JP2013040908A - Route guide device and route guide method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide route information on which passersby's advice is reflected.SOLUTION: Link data indicative of links constituting routes and cost data indicative of costs in the links are stored in a route information storage unit in association with each other, and posting information posted from user terminals is acquired from a server and is stored in a posting information storage unit. The posting information storage unit is referred to specify a link corresponding to each piece of the posting information on the basis of contents of the piece of the posting information, and analysis for determining whether the cost of the link should be increased or reduced is performed. Cost data stored in the route information storage unit is updated on the basis of analysis results of the posting information. A route search condition is accepted, and the route information storage unit is referred to output route information indicative of a route meeting the route search condition.

Description

  The present invention relates to a route guidance device and a route guidance method.

  Route guidance systems that provide route information to user terminals such as portable terminals and personal computers have become widespread. In such a system, for example, it is possible to provide route information about a route combining a plurality of moving means such as trains, buses, and walks by inputting search conditions such as a departure point and a destination. For example, Patent Document 1). When such route information is provided, a route search is generally performed by considering the cost set for the links constituting the route. For example, when searching for walking routes, it is possible to search for easy walking routes and safe routes by associating costs indicating the difficulty of walking and safety with each link. (For example, Patent Document 2).

JP 2005-114370 A JP 2003-121191 A

  Here, the cost data indicating the cost of each link is generally updated by a system administrator at the timing of system maintenance based on, for example, a field survey or statistical information. Therefore, it is difficult to say that the route information provided based on such cost data reflects the opinions of actual passers-by.

  The present invention has been made in view of such circumstances, and an object thereof is to provide route information reflecting the opinions of passers-by.

  A route guidance device according to an aspect of the present invention includes a route information storage unit that stores link data indicating links constituting a route and cost data indicating costs in the links in association with each other, and a posting posted from a user terminal A post information acquisition unit that acquires information from a server and stores the information in a post information storage unit, and a post information storage unit, specifies a link corresponding to the post information based on the content of each post information, and A post information analysis unit that analyzes whether the cost of the link should be increased or decreased, a cost data update unit that updates cost data stored in the route information storage unit based on the analysis result of the post information analysis unit, A route information output unit that receives a route search condition, refers to a route information storage unit, and outputs route information indicating a route satisfying the route search condition.

  In the present invention, the “part” does not simply mean a physical means, but includes a case where the function of the “part” is realized by software. Also, even if the functions of one “unit” or device are realized by two or more physical means or devices, the functions of two or more “units” or devices are realized by one physical means or device. May be.

  According to the present invention, it is possible to provide route information reflecting the opinions of passers-by.

It is a figure which shows the structure of the route guidance system which is one Embodiment of this invention. It is a figure which shows an example of contribution information. It is a figure which shows an example of the network comprised by a node and a link. It is a figure which shows an example of the route information stored in route information DB. It is a figure which shows an example at the time of specifying a link. It is a figure which shows an example of the analysis information produced | generated by the analysis of the contribution information analysis part. It is a figure which shows an example of the route information screen displayed in a user terminal. It is a figure which shows an example of the screen which displayed the path | route on the map. It is a flowchart which shows an example of the cost update process in a route guidance apparatus. It is a flowchart which shows an example of a route search process.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a configuration of a route guidance system according to an embodiment of the present invention. The route guidance system includes a user terminal 10, a posting server 12, and a route guidance device 14. In FIG. 1, only one user terminal 10 is shown to simplify the description, but the system may include a plurality of user terminals 10. A plurality of posting servers 12 may also exist.

  The user terminal 10 is an information processing apparatus used by a user who uses route guidance, and is, for example, a mobile terminal or a personal computer. As shown in FIG. 1, the user terminal 10 includes a search condition receiving unit 20, a route information acquisition unit 22, a route information storage unit 24, and a route information display unit 26. Each unit in the user terminal 10 can be realized, for example, by using a storage area such as a memory or a storage device or by executing a program stored in the storage area by a processor.

  The search condition receiving unit 20 receives route search conditions, which are various conditions for performing a route search, such as a departure point, a destination, a waypoint, a date, a moving means, and a priority condition, from the user. The route information acquisition unit 22 acquires route information indicating a route that satisfies the route search condition by transmitting the route search condition to the route guidance device 14 via the network, and stores the route information in the route information storage unit 24. Based on the route information stored in the route information storage unit 24, the route information display unit 26 presents the route information indicating the searched route to the user, for example, by displaying on the display.

  The posting server 12 enables posting information posted by a user to be shared among a plurality of users. For example, a posting information sharing system such as an SNS (Social Networking Service) or a miniblog (microblog) is provided. Is one or a plurality of information processing apparatuses. As shown in FIG. 1, the posting server 12 includes a posting control unit 30 and a posting information storage unit 32. Each unit in the posting server 12 can be realized, for example, by using a storage area such as a memory or a storage device, or by a processor executing a program stored in the storage area. The posting information storage unit 32 may be configured on a storage device different from the posting server 12.

  The posting control unit 30 can accept posting information from a user terminal used by a user who uses the posting information sharing system and store the posting information in the posting information storage unit 32. Further, the posting control unit 30 can provide posting information posted by other users in the system to the user terminal in response to a request from a user terminal used by a user who uses the posting information sharing system. Although not shown in FIG. 1, the posting server 12 stores account information indicating, for example, which user's posting information each user is referring to. The posting control unit 30 can share the posting information among a plurality of users based on the account information. In addition, the posting control unit 30 can provide the posting information stored in the posting information storage unit 32 in response to a request from another information processing device such as the route guidance device 14.

  FIG. 2 shows an example of post information. As shown in FIG. 2, the posting information includes a user ID, a user attribute, date and time, latitude and longitude, and posting data. The user ID is an identifier used when the user uses the posted information sharing system, and is called a so-called “account”. A user attribute is information which shows a user's attributes, such as a user's sex and age. In the example of FIG. 2, the user's sex (male: M / female: F) is set as the user attribute. At the time of the day, the date and time when the posting information is posted is set. The latitude / longitude is position information indicating the position of the user terminal when the posting information is created, and is set based on, for example, an output from a GPS receiver included in the user terminal. Note that latitude and longitude may not be set, such as when posting information is posted from a user terminal that does not have a function of generating position information. Further, not only latitude and longitude, but also information such as roads, routes, and facility identifiers that can specify the position where the posted information is generated can be used as the position information. The posted data is data indicating the content posted by the user, and includes, for example, text data such as “tweet” of the user. The posted data is not limited to text data, and may include audio data, image data, and the like, for example.

  Returning to FIG. 1, the route guidance device 14 receives route search conditions from the user terminal 10 and provides the user terminal 10 with route information indicating one or more routes that satisfy the route search conditions. Alternatively, it is configured using a plurality of information processing apparatuses. As shown in FIG. 1, the route guidance device 14 includes a route information database (DB) 40, a posted information acquisition unit 42, a posted information storage unit 44, an analysis dictionary storage unit 46, a posted information analysis unit 48, and an analysis information storage unit 50. , A cost update unit 52, a route information output unit 54, and a map information database (DB) 56. Each unit in the route guidance device 14 can be realized by using a storage area such as a memory or a storage device, or by executing a program stored in the storage area by a processor.

  The route information DB 40 is a database that stores route information necessary for route guidance. Specifically, the route information DB 40 stores data indicating nodes and links constituting the route, data indicating the cost of each link, and the like.

  FIG. 3 shows an example of a network composed of nodes and links. In the case of a road network, for example, an intersection is a node and a road between the intersections is a link. In the case of a route network, for example, a station is a node and a route between stations is a link. Other networks can be similarly represented by nodes and links. As shown in FIG. 3, each link is given a cost that is considered when performing a route search. In FIG. 3, for example, the cost of the link L1 between the node N1 and the node N2 is “3”, and the cost of the link L2 between the node N1 and the node N4 is “2”. In this embodiment, only one cost (basic cost) is shown for each link to simplify the description. For example, the cost when considering travel time and the cost when considering distance A plurality of costs may be set for one link.

  FIG. 4 shows an example of route information stored in the route information DB 40. The route information includes node information shown in FIG. 4A and link information shown in FIG.

  As shown in FIG. 4A, the node information includes a node ID for identifying each node and a latitude / longitude which is position information of each node. The node position information may include other information such as altitude in addition to the latitude and longitude. The node information may include information such as the type and name of the node.

  As shown in FIG. 4B, the link information includes link data and cost data. The link data includes a link ID for identifying each link and the start point / end point of the link. For example, the link data in FIG. 4B indicates that the start point node of the link L1 is N1 and the end point node is N2. The cost data is data indicating the cost of each link considered when the route search is performed, and includes a basic cost, an additional cost, and an additional condition. The basic cost is a cost set in advance for each link, and can be updated by the system administrator at the system maintenance timing, for example. As described above, a plurality of basic costs with different conditions may be set for one link. The additional cost is a cost that can be additionally considered with respect to the basic cost during the route search. As will be described later, the additional cost is added / updated at any time during the operation of the system based on the posting information posted to the posting server 12. The additional condition indicates a condition for applying the additional cost, and is added / updated as needed along with the additional cost. The additional conditions include, for example, conditions such as date and time, priority conditions such as giving priority to roads with few stairs and priority to safe roads. In addition, when the additional cost considered in the route guidance apparatus 14 is only with respect to one type of conditions (for example, "safe"), additional conditions may not be included in cost data.

  Returning to FIG. 1, the posting information acquisition unit 42 acquires the posting information by transmitting a posting information acquisition request to the posting server 12 and stores the posting information in the posting information storage unit 44. Here, it is possible to set conditions for posting information to be acquired in an acquisition request for acquiring posting information. For example, the posting information acquisition unit 42 can set the posting date and time, user attributes, and the like as conditions. For example, the posting information acquisition unit 42 may acquire the posting information posted during the predetermined period from the posting server 12 for each predetermined period.

  The analysis dictionary storage unit 46 stores an analysis dictionary for analyzing whether or not it is a factor that increases or decreases the cost of the link based on the posting data included in the posting information. For example, if the posted data is text data and the text “easy to walk” is included, the road (link) on which this posted data is posted is a factor that reduces costs when safety is a priority. it is conceivable that. Therefore, the analysis dictionary storage unit 46 stores various texts in association with information indicating the characteristics of the links indicated by the texts. Here, the information indicating the characteristics of the link includes priority conditions for route search and information indicating whether the cost is increased or decreased in the priority conditions. One type of text may be associated with a plurality of features. In addition, the analysis dictionary storage unit 46 may store information for absorbing fluctuations in expression.

  The posted information analysis unit 48 refers to the posted information stored in the posted information storage unit 44, specifies the link corresponding to the posted information based on the content of each posted information, and increases or decreases the cost of the link Analysis information indicating the analysis result is stored in the analysis information storage unit 50. Specifically, the posting information analysis unit 48 first increases the cost of each posting information, which is a factor that reduces the cost, based on the analysis dictionary stored in the analysis dictionary storage unit 46. Distribute to Bad posts that are considered to be a factor. In addition, when there are a plurality of priority conditions when considering the additional cost, it is possible to sort into Good posting and Bad posting for each priority condition. Also, the posting information analysis unit 48 is a link corresponding to each posting information based on the latitude and longitude set in the posting information, that is, a link that is assumed to have been passed by the user when the posting information was posted. Is identified.

  FIG. 5 shows an example when a link is specified. As illustrated in FIG. 5, the posting information analysis unit 48 specifies, for example, a link L1 that is closest to the latitude and longitude (X10, Y10) set in the posting information as a link corresponding to the posting information. be able to. Note that the specified link may not be the link closest to the position indicated by the posting information. For example, if the link information stored in the route information DB 40 contains information indicating the characteristics and type of each link, the user can post post information by considering such information. It is good also as a link with high property specified. Further, the posting information analysis unit 48 may specify a link corresponding to the posting information based on the posting data set in the posting information. For example, when the posting data is text data, the posting information analysis unit 48 may specify a position based on the name of a facility or place included in the text, and may specify a link corresponding to this position. In this case, information for specifying a position from post data may be included in the analysis dictionary. Or it is good also as acquiring positional information, such as a latitude longitude, by transmitting the name of a facility or a place to another server.

  FIG. 6 shows an example of analysis information generated by the analysis of the posting information analysis unit 48. As shown in FIG. 6, in addition to the user ID, user attribute, and date / time of each post information, the link ID of the link specified for each post information and the analysis result are set in the analysis information. . The analysis result includes priority conditions and determination information. The analysis information shown in FIG. 6 is an example when the post information shown in FIG. 2 is analyzed. For example, in the first post information shown in FIG. 2, the post data is “easy to walk!”. Here, when the phrase “easy to walk” is registered in the analysis dictionary as a phrase that affirms that it is “safe”, the posted information analysis unit 48 indicates that the road (link) on which the posted data is posted is “ When priority is given to “safety”, it is determined that the cost is reduced. Therefore, as shown in FIG. 6, the posted information analysis unit 48 generates the first analysis information in which “safety” is set as the priority condition and “Good” is set as the determination information. That is, the first post information shown in FIG. 2 is distributed to Good post. Further, for example, in the second posting information shown in FIG. 2, the posting data is “Many stairs”. Here, when the phrase “there are many stairs” is registered in the analysis dictionary as a phrase that denies that there are few “stairs”, the posted information analysis unit 48 determines the road (link) on which the posted data is posted. If priority is given to a small number of “staircases”, it is determined that this is a factor that increases costs. Therefore, the posting information analysis unit 48 generates second analysis information in which “stairs” is set as the priority condition and “Bad” is set as the determination information, as shown in FIG. That is, the second post information shown in FIG. 2 is distributed to the Bad post.

  In the example of FIG. 6, only one piece of analysis information is generated from one piece of post information, but a plurality of pieces of analysis information may be generated from one piece of post information. Further, the determination information is not limited to Good / Bad, and a plurality of values may be set according to the analysis result. In the example of FIG. 6, the priority condition is included in the analysis information. However, when the additional cost considered in the route guidance device 14 is for only one type of condition (for example, “safe”). The priority condition may not be included in the analysis information.

  Returning to FIG. 1, the cost update unit 52 updates the cost data stored in the route information DB 40 based on the analysis result of the posted information analysis unit 48. Specifically, the cost update unit 52 refers to the analysis information illustrated in FIG. 6 and counts the number of Good posts and Bad posts for each link ID and priority condition. Then, the cost update unit 52 calculates an additional cost for each link ID and priority condition based on the count result, and adds it to the link information stored in the route information DB 40 as shown in FIG. To do. At this time, the priority condition can be set as an additional condition of cost data.

  It should be noted that any method can be adopted for calculating the cost based on the count result of Good posting and Bad posting. For example, “-0.1 points” for each Good posting and “+0.1 points” for each Bad posting, and the additional cost is calculated according to the total number of points for each link ID and priority condition. It is good. Specifically, as illustrated in FIG. 6, when there are two Good posts and one Bad post for the link ID “L1” and the priority condition “safe”, the total number of points is “−0.1 points”. It becomes. In this case, for example, as illustrated in FIG. 4B, the cost updating unit 52 can register the additional cost “−0.1” for the additional condition “safe” for the link with the link ID “L1”. Note that the total number of points and the value of the additional cost may not be the same.

  The cost update unit 52 can also generate an additional condition for cost data based on the date and time set in the analysis information. For example, in the combination of a certain link ID and priority condition, when it is possible to determine that the time zone in which the Good posting is posted is in the morning, the cost update unit 52 adds the additional cost for the link ID and the priority condition. At the same time, “morning” may be set as an additional condition.

  The cost update unit 52 can also generate an additional condition for cost data based on the user attribute set in the analysis information. For example, in a combination of a certain link ID and priority condition, when the ratio of males to users who post Good posts is a predetermined threshold (for example, 80%) or more, the cost update unit 52 determines the link ID. In addition to the additional cost for the priority condition, “male” may be set as the additional condition.

  Returning to FIG. 1, when receiving the route search condition from the user terminal 10, the route information output unit 54 searches for route information indicating a route satisfying the route search condition based on the cost data stored in the route information DB 40. To the user terminal 10. FIG. 7 shows an example of a route information screen displayed on the user terminal 10 based on the route information output from the route information output unit 54. As illustrated in FIG. 7, for example, the route information output unit 54 searches for a plurality of routes between the departure point and the destination input as route search conditions based on the cost data. At this time, the route information output unit 54 searches for a route having a low cost for each condition for which the cost is set, and can output route information for a plurality of routes as shown in FIG. In the example of FIG. 7, the “route 3” that is the route determined to have the lowest “safety” cost based on the posted information is included in the plurality of routes. In this way, the route information output unit 54 can output a route that considers only the basic cost and a route that takes into account the additional cost in addition to the basic cost.

  Note that the route information output unit 54 may output only one of the route considering only the basic cost or the route considering the additional cost in addition to the basic cost, according to the route search condition. Further, the route information output unit 54 may output a plurality of route information for one condition. For example, the route information output unit 54 may search and output a plurality of routes in consideration of the cost of “safe”. In this case, for example, the route information output unit 54 can output the route information so that the priority is higher in ascending order of cost.

  The route information output unit 54 can also output map information for displaying the route together with the map. For example, in the user terminal 10, when the section from the station B to the destination of “Route 3” is selected on the screen shown in FIG. 7, the route information display unit 26 of the user terminal 10 displays the details of the section. To the route guidance device 14. In response to this request, the route information output unit 54 can acquire map information for displaying the section from the map information DB 56 and output it to the user terminal 10. The map information may be acquired from a map server provided separately from the route guidance device 14. In addition, the route information output unit 54 does not transmit the map information to the user terminal 10, but the user terminal 10 may acquire map information necessary for displaying the route from the map server.

  Further, the route information output unit 54 acquires position information indicating the position of the posted information posted in the displayed map area from the posted information storage unit 44, and outputs it to the user terminal 10 together with the route information and the map information. be able to. At this time, the route information output unit 54 may output only post information related to the route information based on the analysis information stored in the analysis information storage unit 46. For example, the route information output unit 54 may output only post information determined as Good post or Bad post by the post information analysis unit 48.

  FIG. 8 shows an example of a screen on which a route information display unit 26 of the user terminal 10 displays a route on a map based on route information from the route guidance device 14 and map information. In the example illustrated in FIG. 8, the route determined to be “safe” based on the user's post is indicated by a solid line. At this time, as shown by a broken line in FIG. 8, it is also possible to display the route searched for by the basic cost. As shown in FIG. 8, the route information display unit 26 may display an icon indicating a position where the posted information is posted on the map. And the route information display part 26 may display the content of this posting information, if the icon which shows the position of posting information is selected. The content of the posted information may be transmitted in advance from the route information output unit 54 of the route guidance device 14 to the user terminal 10 together with the map information or the like, and triggered by the selection of an icon on the map. The route information output unit 54 may output the information to the user terminal 10. In addition, any method can be adopted for displaying the posted information. For example, instead of displaying an icon indicating the position of posted information on the map, a list of posted information may be displayed in a display area different from the map.

  FIG. 9 is a flowchart illustrating an example of the cost update process in the route guidance device 14. The posting information acquisition unit 42 refers to the posting server 12 at a predetermined timing, acquires the posting information to be analyzed, and stores it in the posting information storage unit 44 (S901). The posting information acquisition unit 42 may acquire the posting information from the posting server 12 not at a predetermined timing but at a timing when an instruction from the system administrator is input, for example.

  The posting information analysis unit 48 sorts the posting information stored in the posting information storage unit 44 into Good postings and Bad postings by analyzing the posting information based on the analysis dictionary stored in the analysis dictionary storage unit 46 ( S902). Specifically, for example, the posting information analysis unit 48 can determine Good posting or Bad posting by analyzing text data included in the posting data of the posting information.

  In addition, the posting information analysis unit 48 specifies the position where the posting information is posted for the posting information distributed to the Good posting and the Bad posting (S903). Specifically, the posting information analysis unit 48 can specify the position where the posting information is posted by, for example, the latitude and longitude set in the posting information. Further, the posting information analysis unit 48 may specify the position where the posting information is posted by analyzing the posting data set in the posting information, for example. Then, the posting information analysis unit 48 specifies a link corresponding to the specified position for each piece of posting information (S904). Specifically, the posting information analysis unit 48 can specify, for example, a link that exists at a position closest to the specified position as a link corresponding to the posting information.

  Based on the analysis result as described above, the posting information analysis unit 48 can generate the analysis information indicating the analysis result of the posting information as illustrated in FIG. 6 and store it in the analysis information storage unit 50. Then, the cost update unit 52 updates the cost data stored in the route information DB 40 based on the analysis information stored in the analysis information storage unit 50 (S905).

  Although FIG. 9 shows posting information acquisition, posting information analysis, and cost information updating as a series of processes, these processes may be executed at independent timings. For example, the acquisition of post information may be performed every hour, and the analysis of post information and the update of cost information may be performed every day.

  FIG. 10 is a flowchart illustrating an example of route search processing. First, the search condition receiving unit 20 of the user terminal 10 receives a route search condition by an input from the user (S1001). Then, the route information acquisition unit 22 of the user terminal 10 transmits the accepted route search condition to the route guidance device 14 (S1002).

  When receiving a route search request from the user terminal 10 (S1003), the route information output unit 54 of the route guidance device 14 refers to the route information DB 40 and executes a route search based on the route search conditions (S1004). Then, the route information output unit 54 transmits the route information of the route satisfying the route search condition as a search result to the user terminal 10 (S1005).

  The route information acquisition unit 22 of the user terminal 10 receives the search result transmitted from the route guidance device 14, and stores the route information indicating the search result in the route information storage unit 24 (S1006). Then, the route information display unit 26 displays the search result of the route satisfying the route search condition input by the user based on the route information stored in the route information storage unit 24 (S1007). As described above, the route information display unit 26 can also acquire map information related to route information and display a map together with the route. The route information display unit 26 can also acquire and display post information related to the route. The posted information may be transmitted from the route guidance device 14 to the user terminal 10, or link information indicating the acquisition destination of the posted information is transmitted from the route guidance device 14 to the user terminal 10, and based on the link information. Then, the user terminal 10 may acquire post information from the post server 12.

  The present embodiment has been described above. According to the present embodiment, the cost data is updated based on the posted information, so that it is possible to provide route information that reflects the opinions of passers-by.

  In the present embodiment, when updating cost data, the basic cost registered first is not updated, but is registered as an additional cost. Therefore, it is possible to search for a route without considering the additional cost. Accordingly, for example, as illustrated in FIG. 7, it is possible to output route information regarding a route that considers only the basic cost and a route that considers the additional cost in addition to the basic cost.

  In this embodiment, when registering an additional cost, it is possible to register a condition for applying the additional cost. This makes it possible to register additional costs under various conditions and to provide various route information according to user needs.

  Moreover, in this embodiment, it is possible to display the posting information corresponding to the links constituting the route together with the route information. This makes it possible to know the route recommended based on the posting information and what kind of posting the passerby made on the route.

  Note that this embodiment is intended to facilitate understanding of the present invention and is not intended to limit the present invention. The present invention can be changed / improved without departing from the spirit thereof, and the present invention includes equivalents thereof.

  For example, in the present embodiment, the route guidance device 14 is different from the user terminal 10, but the user terminal 10 itself may have the function of the route guidance device 14.

DESCRIPTION OF SYMBOLS 10 User terminal 12 Posting server 14 Route guidance device 20 Search condition reception part 22 Route information acquisition part 24 Route information storage part 26 Route information display part 30 Posting control part 32 Posting information storage part 40 Path information database 42 Posting information acquisition part 44 Posting Information storage unit 46 Analysis dictionary storage unit 48 Posting information analysis unit 50 Analysis information storage unit 52 Cost update unit 54 Route information output unit 56 Map information database

Claims (12)

A path information storage unit that stores link data indicating links constituting a path and cost data indicating costs in the links in association with each other;
A posting information acquisition unit that acquires posting information posted from a user terminal from a server and stores the posting information in a posting information storage unit;
Referring to the posted information storage unit, based on the content of each posted information, specifying a link corresponding to the posted information and analyzing whether the cost of the link should be increased or decreased; and
A cost data update unit that updates the cost data stored in the route information storage unit based on the analysis result of the post information analysis unit;
A route information output unit that receives a route search condition, refers to the route information storage unit, and outputs route information indicating a route that satisfies the route search condition;
A route guidance device comprising: The route guidance device according to claim 1,
The posted information analysis unit analyzes whether the cost of the identified link should be increased or decreased based on the content of text data included in the posted information.
Route guidance device. The route guidance device according to claim 1 or 2,
The posted information analysis unit specifies a link corresponding to the posted information based on position information included in the posted information.
Route guidance device. The route guidance device according to claim 1 or 2,
The posted information analysis unit identifies a link corresponding to the posted information based on the content of text data included in the posted information.
Route guidance device. The route guidance device according to any one of claims 1 to 4,
The cost data includes basic cost data indicating a basic cost in a link, and additional cost data indicating an additional cost added to the basic cost,
The cost data update unit updates the additional cost data stored in the route information storage unit based on the analysis result of the posted information analysis unit.
Route guidance device. The route guidance device according to claim 5,
The posted information analyzing unit determines an additional condition that is a condition for applying the additional cost based on the content of the posted information, and associates the additional condition data indicating the additional condition with the additional cost data in the route. Stored in the information storage unit,
The route information output unit outputs route information that satisfies the route search condition based on the basic cost data, the additional cost data, and the additional condition data.
Route guidance device. The route guidance device according to claim 6,
The posted information analysis unit determines the additional condition based on date and time information included in the posted information.
Route guidance device. The route guidance device according to claim 6 or 7,
The posted information analysis unit determines the additional condition based on the content of text data included in the posted information.
Route guidance device. The route guidance device according to any one of claims 6 to 7,
The posted information analysis unit determines the additional condition based on a user attribute included in the posted information.
Route guidance device. The route guidance device according to any one of claims 5 to 9,
The route information output unit outputs route information satisfying the route search condition based on the basic cost data, and outputs route information satisfying the route search condition based on the basic cost data and the additional cost data. ,
Route guidance device. The route guidance device according to any one of claims 1 to 10,
The route information output unit outputs the posted information corresponding to a link constituting the route indicated by the route information together with the route information.
Route guidance device. Computer
The link data indicating the link constituting the route and the cost data indicating the cost in the link are associated with each other and stored in the route information storage unit,
The posting information posted from the user terminal is acquired from the server and stored in the posting information storage unit.
Refer to the posted information storage unit, based on the content of each posted information, identify the link corresponding to the posted information, and analyze whether the cost of the link should be increased or decreased,
Based on the analysis result of the posted information, update the cost data stored in the route information storage unit,
Receiving a route search condition, referring to the route information storage unit, and outputting route information indicating a route satisfying the route search condition;
Route guidance method.

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