user in a messenger application. ) to estimate the user's position. Note that the position estimated by the information processing apparatus 100 may be referred to as an “estimated position”. For example, when the position at the target time is not included in the user's position history, the information processing apparatus 100 estimates the user's position at the target time from the user's position at another time and the user's message. Further, for example, when the position at the target time is included in the user's position history, the information processing apparatus 100 estimates and narrows down the user's position at the target time from the user's position at another time and the user's message, Change (correct) the position of the user at the target time.

The information processing device 100 receives various types of information from the terminal device 10 . The information processing device 100 acquires user position information, behavior information, and the like from the terminal device 10 . For example, the information processing device 100 acquires the user's location information at a predetermined timing. For example, the information processing apparatus 100 acquires the user's location information at predetermined intervals (for example, every 10 minutes). In this case, for example, the terminal device 10 transmits positions at predetermined intervals to the information processing apparatus 100, and the information processing apparatus 100 collects a history of the user's positions at predetermined intervals (position history).

Note that the information processing apparatus 100 may provide a service by another application (hereinafter also referred to as "second application") different from the messenger application (hereinafter also referred to as "first application"). For example, the second application (also referred to as “second application”) may be an application that provides a service (content distribution service) that provides content such as articles and videos to users. For example, the information processing device 100 may collect the user's position via the second application. In this case, the terminal device 10 transmits information indicating the position to the information processing device 100 when transmitting information to the information processing device 100 . For example, the terminal device 10 transmits to the information processing device 100 the position at the timing when the user performed an operation or the like on the second application. The terminal device 10 transmits to the information processing device 100 the position at the timing of requesting the information from the information processing device 100 .

The information processing device 100 receives various information from the service providing device 20 . The information processing device 100 acquires information collected by the service providing device 20 from the service providing device 20 through the messenger service. The information processing device 100 acquires information about messages exchanged between users from the service providing device 20 . For example, the information processing device 100 requests information from the service providing device 20 and receives the requested information from the service providing device 20 . For example, the information processing apparatus 100 requests the service providing apparatus 20 for information regarding messages exchanged by a user whose position is to be estimated (also referred to as a “target user”), and transmits information regarding messages of the target user to the service providing apparatus 20. receive from

Note that the information processing device 100 may acquire information about the user's message from the terminal device 10 . Further, although FIG. 3 shows the case where the service providing device 20 that provides the messenger service and the information processing device 100 are separate entities, the information processing device 100 and the service providing device 20 may be integrated. . In this case, the information processing apparatus 100 provides a messenger service to the user.

[1-2. Information processing example]
From here, the example of information processing shown in FIG. 1 will be described. The example of FIG. 1 shows a case where user U1 is a target user and information processing apparatus 100 estimates the position of user U1 at the time of message transmission using user U1's message and user U1's position history.

In FIG. 1, information processing apparatus 100 estimates the position of user U1 based on messages exchanged between user U1 and other users in group GP1 in which user U1 participates. Group GP1 is a group chat in a messenger application, and three people, user U1, user U2, and user U3, participate in group GP1. Note that the group chat is a group of chats in which a plurality of users participate and interact, and since it is the same as a general group chat, a detailed description thereof will be omitted.

For example, user U1 uses a messenger application on terminal device 10-1 to exchange messages in group GP1. Further, the user U2 uses the messenger application using the terminal device 10-2 to exchange messages in the group GP1. Further, user U3 uses a messenger application using terminal device 10-3 to exchange messages in group GP1.

The map information MP1 shown in FIG. 1 schematically shows POIs (Points of Interest) such as stations ST and the positions of users and the like. In addition, in the map information MP1, only the position of the user U1 who is the target user is schematically shown, and the positions of the other users such as the users U2 and U3 are omitted. The information processing device 100 has information on POIs such as stations ST in the map information MP1. For example, POIs include various points of interest such as stores and stadiums. In addition, in the map information MP1, only the position LC12 of the station ST is schematically shown for POIs, and the positions of other POIs are omitted.

First, the situation from date dt11 to date dt21 shown in FIG. 1 will be described. First, user U1 is positioned (located) at location LC11 at date and time dt11.

After that, the user U1 sends a message (referred to as "message MS1"), which is a character string "I'll get on the train soon", to other users visiting the group GP1 on date and time dt12 using the messenger application. It is assumed that the position of user U1 at date and time dt12 has not been detected.

A message MS1 is sent from user U1 to other users U2 and U3 of group GP1 as destinations. For example, the terminal devices 10-2 and 10-3 receive the message MS1 transmitted from the terminal device 10-1. For example, the user U2 using the terminal device 10-2 displays the message MS1 on the terminal device 10-2 on which the messenger application is activated. Further, the user U3 using the terminal device 10-3 displays the message MS1 on the terminal device 10-3 on which the messenger application is activated.

Thereafter, user U2 sends a message (referred to as "message MS2") that is a character string "XXXX" to other users visiting group GP1 using a messenger application on date and time dt13. It is assumed that the position of user U1 at date and time dt13 has not been detected. Also, it is assumed that the user U2's message "XXXX" is a specific character string such as "understood" or "I'll be on board soon", for example.

Message MS2 is sent from user U2 to other users U1 and user U3 of group GP1 as destinations. For example, the terminal device 10-1 and the terminal device 10-3 receive the message MS1 transmitted from the terminal device 10-2. For example, user U1 using terminal device 10-1 displays message MS2 on terminal device 10-1 on which the messenger application is activated. Further, the user U3 using the terminal device 10-3 displays the message MS2 on the terminal device 10-3 on which the messenger application is activated.

Here, a display example of the messenger application will be described with reference to FIG. The terminal device 10 of FIG. 2 shows, as an example, the display on the terminal device 10-1 of the user U1 after the date and time dt13 when the message MS2 was sent. Specifically, the terminal device 10 in FIG. 2 shows an example of displaying message exchanges of a group GP1 in which three users U1 to U3 participate in chronological order. A message MS1 sent from the user U1 using the terminal device 10-1 to another user is arranged on the right side, and a message MS2 sent from a user U2 other than the user U1 to the user U1 is arranged and displayed on the left side. In the example of FIG. 2, as the message MS2 is indicated by the balloon from the icon indicating the user U2, information indicating from which user the message is from other users is displayed so that the message can be specified.

In addition, near the message MS1 of the user U1 (on the left side in FIG. 2), information indicating whether or not other users have viewed the message is arranged, and near the message MS2 of the user U2 (on the right side in FIG. 2) is the transmission time. Information indicating such as is arranged. It should be noted that the display of the exchange of messages in the group GP1 shown in FIG. 2 is the same as that of a general group chat, so detailed description will be omitted.

Then, user U1 is positioned (located) at position LC21 at date and time dt21 after date and time dt13.

From here, information processing in which the information processing apparatus 100 estimates the position of the user U1 who is the target user using the above-described information will be described. The information processing device 100 acquires information about the user U1 (step S11). The information processing apparatus 100 acquires information on the location history of the user U1 and the message of the user U1.

In FIG. 1 , information processing apparatus 100 stores information indicating that user U1 was located at position LC11 at date and time dt11 and located at position LC21 at date and time dt21 as the location history of user U1 (also referred to as “location history LG”). Get the information shown. For example, the information processing device 100 acquires the location history LG of the user U1 from the terminal device 10-1.

Further, in FIG. 1, the information processing apparatus 100 acquires information about messages exchanged in the group GP1 in which the user U1 participates as information about the messages of the user U1. For example, the information processing device 100 acquires information about the message of the user U1 from the service providing device 20 . Information processing apparatus 100 acquires information about message MS1 sent by user U1 on date and time dt12.

Here, the location history LG does not include the location of user U1 at date and time dt12 when message MS1 was sent. Therefore, the information processing apparatus 100 estimates the position of the user U1 at the date and time dt12 (step S12). Information processing apparatus 100 estimates the location of user U1 at date and time dt12 based on the content of message MS1 transmitted at date and time dt12 and the location history of user U1.

For example, the information processing apparatus 100 identifies (determines) the situation (context) of the user U1 at the date and time dt12 based on the character string "I will soon get on the train" of the message MS1. For example, the information processing apparatus 100 determines the content of the message MS1 by analyzing the character string "I'll get on the train soon" using various conventional techniques such as syntactic analysis. In this case, the information processing apparatus 100 identifies (determines) that the content of the message MS1 indicates that the user is in a position where he or she can immediately board the train. Accordingly, the information processing apparatus 100 estimates that the user U1 is located (located) at a station where the user U1 can immediately board a train at the date and time dt12.

The above is merely an example, and the information processing apparatus 100 may estimate that the user U1 is located at the station by what kind of processing. For example, the information processing apparatus 100 may extract keywords such as "soon" and "train", and estimate from the extracted keywords that the user U1 is located (located) at the station at date and time dt12.

Then, the information processing apparatus 100 estimates at which station the user U1 is located (located) using the position history LG of the user U1. For example, the information processing apparatus 100 estimates the station where the user U1 is located using the position LC11 of the date and time dt11 before the date and time dt12 in the location history LG of the user U1. For example, the information processing apparatus 100 estimates that the station where the user U1 is located is the nearest station from the position LC11. For example, the information processing apparatus 100 determines the nearest station from the position LC11 using information regarding POIs. In this case, the information processing apparatus 100 compares the distances between each station indicated by the POI-related information and the position LC11, and estimates that the user U1 on the date and time dt12 was positioned at the station with the shortest distance. In FIG. 1, the information processing apparatus 100 presumes that the user U1 on the date and time dt12 was located at the station ST. Accordingly, the information processing apparatus 100 estimates that the user U1 on the date and time dt12 is located at the position LC12 of the station ST.

As described above, the information processing apparatus 100 estimates the position of the user U1 at the date and time dt12 when the position is not included in the position history LG. That is, the information processing apparatus 100 estimates the position of the user U1 at the date and time dt12 between the date and time dt11 and the date and time dt21 whose positions are included in the position history LC. Thereby, the information processing apparatus 100 can appropriately estimate the position of the target user at the date and time when the position is not included in the position history of the target user. Therefore, the information processing apparatus 100 can appropriately estimate the user's position by using the user's position history and the information about the user's message. Conventionally, it has been desired to estimate the user's position and the time corresponding to that position in detail. For example, the information processing apparatus 100 estimates the time in detail based on the transmission time of the message or the time included in the message. Then, the information processing apparatus 100 details and estimates the position of the user corresponding to that time based on the content of the message. Therefore, the information processing apparatus 100 can perform both positional refinement and temporal refinement.

[1-3. Other examples]
Note that the position estimation by the information processing apparatus 100 described above is merely an example, and the information processing apparatus 100 may estimate the user's position through various processes. Regarding this point, some processing examples are described below.

For example, the information processing apparatus 100 has a position history of a predetermined area A (for example, Shimbashi, etc.) for the target user, and when the target user sends a message "tapioca delicious" to other users at date and time dt30, at date and time dt30 It may be estimated that the target user was located at a tapioca shop in area A.

For example, the information processing apparatus 100 stores tapioca pearls on the first floor of a shopping mall, and when the target user sends a message "Get delicious tapioca!" can be assumed to be at The information processing apparatus 100 may estimate the store type from the content of the target user's message, and estimate the target user's position based on the estimated store type.

Further, the information processing apparatus 100 may estimate the position of the user by using a time other than the transmission date and time of the message as the target time. For example, if the target user's message is "yesterday..." or the like, the information processing apparatus 100 may estimate where the target user went yesterday from yesterday's location history.

Further, when image information is included in the target user's message, the information processing apparatus 100 may estimate the position of the target user based on the result of the image analysis. For example, the information processing apparatus 100 may estimate the position of the target user using image information such as a photograph included in the message even if the target user's message does not include text information. For example, the information processing apparatus 100 may estimate the position of the target user from the shape of the building or the shape of the clouds using a photograph of the sky or building included in the target user's message. For example, the information processing apparatus 100 may find a relative positional relationship from a photograph included in the target user's message, and then perform name identification. In this way, the information processing apparatus 100 may analyze the photo included in the message to estimate the location.

In addition, the information processing apparatus 100 may estimate the position of the target user based on the target user's action pattern such as habitual behavior, positional information in the vicinity, or the like. For example, if the target user is at home on date and time dt31 and the message "The train is coming soon" is sent to date and time dt32 within a predetermined range from date and time dt31, the information processing apparatus 100 determines that the target user is at date and time dt32. You may presume that it was located at the station closest to your home.

Also, the information processing apparatus 100 may estimate the position of the target user based on a message from someone other than the target user. For example, in FIG. 1, the information processing apparatus 100 detects that the user U1 was located at the station STX at the date and time dt12 when "XXXX" of the message MS2 of the user U2 has a content such as "it seems that the user U1 has arrived at the station STX". can be estimated.

In this way, information processing apparatus 100 may estimate the position of user U1 based on the details of the exchanges between user U1, who is the target user, and user U2, who is another user, via the messenger application. good. That is, information processing apparatus 100 may estimate the position of user U1 based on a message transmitted from user U1 with user U2 as the destination and other messages that are user U2's responses to the message. good.

For example, on date and time dt40, the target user sends a message containing a picture of ramen and the character string "Maji Yabai!" The following describes the processing in the case of sending a message of "Isn't it?". In this case, the information processing apparatus 100 narrows down the location to the location of XX ramen (position LC41) based on the message "XX ramen is delicious" from users other than the target user. Then, the information processing apparatus 100 estimates that the target user's position is the XX ramen position LC41, since the target user has transmitted "right". Accordingly, the information processing apparatus 100 estimates that the position of the target user at the date and time dt40 is the position LC41.

In addition, when the target user responds with the message "Here you are" in response to another user's "Where are you?" device 10 may be provided. The information processing apparatus 100 may complement information and estimate the position of the target user from the log and attributes of the target user. For example, the information processing apparatus 100 responds to another user's "Where?" You may presume the position of the department store Z which is displayed as a target user's position.

The information processing apparatus 100 may estimate the position of the target user based on the target user's message, its transmission time, and its transmission destination. For example, when the target user's message is "I went to the aquarium in area B the day before yesterday," the information processing apparatus 100 changes (names) the target user's location history of the day before yesterday to the location of the aquarium in area B. good too. Note that the processing example described above is merely an example, and the information processing apparatus 100 may estimate the position of the user through various types of processing without being limited to the above.

[1-4. Position estimation of time included in position history]
Note that the information processing apparatus 100 may estimate the position at the time included in the position history. This point will be briefly described below.

For example, the information processing apparatus 100 may estimate the position of the target user at the time when the position is included in the position history of the target user (target time). In this case, the information processing apparatus 100 may change the position of the user at the target time in the position history based on the estimated position.

For example, in the example of FIG. 1, if the transmission time of the message MS1 is the date and time dt11, the information processing apparatus 100 may change the location LC11 of the date and time dt11 in the location history LG of the user U1 to the location LC12.

Note that the change in the position history described above is merely an example, and the information processing apparatus 100 may change the position in the position history in various manners. For example, the information processing apparatus 100 may detail the user's position at the target time in the position history with a message. For example, the information processing apparatus 100 may narrow down the first position of the target time included in the history information to a second position that is more detailed than the first position based on the content of the message.

When the first position at the target time indicated by the history information has a predetermined range, the information processing apparatus 100 may narrow down to a second position narrower than the range of the first position based on the content of the message. For example, when the content of the message transmitted by the target user at the target time indicates that the target user is located at a specific position (second position) within the first position, the information processing apparatus 100 may determine whether the target user at the target time The first position may be narrowed down to the second position. For example, if the first location is a shopping mall X and the second location is a store Y in the shopping mall X, the information processing device 100 changes the location at the target time in the location history from the first location to the second location. Change to position. In this way, the information processing apparatus 100 updates the information based on the estimation result for the combination of position and time in the position history that has already been acquired. can be realized.

[1-5. Service using estimated location]
Note that the information processing apparatus 100 may provide various services using information regarding the estimated position estimated by the above-described processing. For example, the information processing device 100 may provide information regarding the estimated location of the user. For example, the information processing apparatus 100 may provide information indicating the estimated position as the user's position at the target time to a service provider that does not have position information of the user at the target time of the estimated position. For example, the information processing device 100 transmits information indicating the estimated position to an external device used by the service provider.

Further, the information processing apparatus 100 may add the target user's estimated position to the target user's position history, and provide a complementary position history in which the position at a time not included in the position history is complemented with the estimated position. For example, the information processing apparatus 100 may transmit the complementary position history of the target user to an external device used by a service provider that provides the target user with a service using position information. In FIG. 1, information processing apparatus 100 adds the estimated position of user U1 at date and time dt12 to the position history LG of user U1, and adds the position of user U1 at date and time dt12 that was not included in the position history LG to the estimated position. A complemented position history LG2 complemented with may be generated. Then, the information processing apparatus 100 may transmit the generated complementary location history LG2 of the user U1 to an external device used by a service provider who provides the user U1 with a service using location information.

Further, the information processing apparatus 100 may perform notification according to the detailed position based on the above-described message. For example, the information processing apparatus 100 may make a notification according to a detailed position based on the message described above. When the position is detailed, the information processing apparatus 100 may notify a service provider that provides a service using the user's position information to update the user's position to the detailed position. For example, the information processing device 100 transmits information indicating detailed positions to an external device used by a service provider.

[2. Configuration of Information Processing Device]
Next, the configuration of the information processing apparatus 100 according to the embodiment will be described using FIG. FIG. 4 is a diagram illustrating a configuration example of an information processing apparatus according to the embodiment; As shown in FIG. 4, the information processing apparatus 100 has a communication section 110, a storage section 120, and a control section . The information processing apparatus 100 includes an input unit (for example, a keyboard, a mouse, etc.) that receives various operations from an administrator of the information processing apparatus 100, and a display unit (for example, a liquid crystal display, etc.) for displaying various information. may have.

(Communication unit 110)
The communication unit 110 is realized by, for example, a NIC (Network Interface Card) or the like. The communication unit 110 is connected to a network (for example, network N in FIG. 3) by wire or wirelessly, and transmits and receives information to and from the terminal device 10 .

(storage unit 120)
The storage unit 120 is realized by, for example, a semiconductor memory device such as a RAM (Random Access Memory) or a flash memory, or a storage device such as a hard disk or an optical disk. The storage unit 120 according to the embodiment has a user information storage unit 121, a message information storage unit 122, a position information storage unit 123, and an estimated position information storage unit 124, as shown in FIG. Note that the storage unit 120 stores various information other than the above. For example, the storage unit 120 includes a POI information storage unit that stores the facility name of each POI such as a store or station, the location of the facility, the area, and the like. The POI information storage unit stores various types of information such as the category of each POI in association with information for identifying each POI (POI ID, etc.).

(User information storage unit 121)
The user information storage unit 121 according to the embodiment stores various information about users. For example, the user information storage unit 121 stores various types of information regarding user attributes and various types of information regarding user behavior. 5 is a diagram illustrating an example of a user information storage unit according to the embodiment; FIG. The user information storage unit 121 shown in FIG. 5 includes items such as "user ID", "age", "sex", "home", "place of work", and "interest".

"User ID" indicates identification information for identifying a user. "Age" indicates the age of the user identified by the user ID. Note that the “age” may be a specific age of the user identified by the user ID, such as 35 years old. "Gender" indicates the gender of the user identified by the user ID.

"Home" indicates location information of the home of the user identified by the user ID. In the example shown in FIG. 5, "home" is illustrated as an abstract code such as "LC1-1", but may be information indicating latitude and longitude. Also, for example, "home" may be an area name or an address.

Also, "work place" indicates the location information of the work place of the user identified by the user ID. In the example shown in FIG. 5, the "place of work" is illustrated as an abstract code such as "LC1-2", but may be information indicating latitude and longitude. Also, for example, the "place of work" may be an area name or an address.

"Interest" indicates the interest of the user identified by the user ID. That is, "interest" indicates an object in which the user identified by the user ID has a high interest. In the example shown in FIG. 5, one "interest" is shown for each user, but there may be more than one.

For example, the example in FIG. 5 indicates that the age of the user identified by the user ID "U1" is "twenties" and the gender is "male". Also, for example, the user identified by the user ID "U1" indicates that the home is "LC1-1". Also, for example, the user identified by the user ID "U1" indicates that the place of work is "LC1-2". Also, for example, the user identified by the user ID "U1" indicates an interest in "sports".

Note that the user information storage unit 121 may store various types of information, not limited to the above, depending on the purpose. For example, the user information storage unit 121 may store other demographic attribute information and psychographic attribute information. For example, the user information storage unit 121 may store information such as name, family structure, income, and lifestyle. The user information storage unit 121 may also store information (terminal ID) that identifies the terminal device 10 used by the user.

(Message information storage unit 122)
The message information storage unit 122 according to the embodiment stores various information related to messages exchanged between users. 6 is a diagram illustrating an example of a message information storage unit according to the embodiment; FIG. The message information storage unit 122 shown in FIG. 6 includes items such as "group ID", "participating users", "date and time", "source", and "contents".

"Group ID" indicates identification information for identifying a group. For example, "group ID" indicates identification information for identifying a group created in the messenger application.

"Participating users" indicate users who exchange messages. When the group ID is "- (hyphen)", it indicates that the user exchanges messages without creating a group. FIG. 6 shows a case where users U11 and U12 exchange messages without creating a group. "Date and time" indicates the date and time when messages were exchanged between the corresponding participating users. In the example of FIG. 6, "dt12" or the like is shown, but the "date and time" may store a specific date and time such as "July 18, 2021, 13:22:35". Also, "source" indicates the source of the corresponding message. "Content" indicates the content of the corresponding message.

For example, FIG. 6 shows that the participating users of the group (group GP1) identified by the group ID "GP1" are three users U1, U2, and U3. In group GP1, it is shown that user U1 sent the content (character string) of "I'll get on the train soon" as a message to other users (users U2 and U3) of group GP1 at date and time dt12. Further, in group GP1, it is shown that user U2 sent the content (character string) of "XXXX" as a message to other users (users U1 and U3) of group GP1 on date and time dt13. In FIG. 6, "XXXX" is shown as a character string with no content, but the message "XXXX" of the user U2 is assumed to be a specific character string such as "understood", "I'll be on board soon", for example. .

It should be noted that the message information storage unit 122 may store various types of information, not limited to the above, depending on the purpose. For example, the message information storage unit 122 stores information (message ID) for identifying (specifying) each message in association with each message.

(Position information storage unit 123)
The position information storage unit 123 according to the embodiment stores various types of information regarding positions. For example, the position information storage unit 123 stores various types of information regarding the position acquired from the terminal device 10 of each user. 7 is a diagram illustrating an example of a position information storage unit according to the embodiment; FIG. The position information storage unit 123 shown in FIG. 7 includes items such as "user ID" and "position information". "Location information" includes items such as "date and time" and "location".

"User ID" indicates identification information for identifying a user. "Position information" indicates the history of the user's position information. "Date and time" indicates the date and time when each piece of position information was acquired. In the example of FIG. 7, the "date and time" is illustrated with an abstract code such as "dt11", but the "date and time" is a specific date and time such as "July 18, 2021 13:07:48". may be stored. "Position" indicates the position information of the corresponding user at the corresponding date and time. In the example of FIG. 7, the "position" is illustrated by an abstract code "LC11" or the like, but specific latitude/longitude information or the like may be stored in the "position".

For example, it indicates that the position "LC11" of the user (user U1) identified by the user ID "U1" was obtained at the date and time "dt11". For example, it indicates that the location "LC11" of the terminal device 10-1 used by the user U1 was acquired at the date and time "dt11".

Also, for example, FIG. 7 shows that the position “LC21” of the user U1 was obtained at the date and time “dt21”. For example, it indicates that the position "LC21" of the terminal device 10-1 used by the user U1 was acquired at the date and time "dt21".

It should be noted that the position information storage unit 123 may store various types of information, not limited to the above, depending on the purpose. For example, the position information storage unit 123 may store not only position information but also various sensor information such as acceleration information. For example, the position information storage unit 123 may store information related to the user's context, such as information indicating the date and time and the user's behavior at that position (for example, waiting for a train, running, etc.).

(Estimated position information storage unit 124)
The estimated position information storage unit 124 according to the embodiment stores various types of information regarding the estimated position (estimated position). For example, the estimated position information storage unit 124 stores various information related to the position estimated for each user. 8 is a diagram illustrating an example of an estimated position information storage unit according to the embodiment; FIG. The estimated position information storage unit 124 shown in FIG. 8 includes items such as "user ID" and "estimated position information". The "estimated position information" includes items such as "date and time" and "estimated position".

"User ID" indicates identification information for identifying a user. "Estimated location information" indicates the history of the user's location information. "Date and time" indicates the date and time for which the position is to be estimated. In the example of FIG. 8, "date and time" is illustrated by an abstract code such as "dt12". may be stored. Also, "estimated position" indicates the estimated position of the corresponding user at the corresponding date and time. In the example of FIG. 8, the "estimated position" is illustrated with an abstract code "LC12" or the like, but the "estimated position" may store specific latitude/longitude information or the like.

For example, it indicates that the position of the user (user U1) identified by the user ID "U1" at date and time "dt12" was estimated to be the position "LC12". For example, it indicates that user U1 was estimated to have been located (located) at location “LC12” at date and time “dt12”.

It should be noted that the estimated position information storage unit 124 may store various types of information, not limited to the above, depending on the purpose. For example, the estimated position information storage unit 124 stores not only the estimated position but also information related to the user's context, such as information indicating the date and time of the estimated position and the user's behavior at the estimated position (for example, waiting for a train, running, etc.). good too.

(control unit 130)
Returning to the description of FIG. 4, the control unit 130 is a controller, and is stored in a storage device inside the information processing apparatus 100 by, for example, a CPU (Central Processing Unit) or MPU (Micro Processing Unit). Various programs (corresponding to an example of an information processing program) are executed by using the RAM as a work area. Also, the control unit 130 is a controller, and is implemented by an integrated circuit such as an ASIC (Application Specific Integrated Circuit) or an FPGA (Field Programmable Gate Array).

As shown in FIG. 4, the control unit 130 includes an acquisition unit 131, a determination unit 132, an estimation unit 133, and a provision unit 134, and implements or executes the information processing functions and actions described below. . Note that the internal configuration of the control unit 130 is not limited to the configuration shown in FIG. 4, and may be another configuration as long as it performs information processing to be described later.

(Acquisition unit 131)
Acquisition unit 131 acquires various types of information. For example, the acquisition unit 131 acquires various information from the storage unit 120 such as the user information storage unit 121, the message information storage unit 122, the position information storage unit 123, the estimated position information storage unit 124, and the like. For example, the acquisition unit 131 receives various information from an external information processing device such as the terminal device 10 .

The acquisition unit 131 acquires history information indicating a user's action history. Acquisition unit 131 acquires history information indicating a user's location history. The acquisition unit 131 acquires the user's action history collected by another application (second application) different from the messenger application (first application). Acquisition unit 131 acquires the location history of the user collected by the second application.

Acquisition unit 131 acquires message information indicating a message between multiple users including a user in a messenger application. Acquisition unit 131 acquires message information indicating a message transmitted from a user to another user as a transmission destination. Acquisition unit 131 acquires message information indicating a message including character information. Acquisition unit 131 acquires message information indicating a message including image information. The acquisition unit 131 acquires other message information indicating other messages transmitted from other users with the user as the destination.

(Determination unit 132)
The determination unit 132 executes determination processing for determining various types of information. The determination unit 132 determines various information based on the various information stored in the storage unit 120 . The determination unit 132 determines various information based on the various information acquired by the acquisition unit 131 .

For example, the determination unit 132 executes processing for determining the content of the message. The determination unit 132 executes analysis processing according to the modal of information included in the message, and determines the contents of the message.

For example, the determining unit 132 executes processing for analyzing character information included in the message by appropriately using natural language processing technology such as morphological analysis. The determination unit 132 identifies (determines) the content of the message by semantic analysis of the character information of the message. The determination unit 132 identifies (determines) the contents of the character information by analyzing the character information using semantic analysis as appropriate. For example, the determination unit 132 determines the contents of the character information by analyzing the character information using various conventional techniques such as syntax analysis as appropriate.

Further, when image information is included in the message, the determination unit 132 executes processing for analyzing the image information included in the message by appropriately using techniques such as image analysis. In addition, when the message includes voice information, the determination unit 132 executes processing for analyzing the voice information included in the message by appropriately using a technique such as automatic speech recognition (ASR). For example, the determination unit 132 converts voice information included in the message into text, and uses the textualized information (character information) to specify (determine) the contents of the voice information.

The determination unit 132 extracts various information. For example, the determination unit 132 extracts various information from the storage unit 120 such as the user information storage unit 121, the message information storage unit 122, the position information storage unit 123, the estimated position information storage unit 124, and the like.

The determination unit 132 extracts from the message information storage unit 122 information about the target user's message to be estimated. The determination unit 132 also extracts the position history of the target user to be estimated from the position information storage unit 123 .

(Estimation unit 133)
The estimation unit 133 estimates various information. The estimation unit 133 estimates various information. For example, the estimation unit 133 performs estimation based on various information acquired from an external information processing device such as the terminal device 10 or the service providing device 20 . For example, the estimation unit 133 performs estimation based on various information stored in the storage unit 120 . For example, the estimation unit 133 estimates based on information determined by the determination unit 132 .

The estimation unit 133 estimates the position of the user at the time corresponding to the message based on the history information and the message information acquired by the acquisition unit 131 . The estimation unit 133 estimates the user's position based on the content of the message. The estimator 133 estimates the user's location in time with respect to the message. The estimation unit 133 estimates the position of the user at the time of message exchange. The estimation unit 133 estimates the position of the user at the time indicated by the content of the message.

The estimation unit 133 estimates the position of the user at a time when the position is not included in the position history. The estimation unit 133 estimates the position of the user at a third time between the first time and the second time when the position is included in the position history.

The estimation unit 133 estimates the position of the user at the time when the position is included in the position history. The estimation unit 133 changes the position of the user at the time indicated by the position history. The estimation unit 133 details the user's position at the time indicated by the position history using a message. The estimation unit 133 narrows down the first position indicated by the history information to a second position that is more detailed than the first position based on the content of the message.

The estimation unit 133 estimates the position of the user based on the character information. The estimation unit 133 estimates the position of the user based on the image information. The estimation unit 133 estimates the user's position based on other messages.

The estimating unit 133 estimates the position of the user based on the content of the exchanges between the user and other users via the messenger application. The estimating unit 133 estimates the position of the user based on a message transmitted from the user with another user as the destination and another message that is the response of the other user corresponding to the message.

The estimation unit 133 executes generation processing for generating various types of information. The estimation unit 133 generates various information based on various information stored in the storage unit 120 . For example, the estimation unit 133 also functions as a generation unit that generates various types of information. The estimation unit 133 generates various information. For example, the estimation unit 133 generates various information from information stored in the user information storage unit 121, the message information storage unit 122, the position information storage unit 123, the estimated position information storage unit 124, and the like.

For example, the estimating unit 133 adds the target user's estimated position to the target user's position history, and generates a complementary position history in which a position at a time not included in the position history is complemented with the estimated position. In FIG. 1, the estimating unit 133 adds the estimated position of the user U1 at the date and time dt12 to the position history LG of the user U1, and replaces the position of the user U1 at the date and time dt12 not included in the position history LG with the estimated position. Complemented complementary position history LG2 is generated.

(Providing unit 134)
The providing unit 134 provides various information. The providing unit 134 provides various types of information to an external information processing device. For example, the providing unit 134 provides various information to the terminal device 10 and the service providing device 20 . The providing unit 134 transmits various types of information to the terminal device 10 and the service providing device 20 . The providing unit 134 provides various information based on the various information acquired by the acquiring unit 131 . The providing unit 134 provides various information according to the determination by the determining unit 132 . The providing unit 134 provides various information according to the estimation by the estimating unit 133 .

The providing unit 134 provides a service using the information regarding the user's position estimated by the estimating unit 133 . The providing unit 134 provides information on the user's position estimated by the estimating unit 133 .

For example, the provision unit 134 adds the target user's estimated position to the target user's position history, and provides a complementary position history in which the position at a time not included in the position history is complemented with the estimated position. For example, the provision unit 134 transmits the complementary position history of the target user to an external device used by a service provider that provides the target user with a service using position information. The providing unit 134 provides the complementary position history of the target user generated by the estimating unit 133 . In FIG. 1 , the providing unit 134 transmits the complementary location history LG2 of the user U1 generated by the estimating unit 133 to an external device used by a service provider who provides the user U1 with a service using location information.

[3. Information processing flow]
Next, the procedure of information processing by the information processing system 1 according to the embodiment will be described with reference to FIG. 9 . FIG. 9 is a flowchart illustrating an example of information processing according to the embodiment;

As shown in FIG. 9, the information processing apparatus 100 acquires history information indicating a user's action history (step S101). For example, the information processing apparatus 100 acquires history information indicating the action history of the user U1 whose position is to be estimated.

The information processing apparatus 100 also acquires message information indicating messages between a plurality of users including the user in the messenger application (step S102). For example, the information processing apparatus 100 acquires message information indicating messages in the group GP1 including the user U1 in the messenger application.

Then, the information processing apparatus 100 estimates the position of the user at the time corresponding to the message based on the history information and the message information (step S103). For example, the information processing apparatus 100 estimates the position of the user U1 at the date and time when the user U1 sent the message, based on the history of the position of the user U1 and the content of the message from the user U1.

[4. effect〕
As described above, the information processing apparatus 100 according to the embodiment has the acquisition unit 131 and the estimation unit 133 . Acquisition unit 131 acquires history information indicating a user's action history and message information indicating a message between a plurality of users including a user in a messenger application. The estimation unit 133 estimates the position of the user at the time corresponding to the message based on the history information and the message information acquired by the acquisition unit 131 .

As described above, the information processing apparatus 100 according to the embodiment uses both history information indicating a user's action history and message information indicating a message between a plurality of users including a user in a messenger application to respond to messages. By estimating the user's position at the time when the user's position is determined, the user's position can be properly estimated.

Also, in the information processing apparatus 100 according to the embodiment, the estimation unit 133 estimates the position of the user based on the content of the message.

In this way, the information processing apparatus 100 according to the embodiment can appropriately estimate the user's position by estimating the user's position based on the content of the message.

Also, in the information processing apparatus 100 according to the embodiment, the estimation unit 133 estimates the position of the user at the time of the message.

In this way, the information processing apparatus 100 according to the embodiment can appropriately estimate the user's position by estimating the user's position at the time of the message.

In addition, in the information processing apparatus 100 according to the embodiment, the acquisition unit 131 acquires message information indicating a message transmitted from a user to another user as a transmission destination.

As described above, the information processing apparatus 100 according to the embodiment estimates the position of the user at the time corresponding to the message by using the message information indicating the message transmitted from the user with the other user as the destination. A good estimate of the user's position can be obtained.

In addition, in the information processing apparatus 100 according to the embodiment, the acquisition unit 131 acquires history information indicating the user's position history.

As described above, the information processing apparatus 100 according to the embodiment appropriately estimates the user's position by estimating the user's position at the time corresponding to the message using the history information indicating the user's position history. can be done.

Also, in the information processing apparatus 100 according to the embodiment, the estimation unit 133 estimates the position of the user at a time when the position is not included in the position history.

In this way, the information processing apparatus 100 according to the embodiment can appropriately estimate the user's position by estimating the user's position at a time when the position is not included in the position history. Accordingly, the information processing apparatus 100 can estimate the user's position at the time when the user's position has not yet been acquired, and complement the position history.

Also, in the information processing apparatus 100 according to the embodiment, the estimation unit 133 estimates the position of the user at the third time between the first time and the second time when the position is included in the position history.

Thus, the information processing apparatus 100 according to the embodiment can appropriately estimate the user's position by estimating the user's position between two times when the position is not included in the position history. Accordingly, the information processing apparatus 100 can estimate the user's position at the time when the user's position has not yet been acquired, and complement the position history.

Also, in the information processing apparatus 100 according to the embodiment, the estimation unit 133 estimates the position of the user at the time when the position is included in the position history.

In this way, the information processing apparatus 100 according to the embodiment can appropriately estimate the user's position by estimating the user's position at the time when the position is included in the position history. Accordingly, the information processing apparatus 100 can estimate the user's position at the time when the user's position has already been acquired, and verify the accuracy of the acquired position.

Also, in the information processing apparatus 100 according to the embodiment, the estimation unit 133 changes the position of the user at the time indicated by the position history.

In this way, the information processing apparatus 100 according to the embodiment can appropriately change the user's position by changing the user's position at the time indicated by the position history. Accordingly, the information processing apparatus 100 can appropriately correct the position when the accuracy of the acquired user position is low.

In addition, in the information processing apparatus 100 according to the embodiment, the estimation unit 133 details the position of the user at the time indicated by the position history using a message.

In this way, the information processing apparatus 100 according to the embodiment can detail the user's position by using the message to detail the user's position at the time indicated by the position history. Accordingly, the information processing apparatus 100 can improve the accuracy of the acquired user position.

Also, in the information processing apparatus 100 according to the embodiment, the estimation unit 133 narrows down the first position indicated by the history information to a second position that is more detailed than the first position based on the content of the message.

As described above, the information processing apparatus 100 according to the embodiment narrows down the first position indicated by the history information to the detailed second position based on the content of the message, thereby realizing the detailed position of the user. can. Accordingly, the information processing apparatus 100 can improve the accuracy of the acquired user position.

In addition, in the information processing apparatus 100 according to the embodiment, the acquisition unit 131 acquires message information indicating a message including character information. The estimation unit 133 estimates the position of the user based on the character information.

As described above, the information processing apparatus 100 according to the embodiment can appropriately estimate the user's position by estimating the user's position based on the character information included in the message.

In addition, in the information processing apparatus 100 according to the embodiment, the acquisition unit 131 acquires message information indicating a message including image information. The estimation unit 133 estimates the position of the user based on the image information.

Thus, the information processing apparatus 100 according to the embodiment can appropriately estimate the user's position by estimating the user's position based on the image information included in the message.

In addition, in the information processing apparatus 100 according to the embodiment, the acquisition unit 131 acquires other message information indicating other messages transmitted from other users whose destination is the user. The estimation unit 133 estimates the user's position based on other messages.

In this way, the information processing apparatus 100 according to the embodiment appropriately estimates the user's position by estimating the user's position based on other messages transmitted from other users with the user as the destination. be able to.

Also, in the information processing apparatus 100 according to the embodiment, the estimation unit 133 estimates the position of the user based on the details of the exchanges between the user and other users via the messenger application.

Thus, the information processing apparatus 100 according to the embodiment can appropriately estimate the user's position by estimating the user's position based on messages from both the user and other users.

Further, in the information processing apparatus 100 according to the embodiment, the estimating unit 133 performs the , to estimate the user's position.

In this way, the information processing apparatus 100 according to the embodiment appropriately estimates the user's position by estimating the user's position based on the message from the user and the responses to the message from other users. be able to.

The information processing apparatus 100 according to the embodiment also has a providing unit 134 . The providing unit 134 provides a service using the information regarding the user's position estimated by the estimating unit 133 .

In this way, the information processing apparatus 100 according to the embodiment can provide a service using the estimated user position by providing a service using information about the estimated user position.

Also, in the information processing apparatus 100 according to the embodiment, the provision unit 134 provides information regarding the user's position estimated by the estimation unit 133 .

In this way, the information processing apparatus 100 according to the embodiment can provide information about the estimated user position by providing information about the estimated user position.

[5. Hardware configuration]
The information processing apparatus 100 according to the embodiments described above is implemented by a computer 1000 configured as shown in FIG. 10, for example. FIG. 10 is a hardware configuration diagram showing an example of a computer that implements the functions of the information processing apparatus. The computer 1000 includes a CPU 1100, a RAM 1200, a ROM (Read Only Memory) 1300, a HDD (Hard Disk Drive) 1400, a communication interface (I/F) 1500, an input/output interface (I/F) 1600, and a media interface (I/F). ) 1700.

The CPU 1100 operates based on programs stored in the ROM 1300 or HDD 1400 and controls each section. The ROM 1300 stores a boot program executed by the CPU 1100 when the computer 1000 is started up, a program depending on the hardware of the computer 1000, and the like.

The HDD 1400 stores programs executed by the CPU 1100, data used by the programs, and the like. Communication interface 1500 receives data from other devices via network N, sends the data to CPU 1100, and transmits data generated by CPU 1100 to other devices via network N. FIG.

The CPU 1100 controls output devices such as displays and printers, and input devices such as keyboards and mice, through an input/output interface 1600 . CPU 1100 acquires data from an input device via input/output interface 1600 . CPU 1100 also outputs the generated data to an output device via input/output interface 1600 .

Media interface 1700 reads programs or data stored in recording medium 1800 and provides them to CPU 1100 via RAM 1200 . CPU 1100 loads such a program from recording medium 1800 onto RAM 1200 via media interface 1700, and executes the loaded program. The recording medium 1800 is, for example, an optical recording medium such as a DVD (Digital Versatile Disc) or a PD (Phase change rewritable disc), a magneto-optical recording medium such as an MO (Magneto-Optical disk), a tape medium, a magnetic recording medium, or a semiconductor memory. etc.

For example, when the computer 1000 functions as the information processing apparatus 100 according to the embodiment, the CPU 1100 of the computer 1000 implements the functions of the control unit 130 by executing programs loaded on the RAM 1200 . The CPU 1100 of the computer 1000 reads these programs from the recording medium 1800 and executes them, but as another example, these programs may be acquired via the network N from another device.

As described above, some of the embodiments of the present application have been described in detail based on the drawings, but these are merely examples, and various modifications, It is possible to carry out the invention in other forms with modifications.

[6. others〕
Further, among the processes described in the above embodiments, all or part of the processes described as being automatically performed can be manually performed, or the processes described as being performed manually can be performed manually. All or part of this can also be done automatically by known methods. In addition, information including processing procedures, specific names, various data and parameters shown in the above documents and drawings can be arbitrarily changed unless otherwise specified. For example, the various information shown in each drawing is not limited to the illustrated information.

Also, each component of each device illustrated is functionally conceptual, and does not necessarily need to be physically configured as illustrated. In other words, the specific form of distribution and integration of each device is not limited to the one shown in the figure, and all or part of them can be functionally or physically distributed and integrated in arbitrary units according to various loads and usage conditions. Can be integrated and configured.

Further, each process described in each embodiment described above can be appropriately combined within a range in which the contents of the process are not inconsistent.

Also, the above-mentioned "section, module, unit" can be read as "means" or "circuit". For example, the acquisition unit can be read as acquisition means or an acquisition circuit.

1 information processing system 100 information processing device 121 user information storage unit 122 message information storage unit 123 position information storage unit 124 estimated position information storage unit 130 control unit 131 acquisition unit 132 determination unit 133 estimation unit 134 provision unit 10 terminal device 20 service provision Device N network

Claims (14)

History information indicating a location history in which user's location information is associated with information indicating date and time, and a message indicating a message including location-related information between multiple users including the user in a messenger application. an acquisition unit that acquires information;
Based on the history information and the message information acquired by the acquisition unit, using the time corresponding to the message and the location information of the user associated with the date and time corresponding to the time, an estimation unit that estimates the position of the user;
with
The estimation unit
Estimate the location of the user at the time when the location history does not contain a location.
An information processing device characterized by: The estimation unit
The information processing apparatus according to claim 1, wherein the position of the user is estimated based on the content of the message. The estimation unit
3. The information processing apparatus according to claim 1, wherein the position of the user at the time related to the message is estimated. The acquisition unit
4. The information processing apparatus according to any one of claims 1 to 3, wherein the message information indicating the message transmitted from the user with another user as a destination is acquired. The estimation unit
The information processing according to any one of claims 1 to 4, wherein the position of the user is estimated at a third time between a first time and a second time when the position is included in the position history. Device. The acquisition unit
obtaining the message information indicating the message including textual information;
The estimation unit
The information processing apparatus according to any one of claims 1 to 5 , wherein the position of the user at the time is estimated based on the character information. The acquisition unit
obtaining the message information indicative of the message including image information;
The estimation unit
The information processing apparatus according to any one of claims 1 to 6 , wherein the position of the user at the time is estimated based on the image information. The acquisition unit
Obtaining other message information indicating other messages sent from other users with the user as a destination;
The estimation unit
The information processing apparatus according to any one of claims 1 to 7 , wherein the position of the user is estimated based on the other message. The estimation unit
9. The information processing apparatus according to claim 8 , wherein the position of the user is estimated based on the contents of exchanges between the user and another user via the messenger application. The estimation unit
estimating the position of the user based on the message transmitted from the user to another user and the other message that is the response of the other user corresponding to the message; 10. The information processing apparatus according to claim 8 or 9 . a providing unit that provides a service using information about the user's position estimated by the estimating unit;
The information processing apparatus according to any one of claims 1 to 10 , further comprising: The providing unit
12. The information processing apparatus according to claim 11 , wherein the information on the position of the user estimated by the estimation unit is provided to the user. A computer-executed information processing method comprising:
History information indicating a location history in which user's location information is associated with information indicating date and time, and a message indicating a message including location-related information between multiple users including the user in a messenger application. an obtaining step of obtaining information;
Based on the history information and the message information acquired in the acquisition step, using the time corresponding to the message and the location information of the user associated with the date and time corresponding to the time, an estimating step of estimating the location of the user;
including
The estimation step includes
Estimate the location of the user at the time when the location history does not contain a location.
An information processing method characterized by: History information indicating a location history in which user's location information is associated with information indicating date and time, and a message indicating a message including location-related information between multiple users including the user in a messenger application. an acquisition procedure for acquiring information;
Based on the history information and the message information acquired by the acquisition procedure, using the time corresponding to the message and the location information of the user associated with the date and time corresponding to the time, an estimation procedure for estimating the location of the user;
on the computer , and
The estimation procedure includes:
An information processing program for estimating the position of the user at the time when the position is not included in the position history .

Images