JP2021022277A - Information processing apparatus, information processing method, and program - Google Patents

Abstract

To suitably make use of transaction data stored on blocks.SOLUTION: An information processing apparatus 100A comprises: position data acquisition means that acquires position data of a user who carries a mobile terminal together with date data; action history data storage means that stores the position data and the date data acquired by the position data acquisition means as action history data of the user on data blocks connected by hash chains constituted in a network; and action evaluation means that evaluates whether the user's action is a normal action or a special action by using the action history data stored in the action history data storage means.SELECTED DRAWING: Figure 3

Description

The present invention relates to information processing devices, information processing methods and programs.

In recent years, commercial transactions using virtual currencies such as Bitcoin (registered trademark) have been carried out. In commercial transactions using the virtual currency, a technology called blockchain is used to prevent fraud without the need for centralized management. In the blockchain, multiple transaction data, previous hash values and other information are defined as "blocks", and the trust of the information in the "blocks" by the process of consensus building within the network formed by all participants. The sex is guaranteed. However, when conducting commercial transactions of virtual currency by such blockchain technology, there is a problem that the number of cases that can be processed per second is small.

In order to deal with such a problem, for example, Non-Patent Document 1 discloses a technique called a hash graph.

"There is technology that goes beyond blockchain! What is the distributed ledger" Hashgraph "? , [Online], [Search on September 3, 2018], Internet <URL: https://coin-otaku.com/topic/7754>

In the hash graph technology disclosed in Non-Patent Document 1, transaction data is recorded with the approval of some randomly selected users, so that processing is faster than processing using blockchain technology. It will be feasible. However, all the techniques are common in that a plurality of blocks in which a plurality of transaction data are stored in a time series are connected, and the transaction data stored in the blocks is not sufficiently utilized in an appropriate manner.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an information processing device, an information processing method, and a program capable of suitably utilizing transaction data stored on a block. There is.

In order to achieve the above object, the information processing device according to the first aspect of the present invention is
A location data acquisition means for acquiring the location data of a user carrying a mobile terminal together with date and time data,
An action history data storage means that stores the position data and the date and time data acquired by the position data acquisition means as the action history data of the user in a data block connected by a hash chain constructed in the network.
An action evaluation means for evaluating whether the user's action is a normal action or a special action using the action history data stored in the action history data storage means, and
To be equipped.

In addition to the action history data stored in the action history data storage means, the action evaluation means also uses the current position data acquired by the position data acquisition means to determine whether the user's action is a normal action. Evaluate whether it is an action,
You may do so.

The behavior evaluation means evaluates whether the user's behavior is a normal behavior or a special behavior by using the information of the day of the week obtained from the current date and time data acquired by the position data acquisition means.
You may do so.

When the behavior of the user is evaluated as a normal behavior by the behavior evaluation means, the behavior of the user is estimated based on the behavior history data of the user, and the behavior of the user is a special behavior by the behavior evaluation means. A behavior estimation means for estimating the behavior of the user based on the behavior history data other than the user when evaluated to be present.
You may do so.

Further, a recommendation information acquisition means for acquiring the recommendation information provided to the user based on the behavior of the user estimated by the behavior estimation means, and
An information providing means for providing the recommended information acquired by the recommended information acquiring means to the user.
You may do so.

Further, the information providing means includes a feedback acquisition means for acquiring feedback information from the user after the recommendation information is provided to the user.
The recommendation information acquisition means acquires the recommendation information provided to the user based on the feedback information acquired by the feedback acquisition means.
You may do so.

In order to achieve the above object, the information processing method according to the second aspect of the present invention is
The location data acquisition step to acquire the location data of the user who carries the mobile terminal together with the date and time data,
The action history data storage step of storing the position data and the date and time data acquired in the position data acquisition step as the user's action history data in a data block connected by a hash chain constructed in the network, and
An action evaluation step for evaluating whether the user's action is a normal action or a special action using the action history data stored in the action history data storage step, and
To be equipped.

In order to achieve the above object, the program according to the third aspect of the present invention is
Computer,
Location data acquisition means that acquires the location data of the user who carries the mobile terminal together with the date and time data,
An action history data storage means that stores the position data and the date and time data acquired by the position data acquisition means as the action history data of the user in a data block connected by a hash chain constructed in the network.
A behavior evaluation means for evaluating whether the user's behavior is a normal behavior or a special behavior using the behavior history data stored in the behavior history data storage means.
To function as.

According to the present invention, transaction data stored on a block can be preferably utilized.

It is a block diagram which shows an example of the information processing system which concerns on embodiment. It is a figure explaining an example of the mesh code which concerns on embodiment. It is a block diagram which shows an example of the information processing apparatus which concerns on embodiment. It is a block diagram which shows an example of the mobile terminal which concerns on embodiment. It is a flowchart which shows an example of the initial registration process. It is a flowchart which shows an example of a data block registration process. (A) is a diagram showing a configuration example of a hash chain, and (B) is a diagram showing a configuration example of a hash chain in which new data blocks are connected. (A) and (B) are diagrams showing an example of a generated transaction. It is a figure which shows an example of the registration contents of a hash chain. It is a flowchart which shows an example of the behavior evaluation process. It is a figure explaining a specific example of a behavioral evaluation process. It is a flowchart which shows an example of a recommendation process. It is a figure explaining the specific example of a recommendation process.

An example in which the information processing device 100 in the present invention is applied to the information processing system 1 shown in FIG. 1 will be described. In the information processing system 1, as shown in FIG. 1, information processing devices 100A to 100C (information processing devices 100A to 100C are also simply referred to as information processing devices 100) and mobile terminals 200A to 200D (mobile terminals 200A to 200D are simply mobile). Each of the terminals (also referred to as the terminal 200) is communicably connected via the network 300.

In FIG. 1, three information processing devices 100A to 100C are shown, but this is only an example, and any number of information processing devices 100 may exist. Further, in FIG. 1, four mobile terminals 200A to 200D are described as mobile terminals 200, but this is a case where four users A to D exist as users of the mobile terminal 200. Is an example of. Any number of mobile terminals 200 may exist. Here, it is assumed that the user A possesses the mobile terminal 200A, the user B possesses the mobile terminal 200B, the user C possesses the mobile terminal 200C, and the user D possesses the mobile terminal 200D.

The information processing device 100 is an information device (so-called computer) such as a PC (Personal Computer), and constructs a distributed network 300 such as P2P (Peer to Peer). The information processing system 1 is not limited to the P2P type system, and may be, for example, a cloud computing type. Further, the mobile terminal 200 is an information terminal having a GPS (Global Positioning System) function such as a mobile phone, a smartphone, or a tablet, and GPS data (GPS data) indicating the current position of the user of the mobile terminal 200 via the network 300. The longitude / latitude / altitude data) is periodically transmitted to the information processing apparatus 100 (for example, once every 30 minutes).

The information processing device 100 converts the GPS data received from the mobile terminal 200 into a mesh code, and treats the mesh code as position data. The mesh code is an identifier uniquely assigned to an area having a certain area (here, referred to as "mesh"). As shown in FIG. 2, for example, the mesh code divides the plane into a mesh shape and is given as a unique value for each mesh.

In FIG. 2, the mesh code A011 of the central mesh (mesh 5) and the mesh codes A000, A001, A002, A010, A012, A020, A021 of the surrounding meshes (mesh 1 to mesh 4, mesh 6 to mesh 9) are shown. A022 is shown. In FIG. 2, only 9 meshes of 3 × 3 are shown, but in reality, each mesh extends vertically and horizontally in addition to the 3 × 3 mesh.

Further, in FIG. 2, each mesh is a square of 500 meters × 500 meters, but the mesh is not limited to this. For example, it may be a rectangle such as 300 meters × 500 meters. Further, it is not necessary that all the meshes have the same shape, and as long as the meshes have a certain area and are arranged without gaps, the meshes may be defined by any delimiter method. For example, each of the 23 wards of Tokyo may be regarded as one mesh, and a unique mesh code may be assigned to each ward. For example, the mesh code of Chiyoda Ward may be defined as A011, the mesh code of Minato Ward may be defined as A021, and the mesh code of Shinagawa Ward may be defined as A031.

When the information processing device 100 receives the GPS data transmitted from the mobile terminal 200, for example, "User A is at the location (mesh 5) of mesh code A011 at 15:00 on Sunday, July 7". Generates transaction data including information on the user of the mobile terminal 200, the date and time, and the position of the user at that date and time, which represents the content (transaction), generates a new data block, stores the transaction data, and has an existing hash. It functions as a hash chain registration device that connects to the chain. As described above, the information processing apparatus 100 also functions as a transaction generator because it generates transaction data when it receives GPS data.

The content registered by the hash chain registration device is shared by each information processing device 100 via the network 300. Further, normally, a certain number of transaction data is stored in one data block (a certain number of transaction data are collectively stored in one block), but in the present embodiment, in order to facilitate understanding, It is assumed that one transaction data is stored in one data block.

In the present embodiment, transaction data generated by the information processing apparatus 100 based on receiving GPS data periodically transmitted from the mobile terminal 200 is stored in one unit called a data block, and the transaction data is stored in one unit. It is managed by a type of hash chain for each user and each mesh in which data blocks are linked in chronological order. For example, the transaction data representing the content (transaction) such as "User A is at the location (mesh 5) of mesh code A011 at 15:00 on Sunday, July 7" is a hash chain of the type of user A and mesh 5. Data of the same content is registered and managed as a new data block in each of the hash chains of the type.

Further, the information processing apparatus 100 in the present embodiment extracts the user's behavior history data from the data block included in the hash chain of the user's type, and uses the extracted behavior history data to perform normal behavior of the user. It also functions as a behavior evaluation device that evaluates whether it is (average behavior as usual) or special behavior (special behavior different from usual).

The function of the information processing device 100 as the behavior evaluation device in the present embodiment will be described in detail later, but the behavior history data of the user extracted from a plurality of registered data blocks is compared with the current position data of the user. By doing so, it is evaluated whether the current behavior of the user is a normal behavior or a special behavior.

Next, the configuration of the information processing device 100 according to the present embodiment will be described with reference to FIG. In the illustrated example, the information processing device 100A is taken as an example, but since the same applies to the information processing devices 100B and 100C, the description of the information devices other than the information processing device 100A will be omitted.

As shown in FIG. 3, the information processing device 100A (hereinafter, information processing device 100) includes a storage unit 110, a control unit 120, an input / output unit 130, a communication unit 140, and a system bus that connects them to each other. (Not shown) and.

The storage unit 110 includes a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. The ROM stores a program executed by the CPU (Central Processing Unit) of the control unit 120 and data necessary for executing the program in advance (not shown). Specifically, in the present embodiment, a program for making the information processing device 100 function as a hash chain registration device, a behavior evaluation device, and a recommendation device is installed in advance. RAM stores data that is created or modified during program execution. The storage unit 110 stores various types of hash chains 111 and mesh code conversion data 112 as main information used by the program executed by the control unit 120.

The hash chain 111 of each type is a hash chain corresponding to each type of user (A, B, C, ...) And mesh (1, 2, 3, ...), and each hash chain has transaction data. It is a concatenation of stored data blocks. The hash chain 111 of each type is stored in the storage unit 110 in the data block registration process described later, and is referred to by the behavior evaluation process and the recommendation process described later.

The mesh code conversion data 112 is data for acquiring a mesh code corresponding to the position from GPS data (latitude and longitude data). For example, when the mesh code is defined as a rectangular mesh as shown in FIG. 2, the mesh code conversion data 112 is tabular data that associates each range of latitude and longitude with the mesh code. Good. For example, when a different mesh is assigned to each floor of a building, a mesh code may be defined in consideration of altitude by including altitude data in GPS data.

The control unit 120 is composed of a CPU and the like. The control unit 120 operates according to a program stored in the storage unit 110, and executes processing according to the program. The control unit 120 includes an initial registration unit 121, a synchronization processing unit 122, a data block registration unit 123, a data acquisition unit 124, and an action evaluation unit as main functional units provided by a program stored in the storage unit 110. A unit 125 and a recommendation processing unit 126 are provided.

The initial registration unit 121 generates initial information necessary for generating a new type of hash chain based on an operation on the input / output unit 130 of the user of the information processing device 100 and a request received via the communication unit 140. It is a functional part that realizes the function to register. Although details will be described later, the initial registration unit 121 has a function of registering, for example, a user A identifier, an index value, and the like as initial information necessary for generating a hash chain of the user A type (that is, a hash described later). It has a function to register the base information of the chain).

The synchronization processing unit 122 is a functional unit that realizes a function of synchronizing various types of hash chains stored in the information processing device 100 with various types of hash chains stored in the other information processing device 100. Although details will be described later, the synchronization processing unit 122 has a function of synchronizing transaction data with another information processing device 100 before and after registering transaction data in the data block of the information processing device 100 in the data block registration process described later. doing. Further, the synchronization processing unit 122 has a function of synchronizing the base information of the hash chain with another information processing device 100 in the initial registration process described later.

The data block registration unit 123 has a function of adding a data block including transaction data generated based on the received GPS data to the corresponding type of hash chain among the various hash chains 111 of the information processing apparatus 100. It is a functional part to be realized. As will be described in detail later, when the data block registration unit 123 generates transaction data such as "User A is at the location of mesh code A011 (mesh 5) at 15:00 on Sunday, July 7". , User A and mesh 5 have a function of registering the content (transaction data) as a new data block in each type of hash chain.

The data acquisition unit 124 is a functional unit that realizes a function of acquiring transaction data included in a data block included in each registered hash chain 111 based on a user's designation of the information processing apparatus 100.

The behavior evaluation unit 125 is a functional unit that realizes a function of evaluating whether the user's behavior is a normal behavior or a special behavior by using the transaction data acquired by the data acquisition unit 124.

The recommendation processing unit 126 estimates the subsequent behavior of the user evaluated by the behavior evaluation unit 125 based on the transaction data acquired by the data acquisition unit 124, and provides the user with recommendation information based on the estimation result. It is a functional part that realizes the function.

Each of these functional units cooperates to make the information processing device 100 function as a hash chain registration device, a behavior evaluation device, and a recommendation device.

The input / output unit 130 is composed of a keyboard, a mouse, a camera, a microphone, a liquid crystal display, an organic EL (Electro-Luminence) display, and the like, and is a device for inputting / outputting data.

The communication unit 140 is a device for communicating with another information processing device 100 or the mobile terminal 200A to the mobile terminal 200D via the network 300.

The above is the configuration of the information processing device 100. Subsequently, the configuration of the mobile terminal 200 according to the present embodiment will be described with reference to FIG. In the illustrated example, the mobile terminal 200A is taken as an example, but since the same applies to the mobile terminals 200B, 200C and 200D, the description of other than the mobile terminal 200A will be omitted.

As shown in FIG. 4, the mobile terminal 200A (hereinafter referred to as the mobile terminal 200) connects the storage unit 210, the control unit 220, the input / output unit 230, the communication unit 240, and the GPS unit 250 to each other. It is equipped with a system bus (not shown).

The storage unit 210 includes a ROM, a RAM, and the like. The ROM stores a program executed by the CPU of the control unit 220 and data necessary for executing the program in advance (not shown). Specifically, in the present embodiment, a program for making the mobile terminal 200 function as a GPS data transmission device, a recommendation information display device, or the like is installed in advance. RAM stores data that is created or modified during program execution.

The control unit 220 is composed of a CPU and the like. The control unit 220 operates according to a program stored in the storage unit 210, and executes processing according to the program.

The input / output unit 230 is composed of a touch panel, a camera, a microphone, a liquid crystal display, an organic EL display, and the like, and is a device for inputting / outputting data.

The communication unit 240 is a device for communicating with the information processing device 100 and other mobile terminals 200 via the network 300.

The GPS unit 250 is a device for acquiring information (GPS data) of the current position (longitude, latitude, altitude) of the mobile terminal 200.

The above is the configuration of the mobile terminal 200. When the mobile terminal 200 functions as a GPS data transmission device, the position information (GPS data) acquired by the GPS unit 250 is transmitted from the communication unit 240 to the information processing device 100. When the mobile terminal 200 functions as a recommendation information display device, the communication unit 240 receives the recommendation information transmitted by the information processing device 100 and displays it on the display of the input / output unit 230.

Next, among the operations of the information processing device 100, the operation of the information processing device 100 when functioning as a hash chain registration device will be described.

First, the initial registration process shown in FIG. 5 is performed based on an operation (input operation) on the input / output unit 130 from the user of the information processing device 100 and a request (registration request) received from the mobile terminal 200. The initial registration process is a process of registering the initial information necessary for generating a new type of hash chain. In this example, in order to facilitate understanding, a case where initial registration for user A is performed will be described.

When the initial registration process is started, the control unit 120 of the information processing apparatus 100 generates type data by the function of the initial registration unit 121 (step S101). Specifically, in step S101, the user A information (example: user A) and the user A identifier (example: X001), which are the type information included in the input operation and the registration request, are combined with the user A type hash chain. Is registered in the storage unit 110 as information for generating the above.

The information may be registered as a hash chain of type A among the hash chains 111 of each type. Further, the type information may not be registered and the type may be determined by the user's identifier. In the present embodiment, the identifiers of the users A to D are X001 to X004, and the mesh codes of the meshes 4 to 6 are A010 to A012, respectively. Further, in the present embodiment, the user identifier is registered as the From address and the mesh code is registered as the To address as information of the hash chain 111.

Next, the control unit 120 registers the initial value “0” in the index value of the hash chain of the registered user A type by the function of the initial registration unit 121 (step S102). When the index value is "0", it indicates that the hash chain is in the initial state (the state in which no data block is registered). That is, in the processes of steps S101 and S102, it can be said that a hash chain (hash chain base information) in which the data blocks are not registered is generated although the data blocks are not connected by a chain.

In this state, since the data blocks are not connected by a chain, there is a problem that the data can be deleted and it cannot be verified that the data has been deleted. Therefore, in order to improve the tamper resistance, a special transaction may be generated for a hash chain selected at random, and a process of concatenating data blocks having an index value of "0" in the chain may be performed.

After executing the process of step S102, the control unit 120 registers the content in the other information processing apparatus 100 by the function of the synchronous processing unit 122 (step S103), and ends the initial registration process. Specifically, in step S103, the contents of the hash chain (base information of the hash chain) of the user A type in the information processing device 100 are transferred to various different hash chains 111 in the storage unit 110 of the other information processing device 100. make a copy. As a result, the hash chain of the user A type (hash chain base information) is shared by all the information processing apparatus 100.

Next, a data block registration process for registering transaction data generated based on received GPS data in a data block of a corresponding type of hash chain will be described with reference to FIG. The data block registration process is executed based on the reception of GPS data transmitted from the mobile terminal 200. In addition, the mobile terminal 200 periodically (for example, once every 30 minutes) based on the program stored in the storage unit 210, the GPS data and the date and time data (the date and time when the GPS data is acquired by the GPS unit 250). Data) is being transmitted to the information processing device 100.

The transaction data is basically generated by the information processing device 100, but is generated and transmitted by the mobile terminal 200 and received by the communication unit 140 or input to the input / output unit 130. You may. In the present embodiment, as described above, one data block is created and registered for one transaction data. Therefore, in the data block registration process, when there are a plurality of transaction data to be registered, the data block registration process is performed. It will be executed repeatedly.

FIG. 6 is a flowchart showing an example of the data block registration process. In this example, in order to facilitate understanding, a data block registration process when GPS data including the longitude and latitude in the mesh 5 is received from the mobile terminal 200A of the user A (from the state of FIG. 7A to (B)). When transitioning to the state of) will be described.

Upon receiving the GPS data including the longitude and latitude in the mesh 5 transmitted from the mobile terminal 200A of the user A, the information processing apparatus 100 starts the data block registration process by the function of the data block registration unit 123.

When the data block registration process is started, the control unit 120 of the information processing apparatus 100 first generates transaction data based on the received GPS data and date / time data (step S201). In step S201, the control unit 120 functions as a position data acquisition means. Further, step S201 is also called a position data acquisition step.

For example, if the information processing device 100 receives GPS data including the longitude and latitude in the mesh 5 and date and time data of 15:00 on Sunday, July 7 from the mobile terminal 200A, the control unit 120 will perform step S201. , The GPS data is converted into a mesh code using the mesh code conversion data 112, and it is said that "User A is at the place (mesh 5) indicated by the mesh code A011 at 15:00 on Sunday, July 7". Generate transaction data that represents the content (transaction).

Next, it is determined by the function of the synchronization processing unit 122 whether or not the target hash chain in the information processing device 100 and the target hash chain in the other information processing device 100 are synchronized (step S202). .. Specifically, in the process of step S202 in this example, the index value and hash value of the latest data block included in the hash chain of the user A type among the hash chains 111 of each type, and the hash of the mesh 5 type. By determining whether the index value and hash value of the latest data block included in the chain are the same as those stored in all the other information processing devices 100, it is determined whether or not they are synchronized. judge.

Explaining with reference to the example shown in FIG. 7A, among the hash chains 111 of each type of the information processing device 100 (meaning the information processing device 100 that has received transaction data, the same applies hereinafter), the user A The data block with the index value "N-1" is registered as the latest data block in the hash chain, and the data block with the index value "Z-1" is registered as the latest data block in the hash chain of mesh 5. It is registered. As shown in the figure, the hash chain data block (mth data block) in the present embodiment includes the registered data (transaction data) and the data block at the end (one before) of the current hash chain (one before). The point that the hash value (256 bits) of the m-1th data block) is included is the same as the conventional blockchain mechanism. Further, the data block includes, for example, additional data for analysis such as a time stamp indicating the date and time when the registered data was registered in the data block (not shown), which is the same as the conventional blockchain mechanism. is there.

In the process of step S202 of FIG. 6, the index value "N-1" and the hash value of the N-1 and the index value "Z-1" and the hash value of the Z-1 are all other information processing devices. By determining whether or not it matches what is stored in 100, it is determined whether or not it is synchronized. For example, when the information processing device 100 in which the index value "N" and the hash value of the N are stored exists, the hash chain information of the user A type stored in the information processing device 100 is old. Is determined. Similarly, when there is an information processing device 100 in which the index value "Z" and the hash value of the Z are stored, the hash chain information of the mesh 5 type stored in the information processing device 100 is stored. Judge as old.

On the other hand, when the information processing device 100 in which the index value "N-2" and the hash value of the N-2 are stored exists, the hash chain of the type of user A stored in the information processing device 100. Judges that the information in is out of date. Similarly, if there is an information processing device 100 in which the index value “Z-2” and the hash value of the Z-2 are stored, the hash of the mesh 5 type stored in the information processing device 100 is available. Judge that the chain information is out of date.

When not synchronized (step S202; No), the control unit 120 copies the contents of the latest hash chain to the information processing device 100 in which the hash chain determined to be old is registered by the function of the synchronization processing unit 122. Synchronous processing is executed (step S203). In the process of step S203, the entire hash chain may be copied, or only the missing data blocks (including the index value and the hash value) may be copied.

When it is determined in step S202 that synchronization is performed (step S202; Yes), or when the process of step S203 is executed, the control unit 120 stores data blocks having the same registered data in the target hash chain, respectively. Add (step S204). As described above, when adding a new data block (mth data block) to the hash chain, the registered data (transaction data) and the data block at the end (one before) of the current hash chain (first data block). The point that the hash value (256 bits) of the m-1 data block) is stored in the data block and connected to the data block (the previous m-1 data block) at the end (one before) of the current hash chain is It is the same as the conventional blockchain mechanism.

Specifically, in the process of step S204, as shown in FIG. 7B, the data block having the index value “N” is connected to the data block having the index value “N-1” in the hash chain of the user A type. At the same time, the data block having the index value "Z" is connected to the data block having the index value "Z-1" in the hash chain of the mesh 5 type.

Each concatenated data block contains the same transaction data. Specifically, the content indicating that the user A is (To: A011) in the (From: X001) mesh 5 is registered. As shown, the From address and To address indicate which mobile terminal 200 user is on which mesh. The hash value of N-1 is stored in the data block of the index value "N" in the hash chain of the user A type, and the data block of the index value "Z" in the hash chain of the mesh 5 type contains. The hash value of Z-1 is stored. As described above, the information processing apparatus 100 in the present embodiment adds the same transaction data to each corresponding hash chain.

Returning to FIG. 6, after executing the process of step S204, the control unit 120 registers the hash chain of the type to which the data block is added in step S204 to the other information processing device 100 by the function of the synchronous processing unit 122. As a result, after synchronizing the information processing device 100 with the other information processing device 100 (step S205), the data block registration process is terminated.

In the process of step S205, the contents of the hash chains of the user A and the mesh 5 types in the information processing device 100 are copied to various different hash chains 111 in the storage unit 110 of the other information processing device 100. Further, in the process of step S205, the entire hash chain may be copied, or only the missing data block (including the index value and the hash value) may be copied, as in the process of step S203.

In this way, every time the information processing device 100 receives GPS data from the mobile terminal 200, the data block registration process shown in FIG. 6 is performed, and the transaction data is registered in the target hash chain. For example, when 7 transaction data are generated as shown in FIG. 8 (A) (8 in the case shown in FIG. 8 (B)), the data block registration process shown in FIG. 6 is performed 7 times ( In the case shown in FIG. 8B, the transaction data is performed eight times), and each transaction data is registered in the target type hash chain. FIG. 9 shows the registration contents of each hash chain when the data block registration process shown in FIG. 6 is performed seven times for the seven transactions shown in FIG. 8 (A). In the example shown in FIG. 9, the hash value and the like stored in each data block are omitted for easy understanding.

Specifically, the transaction data representing the first content (transaction) of FIG. 8 (A) "User A is in mesh 5 at 15:00 on Sunday, July 7" is shown in FIG. By performing the data block registration process, the data blocks are registered in the data block (1) in the hash chain of the user A type and the data block (1) in the hash chain of the mesh 5 type shown in FIG. The transaction data representing the third content (transaction) of "User A is in mesh 6 at 15:30 on Sunday, July 7" in FIG. 8 (A) is the data block registration process shown in FIG. Is registered again in the data block (2) in the hash chain of the user A type and the data block (1) in the hash chain of the mesh 6 type shown in FIG.

Then, the transaction data representing the second content (transaction) of "User B is in mesh 4 at 15:00 on Sunday, July 7" in FIG. 8 (A) is the data block shown in FIG. By performing the registration process again, the data is registered in the data block (1) in the hash chain of the user B type and the data block (1) in the hash chain of the mesh 4 type shown in FIG. The transaction data representing the fourth content (transaction) of FIG. 8 (A) "User B is in mesh 5 at 15:30 on Sunday, July 7" is the data block registration process shown in FIG. Is registered again in the data block (2) in the hash chain of the user B type and the data block (2) in the hash chain of the mesh 5 type shown in FIG.

By performing the data block registration process for the number of times corresponding to the number of transactions in this way, each transaction data is concatenated to the corresponding type of hash chain (transaction data of the fifth and subsequent transactions in FIG. 8A). The same applies to).

The above is the operation of the information processing device 100 when it functions as a hash chain registration device. The hash chain 111 of the user type is called behavior history data because it is data indicating the behavior history of the user. In the data block registration process (FIG. 6), the control unit 120 functions as an action history data storage means. The data block registration process is also called an action history data storage step. Subsequently, the operation of the information processing device 100 when functioning as the behavior evaluation device will be described with reference to FIG.

FIG. 10 is a flowchart showing an example of the behavior evaluation process. The behavior evaluation process is started when the communication unit 140 receives instructions such as behavior evaluation and recommendations transmitted from the mobile terminal 200. For instructions such as behavior evaluation and recommendation, the user of the mobile terminal 200 inputs the instruction from the input / output unit 230, and the GPS data and date / time data (the GPS data is the GPS data) acquired from the mobile terminal 200 by the GPS unit 250. It is transmitted to the information processing apparatus 100 together with the data of the date and time when it was acquired).

The behavior evaluation process is for extracting behavior history data from the hash chain 111 of the user type and evaluating whether the current behavior of the user of the mobile terminal 200 is a normal behavior or a special behavior. It is a process.

In this embodiment, a case where the hash chain of the user type is registered for several days to several months by the data block registration process shown in FIG. 6 will be described as an example. If the hash chain is registered for less than a few days, proper behavior evaluation cannot be performed. In that case, an error is returned to the mobile terminal 200 (for example, before the process of step S301) and evaluation is not possible. The process may be terminated as.

When the behavior evaluation process is started, the control unit 120 of the information processing device 100 acquires real-time position data of the mobile terminal 200 based on the GPS data transmitted from the mobile terminal 200 that has received the instruction (step S301). Specifically, the instruction such as behavior evaluation transmitted by the mobile terminal 200 includes the real-time GPS data and the date and time data of the mobile terminal 200 at that time, and the control unit 120 receives the instruction by the communication unit 140. A mesh code is acquired from the GPS data using the mesh code conversion data 112.

Next, the control unit 120 sets the extraction condition from the hash chain 111 based on the date and time data transmitted from the mobile terminal 200 together with the GPS data (step S302). For example, if the date and time data transmitted from the mobile terminal 200 is "July 8 (Monday) 7:00", the extraction condition is "weekday morning time zone". If the date and time data is "July 14 (Sunday) 14:00", the extraction condition is "Sunday afternoon time zone". Here, the time zone is, for example, n hours before and after the time when the instruction for behavior evaluation is received (for example, n = 1).

Note that this extraction condition is only an example, and weekdays may not be treated collectively, but may be subdivided by day of the week, Saturdays, Sundays, and holidays may be treated as holidays, and months and seasons may be taken into consideration. Or, it may be extracted from the n weeks before and after (for example, n = 6), or it may be extracted from the recent n weeks (for example, n = 3).

Next, the control unit 120 extracts transaction data of a data block that meets the extraction conditions based on the extraction conditions set in step S302 by the function of the data acquisition unit 124 (step S303).

Then, the control unit 120 compares the transaction data (extracted data) extracted in step S303 with the real-time position data (current mesh code) of the mobile terminal 200 acquired in step S301, and the user of the mobile terminal 200 It is determined whether the action of is a normal action or a special action (step S304).

Specifically, this determination is made when the current mesh code exists in the mesh code group included in the extracted data and the ratio is high, or when the mesh code group has a mesh code close to the current mesh code and the distance is close. When the ratio is high (step S304; Yes), the control unit 120 evaluates the behavior of the user of the mobile terminal 200 as "normal behavior" (step S305), and ends the behavior evaluation process.

On the contrary, if the current mesh code does not exist in the mesh code group included in the extracted data, or if the current mesh code exists but the ratio is low, and the mesh code group does not have a mesh code close to the current mesh code. Or, if the ratio is low even if it exists (step S304; No), the control unit 120 evaluates the behavior of the user of the mobile terminal 200 as a "special behavior" (step S306), and ends the behavior evaluation process. ..

If the instruction received from the mobile terminal 200 when executing the behavior evaluation process is "behavior evaluation", the evaluated behavior ("normal behavior" or "special behavior") is performed after step S305 or step S306. May be transmitted to the mobile terminal 200.

The behavior evaluation process has been described above. In the behavior evaluation process (FIG. 10), the control unit functions as a behavior evaluation means. The behavior evaluation process is also called a behavior evaluation step.

A specific example of the behavior evaluation process will be described with reference to FIG. First, FIG. 11 shows an example in which the instruction of "behavior evaluation" is transmitted from the mobile terminal 200C to the information processing apparatus 100 at 7:15 on July 2 (Tuesday) when the user C of the mobile terminal 200C is on the mesh 8. This will be described with reference to (A). In this case, in step S301, A022, which is the mesh code of the mesh 9, is acquired as position data (current mesh code). Then, in step S302, for example, "6: 15-8: 15 on weekdays" is set as the extraction condition.

Then, in step S303, transaction data (extracted data A) conforming to "6: 15-8: 15 on weekdays" is extracted from the hash chain 111 of the user C type. In the example of FIG. 11A, the current mesh code A022 is included in the mesh code group (A002, A022, etc.) included in the extraction data A, and the ratio is high (in the example of FIG. 11 the mesh). Since 75% of the code group is A022), the determination in step S304 is Yes, and the current behavior of user C is evaluated as "normal behavior".

Next, an example in which the instruction of "behavior evaluation" is transmitted from the mobile terminal 200C to the information processing apparatus 100 at 15:45 on July 7 (Sun) when the user C of the mobile terminal 200C is in the mesh 4 is shown. This will be described with reference to FIG. 11 (B). In this case, in step S301, A010, which is the mesh code of the mesh 4, is acquired as position data (current mesh code). Then, in step S302, for example, "Sunday 14:45 to 15:45" is set as the extraction condition.

Then, in step S303, transaction data (extracted data B) conforming to "Sunday 14:45 to 15:45" is extracted from the hash chain 111 of the user C type. In the example of FIG. 11B, the current mesh code A010 is not included in the mesh code group (A022, etc.) included in the extracted data B, and the mesh code (A000) is close to A010. , A020, A011, etc.) are not included in the mesh code group included in the extracted data B, so the determination in step S304 is No, and the current action of user C is evaluated as "special action". To.

In the above description, it is assumed that the transaction data includes "user, date and time, position data". However, the information contained in the transaction data is not limited to these, for example, environmental information around the user of the mobile terminal 200 such as weather, temperature, humidity, and the age, gender, nationality of the user of the mobile terminal 200. , Hobbies and other profile information of the user may be included. In this case, these pieces of information are transmitted from the mobile terminal 200 to the information processing device 100 together with the GPS data and the date and time data.

When the transaction data includes such environment information and profile information, in step S302 of the behavior evaluation process (FIG. 10), the extraction condition includes the environment information around the user of the mobile terminal 200 at that time and the environment information around the user. The profile information of the user may be included in the extraction condition. At that time, the extraction conditions do not have to be exactly the same, and may have a certain range. For example, if the behavior evaluation instruction was received at 14:00 on Sunday, July 14, the weather was fine and the temperature was 30 degrees, the extraction condition was "Sunday when the weather was fine and the temperature was around 30 degrees." It will be the time zone after noon. Here, "sunny" may include, for example, "fine weather", and "temperature around 30 degrees" may include, for example, "temperature 28 degrees or more and 32 degrees or less".

Further, in the above-mentioned behavior evaluation process, the behavior history data is extracted using the real-time date and time data of the user of the mobile terminal 200, and the behavior of the user is normal behavior by comparing the behavior history data with the real-time position data. We evaluated whether it was a special behavior or not, but this is just an example of the behavior evaluation process. In the behavior evaluation process, the behavior may be evaluated using the latest behavior history data instead of the user's real-time data. In this case, it is possible to evaluate the behavior by generating the average daily behavior history data from the past daily behavior history data and comparing it with the latest behavior history data. For example, if the matching rate between the average behavior history data and the latest behavior history data matches the threshold value (for example, 70%) or more, it is evaluated as normal behavior, and if it matches less than the threshold value, it is evaluated as special behavior. be able to.

The behavior evaluation process has been described above. If the instruction received from the mobile terminal 200 when executing the behavior evaluation process is "recommendation", the information processing apparatus 100 executes the recommendation process following the above-mentioned behavior evaluation process (FIG. 10).

FIG. 12 is a flowchart showing an example of the recommendation process. The recommendation process is executed following the action evaluation process by receiving the recommendation instruction from the mobile terminal 200 on the communication unit 140. The recommendation processing uses information on whether the behavior of the user of the mobile terminal 200 is a normal behavior or a special behavior, and the behavior history data obtained from the hash chain 111, to determine the future destination of the user. This is a process for estimating and providing recommendation information to the user.

Similar to the behavior evaluation process, in the present embodiment, a case where the hash chain as shown in FIG. 9 is registered for several days to several months by the data block registration process shown in FIG. 6 will be described as an example. If the hash chain is registered for less than a few days, proper recommendation processing cannot be performed. In that case, an error is returned to the mobile terminal 200 (for example, before the processing in step S401), and recommendation is not possible. The process may be terminated as.

When the recommendation process shown in FIG. 12 is started, the control unit 120 of the information processing device 100 determines whether or not the evaluation result in the previously performed action evaluation process (FIG. 10) is a normal action (step S401). .. If it is a normal action (step S401; Yes), the control unit 120 estimates the next action of the user from the action history data of the user (step S402). Specifically, among the transaction data extracted in step S303 of the behavior evaluation process (FIG. 10), the mesh code included in the transaction data after the current time is estimated to be the next destination of the user. .. In step S402, the control unit 120 functions as an action estimation means.

Then, among the information related to the mesh code estimated to be the next destination (destination mesh code), the information considered to be useful during normal behavior (for example, used when moving to the place indicated by the destination mesh code). (Transportation delay information, etc.) is acquired as recommendation information and registered in the hash chain 111 of the destination mesh code type (step 403). In step S403, the control unit 120 functions as a recommendation information acquisition means.

On the other hand, if the evaluation result in the behavior evaluation process (FIG. 10) performed earlier is not a normal behavior (step S401; No), the control unit 120 uses the behavior history data of a user other than the user to obtain the behavior history data of the user. The next action is estimated (step S404). Specifically, the hash chain 111 of all user types other than the user is subjected to the same extraction process as in step S303 of the behavior evaluation process (FIG. 10), and among the transaction data extracted by the extraction process. The mesh code of the next time zone connected to the transaction data including the current mesh code is collected, and the mesh code having the highest ratio among the collected mesh codes is estimated to be the next destination of the user.

Then, among the information on the mesh code estimated to be the next destination (destination mesh code), the information considered to be useful during special actions (for example, sightseeing existing in the vicinity of the place indicated by the destination mesh code). (Spot information, etc.) is acquired as recommendation information and registered in the hash chain 111 of the type of the destination mesh code (step 405). In step S405, the control unit 120 also functions as a recommendation information acquisition means.

Regardless of the determination in step S401, the control unit 120 then transmits the selected recommendation information from the communication unit 140 to the user's mobile terminal 200 (step S406). In step S406, the control unit 120 functions as an information providing means. Then, it waits for the feedback information from the user's mobile terminal 200, receives the feedback information when it is transmitted, registers it in the hash chain 111 of the type of the destination mesh code (step S407), and ends the recommendation process. .. In step S407, the control unit 120 functions as a feedback acquisition means.

The feedback information refers to the usefulness of the recommendation information, such as whether the recommendation information transmitted to the mobile terminal 200 is viewed by the user of the mobile terminal 200, whether the user likes or needs the recommendation information, and the like. Information to be evaluated. This feedback information is added as additional data to the transaction data in which the From address is the user's identifier and the To address is the destination mesh code, and is registered in the hash chain 111 of the type of the destination mesh code.

In step S403 and step S405 of the recommendation process (FIG. 12), when the recommendation information is acquired, the feedback information registered in the hash chain 111 of the destination mesh code type is used, and the evaluation by the user is high. The recommendation information may be obtained preferentially.

In the above-mentioned recommendation process (FIG. 12), the estimation of the user's behavior in steps S402 and S404 was the estimation of the user's movement destination, but the estimation is not limited to this. For example, the behaviors (for example, "playing at an amusement park", "commuting to a company", "staying at a hotel", etc.) that the past user has performed at the destination may be estimated by using the above feedback information or the like. By estimating the details of the behavior as well as the destination, the information processing apparatus 100 can provide more appropriate recommendation information.

A specific example of the recommendation process will be described with reference to FIG. Here, the state in which the recommendation information is provided to the user C in the situation described with reference to FIG. 11B will be described. In FIG. 11, only the hash chain 111 of the user C type is shown among the transaction data registered in the hash chain 111, but in FIG. 13, the hash chain 111 of the user A type and the type of the user B are shown. Hashchain 111 of is also shown.

In the situation described in FIG. 11B, the action of the user C was evaluated as a "special action". Therefore, in step S401 of the recommendation process (FIG. 12), the determination was No, and in step S404, other than user C. The behavior is estimated from the user's behavior history data. Here, it is assumed that the users other than the user C are the user A and the user B. Then, in step S404, first, the extraction data C is obtained by performing the same extraction process as in step S303 of the behavior evaluation process (FIG. 10) on the hash chain 111 of the user type other than the user C.

Then, when the transaction data including the current mesh code is searched from the extracted data C, a data block (337) having a From address of X002, a To address of A010, and a date and time of 15:00 on June 30 (Sun) can be found. Then, the transaction data in the next time zone connected to this transaction data is a data block from the hash chain 111 of the user B type, with the From address X002, the To address A011, and the date and time June 30 (Sun) 15:30. It turns out that it is (338). The next destination of user C estimated based on this transaction data is the location indicated by the mesh code A011.

In the example shown in FIG. 13, since transaction data including the current mesh code (A010) does not exist in the extracted data C, the estimated location as the next destination of the user C is To with the From address X002. Based on the data block (338) whose address is A011 and whose date and time is 15:30 on June 30 (Sun), the location indicated by the mesh code A011 is determined.

Since the determination in step S401 is No, then in step S405, the control unit 120 acquires the recommendation information regarding the location indicated by the mesh code A011 based on the special action. For example, information on tourist spots (sightseeing spot information) near the place indicated by mesh code A011 is acquired as recommendation information, and data block 1204 of the hash chain 111 of the type of mesh code A011 (mesh 5). This tourist spot information is registered in.

Then, in step S406, the control unit 120 transmits this tourist spot information to the mobile terminal 200C. Next, in step S407, the control unit 120 receives the feedback information for the tourist spot information from the user C transmitted from the mobile terminal 200C, and the data block of the hash chain 111 of the type of mesh code A011 (mesh 5). Register at 1205. In the example of FIG. 13, the user C means that the tourist spot information was useful, and the feedback information is Good.

If the behavior evaluation result is normal behavior, the behavior history data that is the extraction source will be the transaction data of the user himself, and the recommendation information will be information for normal behavior (for example, delay information of transportation). Is different, so detailed description of specific examples will be omitted.

As described above, the information processing apparatus 100 evaluates whether the user's behavior is a normal behavior or a special behavior based on the transaction data stored on the block, and determines the subsequent movement destination of the user. Recommendation information can be provided to the user based on the estimated and estimated destination and the evaluated behavior. Therefore, the information processing apparatus 100 can suitably utilize the transaction data stored on the block.

In the above-described embodiment, the mobile terminal 200 transmits GPS data, and the information processing device 100 generates transaction data based on the GPS data. However, it is not limited to this. For example, the mobile terminal 200 stores mesh code conversion data (data similar to the mesh code conversion data 112 of the information processing device 100) in the storage unit 210, the mobile terminal 200 generates transaction data, and the information processing device. The transaction data may be transmitted to 100.

Further, in the recommendation process (FIG. 12), the process of step S407 is not essential. When the feedback information from the user is not required, it is not necessary to perform the process of step S407. In this case, even in the specific example described with reference to FIG. 13, the data block (1205) of the hash chain 111 of the mesh 5 type is not registered. Further, in this case, it is not necessary to register the recommendation information in step S403 or step S405 in the hash chain 111. In that case, the data block (1204) of the hash chain 111 of the mesh 5 type does not have to be registered even in the specific example described with reference to FIG.

The information processing device 100 includes, as a control unit 120, dedicated hardware such as an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or various control circuits instead of the CPU, and is dedicated. The hardware may function as each part shown in FIG. In this case, the functions of each part may be realized by individual hardware, or the functions of each part may be collectively realized by a single hardware. Further, some of the functions of each part may be realized by dedicated hardware, and the other part may be realized by software or firmware.

A program that realizes each function of the information processing apparatus 100 is stored and applied to a computer-readable storage medium such as a flexible disk, a CD (Compact Disc) -ROM, a DVD (Digital Versaille Disc) -ROM, or a memory card. You may. Further, the program may be superimposed on the carrier wave and applied via a communication medium such as the Internet. For example, the program may be posted on a bulletin board system (BBS: Bulletin Board System) on a communication network for distribution. Then, under the control of the OS (Operating System), a program that realizes each function of the information processing device 100 is started and executed in the same manner as other application programs, so that the above processing can be executed. May be good.

Further, when the above-mentioned functions are realized by sharing the OS and the application or cooperating with the OS and the application, only the part other than the OS may be stored in the storage medium.

1 Information processing system, 100, 100A to C information processing device, 110, 210 storage unit, 111 hash chain of each type, 112 mesh code conversion data, 120, 220 control unit, 121 initial registration unit, 122 synchronization processing unit, 123 data block registration unit, 124 data acquisition unit, 125 behavior evaluation unit, 126 recommendation processing unit, 130, 230 input / output unit, 140, 240 communication unit, 200, 200A to D mobile terminal, 250 GPS unit, 300 network

Claims (8)

A location data acquisition means for acquiring the location data of a user carrying a mobile terminal together with date and time data,
An action history data storage means that stores the position data and the date and time data acquired by the position data acquisition means as the action history data of the user in a data block connected by a hash chain constructed in the network.
An action evaluation means for evaluating whether the user's action is a normal action or a special action using the action history data stored in the action history data storage means, and
To prepare
Information processing device. In addition to the action history data stored in the action history data storage means, the action evaluation means also uses the current position data acquired by the position data acquisition means to determine whether the user's action is a normal action. Evaluate whether it is an action,
The information processing device according to claim 1. The behavior evaluation means evaluates whether the user's behavior is a normal behavior or a special behavior by using the information of the day of the week obtained from the current date and time data acquired by the position data acquisition means.
The information processing device according to claim 1 or 2. When the behavior of the user is evaluated as a normal behavior by the behavior evaluation means, the behavior of the user is estimated based on the behavior history data of the user, and the behavior of the user is a special behavior by the behavior evaluation means. A behavior estimation means for estimating the behavior of the user based on the behavior history data other than the user when evaluated to be present.
The information processing device according to any one of claims 1 to 3. Further, a recommendation information acquisition means for acquiring the recommendation information provided to the user based on the behavior of the user estimated by the behavior estimation means, and
An information providing means for providing the recommended information acquired by the recommended information acquiring means to the user.
The information processing device according to claim 4. Further, the information providing means includes a feedback acquisition means for acquiring feedback information from the user after the recommendation information is provided to the user.
The recommendation information acquisition means acquires the recommendation information provided to the user based on the feedback information acquired by the feedback acquisition means.
The information processing device according to claim 5. The location data acquisition step to acquire the location data of the user who carries the mobile terminal together with the date and time data,
The action history data storage step of storing the position data and the date and time data acquired in the position data acquisition step as the user's action history data in a data block connected by a hash chain constructed in the network, and
An action evaluation step for evaluating whether the user's action is a normal action or a special action using the action history data stored in the action history data storage step, and
To be equipped.
Information processing method. Computer,
Location data acquisition means that acquires the location data of the user who carries the mobile terminal together with the date and time data,
An action history data storage means that stores the position data and the date and time data acquired by the position data acquisition means as the action history data of the user in a data block connected by a hash chain constructed in the network.
A behavior evaluation means for evaluating whether the user's behavior is a normal behavior or a special behavior using the behavior history data stored in the behavior history data storage means.
A program to function as.

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