JP2016035679A - Poi data creation device, terminal device, poi data creation method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to create POI data for constructing a POI database that reflects information on a place at present accurately in real time without troublesomeness in maintenance.SOLUTION: A POI data creation device includes: a terminal position information acquisition part (45) that acquires information related to a place extracted from schedule information (SC) for a terminal (2) and point information on the terminal measured when the terminal (2) is present at the place, as a plurality of pieces of terminal position information (S1); and a POI creation part (52) that creates POI (Point Of Interest) data for specifying a place on the basis of the information on the place and the point information included in the plurality of pieces of terminal position information (S1).SELECTED DRAWING: Figure 1

Description

  The present invention relates to a POI data generation device, a terminal device, a POI data generation method, and a program, and in particular, POI (Point Of Interest) data (hereinafter referred to as “POI data”) that is a specific place in which someone is interested. The present invention relates to a POI data generation device, a POI data generation method, a program, and a terminal device.

  Conventionally, POI data is generated mainly by the following procedure. First, when the terminal device acquires a latitude / longitude indicating the current position of the terminal device (hereinafter, “latitude / longitude indicating the current position of the terminal device” is referred to as “point information”) by the GPS module, Corresponding place name and place name (hereinafter referred to as “place name”) etc. are input by the user on the terminal device, and the location information including the point information and the place name is transmitted from the terminal device to the server. To do.

  The server generates POI data including a place name, point information (latitude and longitude), address, telephone number, and descriptive text based on a plurality of pieces of position information received from a plurality of terminal devices, and uses this as one record for POI data. Register in the database. At the time of construction and management of this POI database, an administrator manually inputs or changes input contents.

  In addition, the location information of the terminal device is transmitted to the server, and the server performs statistical processing on the stay time of the terminal device at the facility on the electronic map based on the location information, and statistically compares it with past data. There has been proposed a changing facility determination system that determines a facility that has changed in time as a facility whose service form has changed, and updates data on a map corresponding to the facility (see, for example, Patent Document 1).

JP 2010-238004 A

  However, when the POI database is constructed and managed, the administrator of the POI database was handled manually, so even when it is determined that the service form has been changed by the technique of Patent Document 1, at that time The administrator has to manually input data such as a place name, and the maintenance work by the administrator is complicated.

  In addition, when the maintenance work by the administrator is delayed, the contents of the POI database are not updated to the latest state, so that there is a problem that the user of the POI database acquires information before the change of the location (facility). It was.

  The present invention has been made in view of the above-described conventional problems, and its purpose is to provide a high accuracy for constructing a POI database that accurately reflects real-time information on a location without complicated maintenance. Another object of the present invention is to provide a POI data generation device, a terminal device, a POI data generation method, and a program for generating highly reliable POI data.

  In order to achieve this object, in the POI data generation device according to the present invention, information related to the location extracted from schedule information (SC) in which information related to time and information related to location are associated with each other, A terminal position information acquisition unit (45) that acquires a plurality of pieces of point information of the terminal device (2) measured at the time specified by the information about time as terminal position information (S1); and a plurality of the terminal position information ( And a POI generation unit (52) that generates POI (Point Of Interest) data in which the location information and the location information are associated based on the location information and the location information included in S1).

  In the present invention, the POI generation unit (52) determines the terminal location information determined based on the point information that the terminal device (2) stays in the place set by the schedule information (SC). POI data may be generated using (S1).

  In the present invention, the POI generation unit (52) includes a plurality of terminal position information (S1) clustered based on the point information, wherein the number of terminal position information (S1) to which the POI generation unit (52) belongs is less than a predetermined threshold. POI data may be generated using other terminal position information (S1) excluding terminal position information (S1) included in a large cluster.

  In the present invention, the POI generation unit (52) may generate POI data using terminal position information (S1) including point information in which error information included in the point information is smaller than a predetermined threshold. Good.

  In the present invention, the POI generation unit (52), when the terminal location information (S1) having the same information regarding the location reaches a predetermined number, the predetermined number of terminal location information (with the same information regarding the location) ( The POI data may be generated using S1).

  In the present invention, the POI generation unit (52) is configured to provide an X% confidence interval (X is a rational number greater than 0 and smaller than 100) for a plurality of pieces of point information respectively corresponding to the predetermined number of terminal position information (S1). POI data may be generated using a plurality of pieces of terminal position information (S1) corresponding to a plurality of pieces of point information included in.

  In the present invention, the POI generator (52) performs hierarchical clustering on the plurality of terminal location information (S1) included in the X% confidence interval, and when clustered into a plurality of clusters, A plurality of POI data corresponding to each cluster may be generated.

  In the terminal device according to the present invention, a positioning unit (25) for positioning point information indicating its current position, and a storage unit (SC) for storing schedule information (SC) in which information about time and information about place are associated with each other. 22), information regarding the location read out from the schedule information (SC), and information regarding the time associated with the information regarding the location in the schedule information (SC), the positioning unit A terminal position information generation unit (32) that generates terminal position information (S1) in association with the location information measured by (25), and transmission that transmits the terminal position information (S1) to the server (7) Part (24).

  In the present invention, the terminal device (2) comprises a control unit (21) for determining whether or not the terminal device (2) is staying in the place set in the schedule information (SC), the transmission unit (24), Terminal position information (S1) corresponding to the point information when it is determined that the terminal device (2) stays at the place set in the schedule information (SC) is transmitted to the server (7). You may make it do.

  In the present invention, the control unit (21) includes a cluster in which the number of terminal position information (S1) belonging to the plurality of terminal position information (S1) clustered based on the point information is greater than a predetermined threshold. A determination unit (34) for determining terminal location information included in the terminal and other terminal location information excluding the terminal location information, and the transmission unit (24) uses the determination unit (34) to determine the cluster. The other terminal position information that is not included in the information may be transmitted to the server (7).

  In the present invention, the control unit (21) obtains terminal position information (S1) including point information in which error information included in the point information when positioning is performed by the terminal device (2) is smaller than a predetermined threshold. You may make it transmit to the said server (7).

  In the POI data generation method according to the present invention, information related to the location extracted from the schedule information (SC) of the terminal device (2) and the location determined when the terminal device (2) exists at the location. A terminal location information acquisition step of acquiring a plurality of pieces of point information of the terminal device (2) as terminal location information (S1) by the terminal location information acquisition unit (45), and the location included in the plurality of terminal location information (S1) And a POI generation step of generating POI (Point Of Interest) data for specifying the location by the POI generation unit (52) based on the information on the point and the point information.

  In the program according to the present invention, information relating to the location extracted from the schedule information (SC) of the terminal device (2) to the computer, and the location determined when the terminal (2) exists at the location. Based on the terminal location information acquisition step of acquiring a plurality of pieces of point information of the terminal device (2) as terminal location information (S1), the information on the place included in the plurality of terminal location information (S1), and the point information And a POI generation step for generating POI (Point Of Interest) data for specifying the location.

  According to the present invention, the terminal information of the terminal device (2) measured at the time specified by the information related to the time included in the schedule information (SC) and the information related to the place included in the schedule information (SC) are transmitted to the terminal. By obtaining the location information (S1) and associating the location information with the location information based on the location information and location information included in the plurality of terminal location information (S1), the accuracy and reliability are further improved. POI data can be generated.

  In the present invention, the POI generation unit (52) further obtains the terminal position information (S1) determined based on the point information that the terminal device (2) is staying in the place set by the schedule information (SC). By using this to generate POI data, it is possible to generate highly reliable POI data using the terminal position information (S1) when the terminal device (2) actually exists at the location. .

  In the present invention, the POI generation unit (52) further has the number of terminal position information (S1) to which the POI generation unit (52) belongs is larger than a predetermined threshold among the plurality of terminal position information (S1) clustered based on the point information. By generating POI data using other terminal position information (S1) excluding the terminal position information (S1) included in the cluster, the terminal device (2) is not frequently present and is not familiar. It is possible to generate POI data that can be easily recognized by anyone based on the terminal position information (S1) of the place specified by simple expressions.

  In the present invention, the POI generator (52) further generates POI data by using the terminal position information (S1) including point information in which the error information included in the point information is smaller than a predetermined threshold value, thereby generating an error. It is possible to generate highly reliable POI data using terminal position information (S1) including highly accurate point information whose information is smaller than a threshold.

  In the present invention, when the POI generation unit (52) further reaches a predetermined number of pieces of terminal position information (S1) with matching location information, a predetermined number of pieces of terminal location information (S1) with matching location information are obtained. By using this to generate POI data, there is no mixing of terminal location information (S1) that does not match location information, and reliability is based on highly reliable terminal location information (S1) that matches location information. High POI data can be generated.

  In the present invention, the POI generation unit (52) further has an X% confidence interval (X is a rational number greater than 0 and smaller than 100) for a plurality of point information respectively corresponding to a predetermined number of pieces of terminal position information (S1). By generating POI data using a plurality of terminal position information (S1) corresponding to a plurality of terminal position information (S1) corresponding to a plurality of point information included in the point information, the point information far from the most probable point information It is possible to avoid generating POI data based on the terminal position information (S1) corresponding to, and generate highly reliable and highly accurate POI data.

  In the present invention, when the POI generation unit (52) further performs hierarchical clustering on a plurality of terminal location information (S1) included in the X% confidence interval and is clustered into a plurality of clusters, a plurality of clusters When a plurality of pieces of point information corresponding to a plurality of terminal position information (S1) correspond to one building by generating a plurality of POI data corresponding to each, each cluster is included in the one building. It is possible to generate POI data in which the names of the respective locations are associated with each other.

  According to the present invention, a positioning unit (25) for positioning point information indicating its current position, and a storage unit (22) for storing schedule information (SC) in which information about time and information about a place are associated with each other. And positioning by the positioning unit (25) at the time specified by the information on the place read out from the schedule information (SC) and the information on the time associated with the information on the place in the schedule information (SC). By including a terminal position information generation unit (32) that generates terminal position information (S1) in association with point information, and a transmission unit (24) that transmits the terminal position information (S1) to the server (7). , Information about the location when the information about the location is read out from the schedule information (SC) of the terminal device (2), and the terminal device (2) Can transmit the positioning means one terminal position information associated with the point information of the positioning has been the terminal by (25) (S1) when present at that location to the server (7). As a result, in the server (7), the point information of the terminal device (2) measured when the terminal device (2) is present at the location included in the schedule information (SC) is associated with the information regarding the location. The highly reliable POI data with high reliability can be generated based on the terminal location information (S1).

It is a system configuration figure showing the whole POI database construction system composition in a 1st embodiment. It is a block diagram which shows the structure of the terminal device which concerns on 1st Embodiment. It is a figure which shows the software function part by the control means of the terminal device in 1st Embodiment. It is a figure with which it uses for description of the terminal position information which consists of a combination of the place name and point information in 1st Embodiment. It is a figure with which it uses for description of the stay determination using the vector in 1st Embodiment. It is a figure which shows the two-dimensional cluster space by the hierarchical clustering method in 1st Embodiment. It is a figure which shows the three-dimensional cluster space by the hierarchical clustering method in 1st Embodiment. It is a block diagram which shows the structure of the server in 1st Embodiment. It is a figure which shows the software function part by the control means of the server in 1st Embodiment. It is a flowchart which shows the terminal location information transmission processing procedure by the terminal device in 1st Embodiment. It is a flowchart which shows the production | generation and transmission processing procedure of POI data by the server in 1st Embodiment. It is a system configuration figure showing the whole POI database construction system composition in a 4th embodiment. It is a block diagram which shows the structure of the accompanying detection apparatus in 4th Embodiment.

  Embodiments of the present invention will be described below with reference to the drawings.

<Overview>
The POI data generation device according to the present embodiment has a location name included in schedule information described in a calendar of a scheduler that is an application program of a terminal device, and a user of the terminal device according to the time of the schedule information. The location information (latitude and longitude) obtained by the GPS module when moving to is received from a plurality of terminal devices as terminal location information, and the location name and location information (latitude and longitude) are obtained based on the plurality of location information. The combined POI data is generated and used to update the POI database to the latest state.

<First Embodiment>
<Overall configuration of POI database construction system>
FIG. 1 shows the overall configuration of a POI database construction system 1 in the first embodiment.

  This POI database construction system 1 includes a plurality of terminal devices 2 to 4, a base station 5 that wirelessly communicates with the terminal devices 2 to 4, and a server 7 connected to the base station 5 via a network 6 such as the Internet. And a POI database 8 connected to the server 7.

<Terminal device>
The terminal devices 2 to 4 are smartphones equipped with a GPS function, for example. The terminal devices 2 to 4 are not limited to these three devices, and may be a larger number of terminal devices.

  Here, assuming that the terminal devices 2 to 4 have the same configuration, only the configuration of the terminal device 2 will be described for convenience. The terminal devices 2 to 4 are not limited to smartphones, and may be mobile personal computers, game machines, cameras, or the like having the same configuration.

  As shown in FIG. 2 and FIG. 3, the terminal device 2 includes a CPU (Central Processing Unit) and a control unit 21 that performs overall control of each unit, a basic program as a computer program, and various application programs (hereinafter referred to as “applications”). Or the calendar 22 according to the scheduler 31 which is one of the applications, the memory 22 as a storage unit including a semiconductor memory for storing various data such as the profile information of the user of the terminal device 2. A display unit 23 including an LCD or the like for displaying a screen or notifying schedule information, a transmission / reception unit 24 for wireless communication with the base station 5, and a GPS module 25 for positioning the current position (latitude and longitude) of the terminal device 2. It has.

  The terminal device 2 according to the present invention is realized by installing an application in the memory 22 and cooperating various hardware resources of the computer with a basic program or application. Here, the basic program or application may be provided to the terminal device 2 in a state stored in a computer-readable recording medium or storage device, or may be provided to the terminal device 2 via an electric communication line. good.

  As a main functional unit of the terminal device 2, a scheduler 31 for managing a user's schedule by using a calendar in cooperation with various hardware resources of a computer and an application, a name of a place described in the calendar, and a GPS module Terminal position information generation unit 32 that generates terminal position information S1 including point information (latitude and longitude) measured by 25, and the terminal device 2 (user) is scheduled during the scheduled time zone described in the calendar. Residence determination unit 33 for determining whether or not the user has stayed at the place, the place where the name is described in the calendar is a degree of familiarity for the user of the terminal device 2, that is, a place where the familiarity degree is high or low. Error information (accuracy information) included in point information (latitude and longitude) measured by the familiarity degree determination unit 34 and the GPS module 25 for determining whether or not there is ) Based on the GPS error determination unit 35 for determining whether or not to transmit the point information to the server 7, and the transmission unit 36 for transmitting the terminal position information S 1 to the server 7.

<Scheduler configuration>
As shown in FIG. 4, the scheduler 31 allows the user to register the schedule information SC in the calendar CA displayed on the display unit 23 of the terminal device 2, and uses the schedule information SC based on the registered schedule information SC. The schedule management is performed by notifying the display section 23 of the contents of the schedule information SC.

  Here, the schedule information SC registered in the calendar CA can be registered in the storage unit 42 (FIG. 8) of the server 7 instead of being stored in the memory 22 of the terminal device 2, and the scheduler 31 is necessary. Accordingly, the terminal device 2 can download the schedule information SC.

  Here, as the contents of the schedule information SC, for example, Monday 30th June 13:00 to 14:00 time information (information about time) and, for example, "ABC Inc." ) And the purpose (for example, “IP meeting”).

  Therefore, when the current time of the terminal device 2 is 13:00, which is the start time of the schedule information SC, the scheduler 31 displays the contents of the schedule information SC on the display unit 23, thereby indicating the schedule contents to the user. Notice.

<Configuration of stay determination unit>
The stay determination unit 32 causes the terminal device 2 (user) to move to the location of the schedule information SC (“ABC Corporation”) in the time zone represented by the time information (13: 0 to 14:00) of the schedule information SC. It is determined whether or not it has stayed (present).

  In general, even if the schedule is set to 13: 00-14: 00, the terminal device 2 (user) may arrive a little later than that time zone, or may arrive a little earlier than that time zone. is there. In addition, the terminal device 2 (user) may remain in the place after the time zone, or may move from the location before the time zone ends.

  Therefore, the stay determination unit 32 identifies the stay time zone in which the terminal device 2 (user) stayed at a certain location in the range before and after the time zone represented by the time information of the schedule information SC, and the stay If the time zone matches, partially matches, or overlaps with the time zone represented by the time information obtained from the schedule information SC, the target “IP meeting” is the place (“ABC Corporation”). It is determined that it has been done.

  Specifically, the stay determination unit 32 determines the location information (for example, latitude (35.66abcd), longitude (for example, latitude) determined by the GPS module 25 at the time corresponding to the time information (13: 0 to 14:00) of the schedule information SC. 139.73abcd)) to generate vectors ag as shown in FIG.

  In this case, a vector a indicating the moving distance and moving direction from the 13:00 point to the 13:10 point, and a vector b indicating moving distance and moving direction from the 13:10 point to the 13:20 point. : Vector c indicating the moving distance and moving direction from the point of 20 to the point of 13:30, vector d indicating moving distance and direction from the point of 13:30 to the point of 13:40, point of 13:40 Vector e indicating the moving distance and moving direction from 1 to 13:50, vector f indicating the moving distance and moving direction from 13:50 to 14:00, and 14:10 from 14:00 It is assumed that the vector g indicates the movement distance and movement direction to the point.

  The stay determination unit 32 calculates an inner product of a vector and the previous vector among the vectors a to g, and extracts two vectors whose calculation results are smaller than a predetermined threshold. Two vectors smaller than these thresholds indicate that the terminal device 2 has hardly moved.

  For example, the stay determination unit 32 is a stay time zone (13:20 to 14:00) associated with vectors c and d, vectors d and e, and vectors e and f whose inner product is smaller than a predetermined threshold. Thus, it can be determined that the terminal device 2 (user) has stayed at a location within the range represented by those vectors.

  Therefore, the stay determination unit 32 calculates the central point of the plurality of pieces of point information acquired by the GPS module 25 during the determined stay time period (13: 20-14: 00), and uses the point information of the central point as the terminal position. It remains as a generation candidate of information S1. That is, the spot information acquired at a timing other than the staying time zone (13:20 to 14:00) is excluded from the generation candidates of the terminal position information S1.

  The stay determination unit 32 compares the calculation result of the inner product of the two vectors with a predetermined threshold, and determines that the stay is present when an inner product smaller than the threshold is obtained. However, the present invention is not limited to this. In addition to the inner product of the two vectors, the stay may be determined when the angle of the two vectors becomes smaller than a predetermined threshold angle.

  This is because when the terminal device 2 is not staying, the angle between the two vectors is likely to be larger, for example, closer to 180 degrees (in the case of the vectors a and b). This is because there is a high possibility that the angle in between is a small angle of 90 degrees or less, for example.

<Configuration of familiarity determination unit>
The familiarity determination unit 33 determines whether the place represented by the point information measured by the GPS module 25 is a place where the degree of familiarity for the user of the terminal device 2 is high or low.

  Here, the “degree of familiarity” is an index indicating whether or not the place is familiar to the user of the terminal device 2. For example, “home” or “workplace” is a familiar place for the user of the terminal device 2, whereas a travel destination “sightseeing spot” or a famous “restaurant” place to go for the first time. Is considered a less familiar place.

  Therefore, the familiarity level determination unit 33 determines that the location corresponding to the spot information included in the terminal position information S1 left as a generation candidate by the stay determination unit 32 is a location with a high familiarity level for the user of the terminal device 2. If it is determined (the determination method will be described later), the point information of the place is excluded from the generation candidates of the terminal position information S1, and if it is determined that the place is not familiar, the point information of the place It remains as a generation candidate of terminal position information S1.

  The reason for excluding the location information of the familiar place from the generation candidate of the terminal position information S1 is that the familiar place is that the user of the terminal device 2 inputs the name as the location information to the calendar CA. This is because notations such as “home” and “work” are often used apart from general names.

  In other words, even if the server 7 generates POI data using the terminal location information S1 including such a description of the place and constructs the POI database 8, the place is not recognized by anyone other than the user of the terminal device 2. This is because it is generally impossible to recognize what the place is.

  Specifically, the familiarity determination unit 33 uses a pattern mining that uses a so-called hierarchical clustering method, and the point corresponding to the point information (latitude and longitude) that is set as the generation candidate of the terminal position information S1 by the stay determination unit 32 is the terminal. It is determined whether the place is a place familiar to the user of the device 2 or a place that is low.

  As shown in FIG. 6, in the familiarity degree determination unit 33, between two points in a two-dimensional cluster space CC in which a plurality of points of the point information that are candidates for generation by the stay determination unit 32 are plotted on the map MP. When the distance is a set of points smaller than a predetermined threshold and the number of points is larger than the predetermined threshold, clustering can be performed as clusters C1 and C2.

  In this case, if the familiarity determination unit 33 compares the positions of the two clusters C1 and C2 with the positions on the map MP and refers to the profile information of the user stored in advance in the terminal device 2, the cluster C1. Can be recognized as “home” and the cluster C2 is a “workplace” cluster.

  The familiarity determination unit 33 is included in the clusters C1 and C2 because the location of the points included in the clusters C1 and C2 is a familiar place for the user of the terminal device 2 at “home” or “workplace”. The other point PT that is not present is recognized as a special place with a low familiarity level, and the point information of such another point PT is left as a generation candidate of the terminal position information S1.

  When the clustering is performed in the two-dimensional cluster space CC, the familiarity determination unit 33 determines that a special place very close to “home” or “workplace” is also a highly familiar place. May end up.

  Therefore, as shown in FIG. 7, the familiarity determination unit 33 uses the current time acquired simultaneously when the location information is measured by the GPS module 25 to display the time axis (0-24 o'clock) on the two-dimensional map MP. ) Is created, and clustering is performed based on the appearance frequency of point information on the time axis in the three-dimensional cluster space CCC.

  In this case, the cluster C1 corresponding to “home” in the two-dimensional cluster space CC is changed into the cluster C1a corresponding to the morning time zone and the cluster C1b corresponding to the night time zone in the three-dimensional cluster space CCC. Clustered.

  Therefore, the familiarity degree determination unit 33 does not include the point PT measured in the daytime time zone on weekdays in any of the clusters C1a and C1b. Therefore, the point PT is not “home” but has a low familiarity degree. The location information is recognized as a candidate for generating the terminal location information S1.

<Configuration of GPS error determination unit>
The GPS error determination unit 34 determines whether or not to leave the point information as a candidate for generating the terminal position information S1 based on error information (accuracy information) included in the point information measured by the GPS module 25.

  The GPS error determination unit 34 leaves only the spot information whose error information included in the spot information is, for example, 30 m or less as the generation candidate of the terminal position information S1.

  Here, when the error information included in the point information is, for example, 50 m, it means that the point information has an error with a radius of 50 m from the point, and when the error information is 5 m, the point information Means that there is only an error with a radius of 5 m from that point.

  That is, even if the GPS error determination unit 34 is point information left as a candidate for generating the terminal position information S1 via the stay determination unit 32 and the familiarity determination unit 33, if the error information is 100 m, Since the accuracy of the point information is low in the first place, such point information is excluded from the generation candidates of the terminal position information S1.

<Configuration of terminal location information generation unit>
As illustrated in FIG. 4, the terminal location information generation unit 35 reads the name of a place (for example, “ABC Corporation”) included in the schedule information SC corresponding to the spot information left as a generation candidate of the terminal location information S1. .

  Then, the terminal position information generation unit 35 includes a place name (for example, latitude (35.66abcd), longitude (139.73abcd)), a place name (for example, “ABC Co., Ltd.”), and a candidate for generation of the terminal position information S1. And terminal position information S1 is produced | generated at predetermined time intervals based on the time information etc. when the said point information is located. The terminal position information S1 is one candidate used when the server 7 generates POI data to be registered in the POI database 8.

  If the location name is not described in the calendar CA but the time information (13: 0 to 14:00) exists, the terminal location information generation unit 35 does not have the location name (latitude). Terminal position information S1 consisting only of (longitude) is generated, but such terminal position information S1 is not subject to transmission to the server 7 because it corresponds to noise.

<Configuration of transmitter>
The transmission unit 36 wirelessly transmits the terminal location information S1 sequentially generated by the terminal location information generation unit 35 from the base station 5 to the server 7 by the transmission / reception unit 24.

<Server>
As shown in FIGS. 8 and 9, the server 7 includes a computer program (software) in a control unit 41 composed of a CPU (Central Processing Unit), a storage unit 42 composed of a hard disk, etc., and a computer (hardware) composed of various interfaces. Realized by installing.

  The function of the server 7 is realized by cooperation of various hardware resources of a computer and a computer program. Further, the computer program may be provided in a state of being stored in a computer-readable recording medium or a storage device, or may be provided via an electric communication line.

  The server 7 includes a control unit 41 that performs overall control to generate POI data, a storage unit 42 that stores computer programs and various applications, a display unit 43, a communication interface 44 that communicates with the network 6, and a plurality of terminal devices 2. The terminal location information acquisition unit 45 sequentially acquires the terminal location information S1 from 4 to 4 respectively.

  The server 7 has a plurality of terminals acquired as a main functional unit from the plurality of terminal devices 2 to 4 by the terminal position information acquisition unit 45 in cooperation with the control unit 41 and the computer program installed in the storage unit 42. A terminal location information storage unit 51 that stores the location information S1, a POI generation unit 52 that generates POI data based on the plurality of terminal location information S1, and a POI data transmission unit 53 are configured.

<Configuration of terminal location information storage unit>
Since the terminal location information storage unit 51 generates POI data based on the plurality of terminal location information S1 acquired from the terminal devices 2 to 4 by the terminal location information acquisition unit 45 of the server 7, the terminal location information S1 is determined in advance. The data is temporarily accumulated until the predetermined number is reached.

  Here, the terminal location information storage unit 51 collects a predetermined number of pieces of terminal location information S1 having the same place name included in the terminal location information S1. At this time, there are cases where “ABC Co., Ltd.” is written as the name of the place, and there are cases where “ABC Co., Ltd.” and “abc Co., Ltd.” are written. The storage unit 51 performs thesaurus determination for determining synonyms and determines that the names of the places are the same. However, the terminal location information storage unit 51 excludes items with different notations such as “ABQ Corporation” from storage symmetry.

  When the terminal location information S1 having the same location name acquired from the terminal devices 2 to 4 reaches a predetermined number, the terminal location information storage unit 51 sends the predetermined number of pieces of terminal location information S1 to the POI generation unit 52. Output.

  Here, when the terminal location information S1 having the same name does not reach a predetermined number, the terminal location information storage unit 51 determines that the reliability for generating POI data is insufficient with only the terminal location information S1. However, POI data is not generated by the POI generator 52 described later.

<Configuration of POI generator>
The POI generation unit 52 includes a reliability improvement unit 52a that performs a process of increasing the reliability of POI data to be generated based on a predetermined number of pieces of terminal position information S1, and a processing result of the reliability improvement unit 52a. A POI data generation unit 52b that generates the latest and highly accurate POI data reflected is provided.

<Processing by Reliability Improvement Department>
The reliability improvement unit 52a obtains a normal distribution of a plurality of pieces of point information included in each of the plurality of terminal location information S1 stored in the terminal location information storage unit 51, and cuts off 10% on both sides of the 80% confidence interval. Only terminal position information S1 having point information belonging to the range is left as candidate data for generating POI data.

  That is, in the reliability improvement unit 52a, the terminal position information S1 having point information far from the center calculated based on a plurality of pieces of point information is reliable for use as candidate data for generating POI data. Judged to be low.

  Accordingly, the reliability improving unit 52a excludes the terminal position information S1 having the point information determined to be low in reliability from candidate data for generating POI data.

<Processing of POI data generation unit>
In the POI data generation unit 52b, since the plurality of terminal position information S1 left as candidate data by the reliability improvement unit 52a is highly reliable data belonging to the range of the 80% confidence interval, the plurality of terminal position information Hierarchical clustering is performed using the point information included in S1.

  The POI data generation unit 52b clusters a set of points where the distance between two points is smaller than a predetermined threshold among a plurality of points corresponding to the plurality of point information, and as a result, all points are included in one cluster. To see if they gather.

  If all the points are collected in one cluster, there is one place of the points indicated by the plurality of terminal position information S1 left as candidate data by the reliability improving unit 52a. This is because it is considered that high-precision POI data can be obtained if POI data is generated based on the information time S1.

  The POI data generation unit 52b uses the same name as the place in the plurality of terminal position information S1 remaining as candidate data, and calculates the center based on the plurality of point information while using the name. The latitude / longitude of the center is used as POI point information, and POI data is generated by associating the name with the POI point information.

  However, when the POI data generation unit 52b is divided into two clusters as a result of clustering, the point information in the plurality of terminal position information S1 is the same place, but the places classified into the two clusters are two places. It can be recognized as a facility (for example, different stores or companies in one building).

  In this case, the POI data generation unit 52b recognizes the latitude and longitude of the center calculated based on the plurality of pieces of point information included in the first cluster as the first POI point information, and sets the second cluster as the second cluster. The latitude / longitude of the center calculated based on the plurality of pieces of included point information is recognized as the second POI point information.

  The POI data generation unit 52b associates the name of the place having the same name included in each of the plurality of terminal position information S1 belonging to the first cluster with the first POI point information, thereby associating the first cluster. POI data corresponding to is generated.

  At the same time, the POI data generation unit 52b associates the name of the place of the same name included in each of the plurality of terminal position information S1 belonging to the second cluster with the second POI point information, thereby associating the second POI data corresponding to the cluster is generated.

  Thus, when there are a plurality of places (stores, etc.) in one building, the POI data generation unit 52b can generate the latest and accurate POI data corresponding to each place.

  By the way, when the POI data generation unit 52b clusters a set of points whose distance between two points is smaller than a predetermined threshold among a plurality of points corresponding to the plurality of point information, all the points are included in one cluster. It has been confirmed whether or not they are gathered, but there are cases where two names are included as places in the plurality of terminal position information S1 belonging to the one cluster.

  This means that there are two facilities for the same point. In this case, the POI data generation unit 52b has one on the time axis based on the time information corresponding to the plurality of terminal position information S1. The terminal position information S1 including the name of the eye is from what month and date, and the terminal position information S1 including the second name is from which date of the month.

  Since the POI data generation unit 52b can determine when the first name is switched to the second name, it recognizes that the facility has been changed due to relocation or the like at the same point, POI data is generated using a name corresponding to the latest time information.

<Processing of POI data transmission unit>
Thereafter, the POI data transmission unit 53 outputs the POI data generated by the POI data generation unit 52b to the POI database 8, thereby updating the POI database to the latest state with high accuracy.

<Operation of terminal device (transmission processing procedure of terminal location information)>
The operation of the terminal device 2 in the POI database construction system 1 having such a configuration will be described with reference to the flowchart of FIG.

  The control unit 21 of the terminal device 2 first turns on the GPS module 25 (step SP1). And the control part 21 of the terminal device 2 reads the future schedule information SC rather than the present time from the calendar CA of the scheduler 31 (step SP2).

  The control unit 21 of the terminal device 2 determines whether or not the time zone represented by the time information (13: 0 to 14:00) of the schedule information SC is reached (step SP3), and the time information (13:00). If it is not yet in the time zone (˜14: 00) (step SP3: NO), it waits until that time zone is reached (step SP2).

  On the other hand, when the time zone of the schedule information SC is reached (step SP3: YES), the control unit 21 of the terminal device 2 uses the GPS module 25 to obtain the current location information in the time zone specified by the schedule information SC. In addition to acquisition, time information when the point information is acquired is acquired (step SP4).

  As described above, the control unit 21 of the terminal device 2 has the terminal device 2 (user) specified in the schedule information SC in the time zone specified in the schedule information SC (for example, 13: 0 to 14:00). It is determined whether or not the user has stayed in the place ("ABC Corporation").

  When it is determined that the terminal device 2 (user) has stayed (step SP5: YES), the control unit 21 of the terminal device 2 calculates a central point of a plurality of pieces of point information obtained in the time zone, and this center The point information of the point is left as a candidate for generating the terminal position information S1 (step SP6).

  On the other hand, when it determines with the terminal device 2 (user) not staying (step SP5: NO), the control part 21 of the terminal device 2 includes terminal position information in the point information obtained in the time zone. It is determined that there is not enough reliability to remain as a generation candidate of S1, and the process returns to step SP2 again.

  The control unit 21 of the terminal device 2 determines whether or not the place corresponding to the central point left as the generation candidate of the terminal position information S1 is a place that is not familiar to the user of the terminal device 2.

  When it is determined that the place is not familiar to the user of the terminal device 2 (step SP7: YES), the control unit 21 of the terminal device 2 recognizes the name of the place described in the schedule information SC for everyone. Since there is a high possibility that it is an easy general name, the point information is left as a candidate for generating the terminal position information S1 (step SP8).

  On the other hand, when it is determined that the location is familiar to the user of the terminal device 2 (step SP7: NO), the control unit 21 of the terminal device 2 uses the name of the location described in the schedule information SC. Since there is a high possibility that it is not a general name that is easy for anyone to recognize, the point information is excluded from the candidates for generation of the terminal position information S1, and the process returns to step SP2.

  When the control unit 21 of the terminal device 2 determines that the error information included in the spot information left as a generation candidate is equal to or less than a threshold value (for example, 50 m) as defined, for example, 30 m (step SP9: YES), Such point information is left as a generation candidate of the terminal position information S1.

  On the other hand, the control part 21 of the terminal device 2 is larger than a threshold value (for example, 50 m) so that the error information included in the point information left as a generation candidate is defined as, for example, 100 m (step SP9: NO). ), It is determined that such point information is not reliable enough to remain as a candidate for generating the terminal position information S1, and such point information is excluded from the candidates for generating the terminal position information S1, and step SP2 is performed again. Return to the process.

  The control unit 21 of the terminal device 2 includes the point information left as the generation candidate of the terminal position information S1 through the stay determination process (step SP5), the familiarity determination process (step SP7), and the GPS error determination process (step SP9). The terminal location information S1 is generated based on the location name included in the schedule information SC when the point information is acquired, and is transmitted to the server 7 via the base station 5 and the network 6 (step SP10). .

  As a result, the control unit 21 of the terminal device 2 can transmit only significant terminal position information S1 that is one candidate of the latest and accurate POI data to be registered in the POI database 8 of the server 7 to the server 7. The other terminal devices 3 and 4 also transmit only significant terminal position information S1 to the server 7 through a similar processing procedure.

<Server operation (POI data generation processing procedure)>
Next, refer to the flowchart of FIG. 11 for the POI data generation processing procedure until the server 7 receives the terminal position information S1 from each of the terminal devices 2 to 4 and generates POI data based on the plurality of terminal position information S1. While explaining.

  The control unit 41 of the server 7 receives the terminal location information S1 from each of the terminal devices 2 to 4, and sequentially accumulates them in the terminal location information accumulation unit 51 (step SP11). Then, the control unit 41 of the server 7 determines whether the terminal position information S1 having the same name has been accumulated up to a predetermined number (step SP12).

  Here, the control unit 41 of the server 7 has a small number of generation candidates for generating POI data when a plurality of terminal position information S1 having the same name has not reached a predetermined number (step SP12: NO). Therefore, it is determined that high-precision POI data cannot be generated, and the system waits until a plurality of terminal position information S1 reaches a predetermined number (steps SP11 and SP12).

  On the other hand, when the plurality of terminal position information S1 reaches a predetermined number (step SP12: YES), the control unit 41 of the server 7 is 80% in the reliability improvement unit 52a of the POI generation unit 52 as described above. Only the terminal location information S1 belonging to the range of the confidence interval is left as candidate data, and the terminal location information S1 is supplied to the POI data generation unit 52b (step SP13).

  The control unit 41 of the server 7 obtains POI point information by calculating the latitude and longitude of the center based on a plurality of pieces of point information included in the plurality of terminal position information S1 supplied as candidate data.

  Then, the control unit 41 of the server 7 generates POI data by associating the common name (location) included in the plurality of terminal position information S1 remaining as candidate data with the POI point information, and then the POI data Is output to the POI database 8.

  Accordingly, the control unit 41 of the server 7 obtains a general name that can be recognized by anyone among the names of the places included in the schedule information SC of the calendar CA in the terminal devices 2 to 4 and the point information of the places. Based on the associated terminal position information S1, the latest and accurate POI data in which the general name and the POI point information are associated can be generated.

  Then, the control unit 41 of the server 7 accurately reflects the current location and position in real time without forcing the administrator to perform complicated maintenance work by registering and updating the latest and accurate POI data in the POI database 8. The highly reliable POI database 8 can be constructed.

<Second Embodiment>
The control unit 41 of the server 7 has described the case where the POI data is generated based on the terminal location information S1 having the same name accumulated up to a predetermined number by the terminal location information accumulation unit 51. However, the profile information of the user of the terminal device 2 that is the transmission source of the terminal location information S1 may be separately received, and POI data may be generated based on the profile information in addition to the terminal location information S1. .

  For example, when the control unit 41 of the server 7 detects the keyword “high school girl” from the profile information received from the terminal devices 2 to 4, all of the plurality of terminal position information S <b> 1 is information on “high school girl”. Therefore, by using the POI data generated from the plurality of terminal position information S1, the POI database 8 for each purpose, which is “a spot that girls girls love” can be constructed.

  Further, when the control unit 41 of the server 7 refers to the detailed information of the schedule information SC and detects, for example, the term “sweets” described in the detailed information, the term “sweets” is included. Using the POI data generated from the terminal location information S1, a POI database 8 for each purpose called “sweet spot” can be constructed.

<Third Embodiment>
When the location name is not described in the calendar CA at the current time, the control unit 21 of the terminal device 2 generates the terminal location information S1 including only the location information where the location name does not exist. Even so, it is not set as a transmission target to the server 7.

  However, the control unit 21 of the terminal devices 2 to 4 is not limited to this, and the control unit 21 of the terminal devices 2 to 4 includes the terminal position information S1a including only the point information where the name of the place does not exist, and the terminal position where the name of the place does not exist Information S1b may also be a transmission target to the server 7.

  For example, the control unit 41 of the server 7 uses the terminal devices 2 to 4 for the terminal position information S1a consisting only of the point information where the name of the place does not exist and the terminal position information S1b where the name of the place exists but does not exist. Acquired and stored in the terminal location information storage unit 51, and simultaneously receives the schedule information SCa from the terminal device 2 of the terminal location information S1a and the schedule information SCb from the terminal device 3 of the terminal location information S1b.

  As a result, the control unit 41 of the server 7 verifies the schedule information SCa and the schedule information SCb, and discusses intellectual property with “a” and “b” described as the “purpose” item in both the schedule information SCa and SCb. ”And the like, it can be determined that there is a high possibility that both Mr. a and Mr. b are in the same place.

  In this case, the control unit 41 of the server 7 includes the terminal position information S1a from Mr. a consisting of only the point information where the name of the place does not exist, and the terminal position information from Mr. b who has the name of the place but does not have the position information By merging with S1b, terminal location information S1ab in which a place name and location information) are associated with each other can be generated, and this can also be stored in the terminal location information storage unit 51 as one record.

<Fourth embodiment>
The purpose of the fourth embodiment is the same as that of the third embodiment, and the basic configuration is the same as that of the POI database construction system 1 (FIG. 1) in the first embodiment. As shown in FIG. 12, the server 7 of the POI database construction system 100 is provided with an accompanying detection device 9 that detects whether or not the users a and b of the terminal devices 2 and 3 are accompanying.

  In this case, it is necessary for the terminal devices 2 and 3 to have, for example, a pedometer function (app) as a sensor for detecting the activity state of the users a and b of the terminal devices 2 and 3. .

  The accompanying detection device 9 detects that the users “a” and “b” of the terminal devices 2 and 3 are in the “accompanying state” which is considered to be acting together. More specifically, the accompanying detection device 9 determines whether or not the two persons are in the accompanying state based on the sensor data (in this case, the step count data S11 and S12) obtained from the users a and b.

  When the accompanying detection device 9 detects that both of them are in the accompanying state, the accompanying detection device 9 outputs the accompanying detection result T1 indicating that they are in the accompanying state to the server 7 and detects that the two are not accompanying them. The non-accompanying detection result T2, which means that the user was not in the accompanying state, is output to the server 7.

  A more specific functional configuration of the accompanying detection device 9 will be described with reference to FIG. The accompanying detection device 9 includes a sensor information input unit 61, a similar information calculation unit 62, and an accompanying determination unit 63.

  The sensor information input unit 61 sequentially receives step count data S11 and S12 sent from the terminal devices 2 and 3 of the users a and b via the base station 5 and the network 6, and a similar information calculation unit 62 described later. To enter.

  Focusing on the users a and b, the step count data S11 and S12 are, for example, step count information for each minute of the users a and b. Therefore, the step count data S11 and S12 are sensor information from the terminal devices 2 and 3 at one minute intervals. Input to the input unit 61.

  The similarity information calculation unit 62 calculates similarity information R1 indicating the similarity of each other's actions (in this case, walking) based on the step count data S11 and S12 of the users a and b supplied from the sensor information input unit 21. To do. The similarity information R1 is a value that increases as the degree of matching between the step count data S11 and S12 of the users a and b, for example, increases.

  Therefore, if the similarity information R1 is calculated from the step count data S11 and S12 for each predetermined time interval and the similarity information R1 is large, it is highly likely that the users a and b have taken the same action in the time interval. If the similarity information R1 is small, it can be considered that there is a high possibility that the users a and b acted separately in the time interval.

  The similar information calculation unit 62 outputs the similar information R1 to the accompanying determination unit 63. Since the technique for calculating the similar information R1 based on such two data is a known technique, a detailed description thereof is omitted here.

  The accompanying determination unit 63 determines whether the similarity information R1 supplied from the similarity information calculation unit 62 exceeds a predetermined threshold value in the time interval for calculating the similarity information R1. It is determined whether or not a and b are in the accompanying state.

  Here, when the similar information R1 exceeds the threshold value, the accompanying determination unit 63 determines that the users a and b are accompanying each other in the time interval for which the similar information R1 is calculated. When the similarity information R1 does not exceed the threshold value, the accompanying determination unit 63 determines that the users a and b are not accompanying each other in the time interval for which the similarity information R1 is calculated.

  Such a determination result is associated with the time information of the step count data S11 and S12 of the users a and b belonging to the time interval, and the users a and b are accompanying each other at the time of the time information. The accompanying accompaniment determination result T1 or the non-accompanying determination result T2 indicating that the users a and b did not accompany each other at the time of the time information is output to the server 7.

  Therefore, the accompanying determination unit 63 continuously performs the accompanying determination result T1 including the time information of 8:10:00 every other minute from the accompanying determination result T1 including the time information of 8:01:00. If it can be obtained, the accompanying determination unit 63 can determine that the users “a” and “b” have been accompanying each other for 10 minutes from 8:00 to 00:10. . As described above, the accompanying determination unit 63 can also determine the presence / absence of the accompanying person and the accompanying time.

  Note that the threshold value in this case may be determined by referring to the step count data S11 and S12 when the users a and b have actually accompanied each other in the past by manual or statistical processing. The threshold may be set as appropriate by nine developers or managers.

  As in the third embodiment, the terminal location information storage unit 51 of the server 7 includes terminal location information S1a that includes only location information that does not have a place name, or a terminal that has a location name but no location information. When the position information S1b is also accumulated, the accompanying determination result T1 of the accompanying detection device 9 can be used meaningfully.

  Specifically, when the terminal location information storage unit 51 recognizes that the users a and b are accompanying each other based on the accompanying determination result T <b> 1 from the accompanying detection device 9, only the location information where the name of the place does not exist. The terminal position information S1a from Mr. a and the terminal position information S1b from Mr. b who has the name of the place but no location information are merged.

  Thereby, the terminal location information storage unit 51 generates terminal location information S1ab in which the name of the place and the location information are associated with each other, and this can also be stored in the terminal location information storage unit 51 as one record.

  As described above, the server 7 includes terminal location information S1a that includes only location information that has not been stored as terminal location information until now, and terminal location information S1b that has location name but does not have location information. One terminal location information S1ab can be generated based on the above and stored as a record.

  Thus, the server 7 can increase the number of data of the terminal position information S1 acquired from the terminal devices 2 to 4 to reach a predetermined number, so that POI data can be generated.

<Other embodiments>
In the first to fourth embodiments described above, the case where the spot information obtained by the GPS module 25 is used as the terminal position information S1 of the terminal device 2 has been described.

  However, the present invention is not limited to this, and the position information of the beacon when the terminal device 2 receives a signal emitted from the beacon is used as the terminal maintenance information S1 of the terminal device 2, or the radio wave of WiFi (Wireless Fidelity) is received. If possible, information indicating that the terminal device 2 exists in the WiFi communication range may be acquired by the fingerprint method and used as the terminal position information S1.

  In the first to fourth embodiments described above, the case where the stay determination unit 44 makes a stay determination using the inner product of two vectors is described, but the present invention is not limited to this. The moving speed of the terminal device 2 is calculated based on the distance between the points and the time required between them, and the moving speed of the terminal device 2 is a point staying at the place where the moving speed is lower than a predetermined threshold speed. You may make it determine.

  Further, in the first to fourth embodiments described above, the case has been described in which the control unit 21 of the terminal device 2 performs processing in the order of stay determination processing, familiarity determination processing, and GPS accuracy determination processing. The present invention is not limited to this, and all the processes may be performed at the same time, the processes may be performed in the reverse order, or only one or two of these processes may be performed.

  Further, in the first to fourth embodiments described above, the terminal device 2 has been described as including the stay determination unit 32, the familiarity determination unit 33, and the GPS error determination unit 34. However, the stay determination unit 32, the familiarity determination unit 33, and the GPS error determination unit 34 may be provided in the server 7.

  In this case, the terminal device 2 transmits all of the place name and the point information to the server 7 as the terminal position information S1 without performing the stay determination process, the familiarity determination process, and the GPS error determination process.

  In the server 7, the point information and the place left as generation candidates without being excluded by the stay determination unit 32, the familiarity determination unit 33, and the GPS error determination unit 34 in the stay determination process, the familiarity determination process, and the GPS error determination process POI data can be generated using only the terminal position information S1 generated based on the name of the terminal.

  Furthermore, in the above-described fourth embodiment, when the server 7 is provided with the accompanying detection device 9 for detecting whether or not the users a and b of the terminal devices 2 and 3 are accompanying the server 7. However, the present invention is not limited to this, and the accompanying detection device 9 may be incorporated in each of the terminal devices 2 and 3.

  In this case, the terminal device 2 and the terminal device 3 also transmit the accompanying detection result to the server 7 together with the terminal position information S1. Thereby, in the server 7, the terminal position information S1a consisting only of the point information where the name of the place acquired from the terminal device 2 does not exist, and the terminal position information S1b which includes the name of the place acquired from the terminal device 3 but does not exist of the point information. Can be generated as one terminal location information S1ab and stored as a record.

  Furthermore, in the above-described fourth embodiment, the accompanying detection device 9 provided for the server 7 detects whether or not the users a and b of the terminal devices 2 and 3 are accompanying, and the point information The case has been described in which the terminal position information S1a consisting only of the name and the terminal position information S1b consisting only of the name of the place are merged to generate one terminal position information S1ab.

  However, the present invention is not limited to this, and based on information obtained by the social networking service, it is detected whether or not the users a and b of the terminal devices 2 and 3 are accompanied, and the terminal is composed only of point information. The terminal information S1ab may be generated by merging the position information S1a and the terminal position information S1b including only the name of the place.

  Furthermore, in the first to fourth embodiments described above, the location information included in the schedule information SC corresponding to the location information left as the generation candidate of the terminal location information S1 by the terminal location information generation unit 35 of the terminal device 2 is displayed. The case where the terminal position information S1 is generated based on the name, the point information left as a generation candidate of the terminal position information S1, and the like is transmitted to the server 7 has been described. However, the present invention is not limited to this, and the terminal device 2 transmits only the point information to the server 7, and the server 7 schedule information SC in which the time of the point information received from the terminal device 2 is registered in the storage unit 42. Are included in the time information range, the control unit 41 generates and acquires a plurality of terminal position information S1 based on the location name included in the schedule information SC and the point information received from the terminal device 2. May be. In this case, the control unit 41 functions as a terminal location information acquisition unit.

  DESCRIPTION OF SYMBOLS 1,100 ... POI database construction system, 2-4 ... Terminal device, 5 ... Base station, 6 ... Network, 7 ... Server, 8 ... POI database, 9 ... Accompanying detection device, 21, 41 ...... Control unit, 22 ... Memory (storage unit), 23, 43 ... Display unit, 24 ... Transmission / reception unit (transmission unit), 25 ... GPS module (positioning unit), 31 ... Scheduler, 32 ... Retention Determining unit 33... Familiarity determining unit (determining unit) 34... GPS error determining unit 35... Terminal position information generating unit 36... Transmitting unit 41. 44: Communication interface. 45 …… Terminal location information acquisition unit (terminal location information acquisition unit) 51 …… Terminal location information storage unit 52 …… POI generation unit 52a …… Reliability improvement unit 52b …… POI data generation unit 53… ... POI data transmission unit 61... Sensor information input unit 62... Similar information calculation unit 63.

Claims (13)

Information on the location extracted from schedule information in which information on time and information on location are associated with each other, and point information of the terminal device measured at the time specified by the information on time A terminal location information acquisition unit that acquires a plurality of information,
A POI generating unit that generates POI (Point Of Interest) data in which information on a location and point information are associated with each other based on the information on the location and the point information included in a plurality of the terminal position information. A featured POI data generator. The POI generator is
The POI data is generated using terminal position information determined based on the point information when the terminal device stays at the place set by the schedule information. POI data generator. The POI generator is
Of the plurality of terminal position information clustered based on the point information, using other terminal position information excluding terminal position information included in a cluster in which the number of belonging terminal position information is larger than a predetermined threshold The POI data generation apparatus according to claim 1 or 2, wherein the POI data is generated. The POI generator is
The POI data generation according to any one of claims 1 to 3, wherein the POI data is generated by using terminal position information including point information in which error information included in the point information is smaller than a predetermined threshold value. apparatus. The POI generator is
The POI data is generated using the predetermined number of pieces of terminal position information that match the information about the location when the terminal position information that matches the information about the place reaches a predetermined number. 4. The POI data generation device according to any one of 4 above. The POI generator is
A plurality of terminal position information corresponding to a plurality of pieces of point information included in an X% confidence interval (X is a rational number greater than 0 and less than 100) of the normal distribution for a plurality of pieces of point information respectively corresponding to the predetermined number of pieces of terminal position information. The POI data generation apparatus according to claim 5, wherein the POI data is generated by using the POI data. The POI generator is
Hierarchical clustering is performed on the plurality of terminal position information included in the X% confidence interval, and when clustered into a plurality of clusters, a plurality of POI data respectively corresponding to the plurality of clusters is generated. The POI data generation device according to claim 6. A positioning unit for positioning point information indicating its current position;
A storage unit that stores schedule information in which information about time and information about a place are associated with each other;
Corresponding the information about the place read out from the schedule information and the point information measured by the positioning unit at the time specified by the information about the time associated with the information about the place in the schedule information A terminal location information generation unit for generating terminal location information by attaching,
A terminal device comprising: a transmission unit that transmits the terminal position information to a server. A control unit for determining whether or not the terminal device is staying at the place set in the schedule information,
The transmission unit transmits terminal location information corresponding to the point information when it is determined that the terminal device is staying in the place set by the schedule information to the server. Item 9. The terminal device according to Item 8. The controller is
Among the plurality of terminal position information clustered based on the point information, terminal position information included in a cluster in which the number of terminal position information to which the terminal belongs is larger than a predetermined threshold, and other terminals excluding the terminal position information A determination unit for determining position information,
10. The terminal device according to claim 8, wherein the transmission unit includes: the determination unit configured to transmit the other terminal location information that is not included in the cluster to the server. 11. The controller is
The terminal device according to claim 10, wherein terminal information including point information in which error information included in the point information when positioning is performed by the terminal device is smaller than a predetermined threshold is transmitted to the server. . Information on the location extracted from schedule information in which information on time and information on location are associated with each other, and point information of the terminal device measured at the time specified by the information on time A terminal location information acquisition step for acquiring a plurality of information,
A POI generation step of generating POI (Point Of Interest) data in which the location information and the location information are associated by the POI generation unit based on the location information and the location information included in the plurality of terminal location information. A POI data generation method comprising: Against the computer
Information on the location extracted from schedule information in which information on time and information on location are associated with each other, and point information of the terminal device measured at the time specified by the information on time A terminal location information acquisition step of acquiring a plurality of information by the terminal location information acquisition unit;
A POI generation step of generating POI (Point Of Interest) data in which the location information and the location information are associated by the POI generation unit based on the location information and the location information included in the plurality of terminal location information. A program characterized by being executed.