JP2013089144A - Information retrieval device and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To output a search result adapted to a type of disaster that a user is actually facing in response to a search by a disaster-related keyword such as "refuge".
The present invention determines whether a search keyword input from a user is a disaster-related keyword by referring to disaster-related keyword storage means, obtains the user's position, and refers to the administrative district geographic storage means. The administrative district where the user exists is determined, the administrative district disaster storage means is referenced based on the administrative district, the disaster facing the user is identified, and the disaster type is determined based on the disaster corresponding to the administrative district. With reference to the refuge storage means, the administrative area and the evacuation place corresponding to the disaster are output.
[Selection] Figure 1

Description

  The present invention relates to an information search apparatus and program, and more particularly to an information search apparatus and program that can be adapted to disaster types, including search engines on the Internet.

  In recent years, with the spread of the Internet, the importance of a system and a service for accurately retrieving information required by a user from an enormous document group on the Internet has increased.

  In general, in a search service, the degree of matching between a search keyword and a document based on the number of search keywords input by a user included in a search target document or a link anchor text from another document to the document, The output order of the information search is determined from the importance of the document such as how much it is referenced from another document (for example, see Non-Patent Documents 1 to 3).

  Furthermore, as an information retrieval terminal device for the user to use the information retrieval system and service, not only a personal computer fixedly installed in a home or office but also a high-function mobile phone that can be connected to the Internet, or wireless packet communication Web document retrieval using a mobile computer that can be connected to the Internet via a network or a public wireless LAN is also frequently performed.

  In this case, the location when the user performs the search is measured or estimated by the GPS receiver function provided in the terminal device or the identification of the radio base station used by the terminal device for communication. Appropriate search results are also output.

  As a result, when the user searches with the keyword “evacuation center”, a service such as outputting a list of shelters near the position where the user is currently located or a map marking the shelters is realized.

  With the development of this technology, information retrieval services using cellular phones and the like are increasingly used by users as their own action guidelines, and are particularly important when users are in places that are not familiar with the land.

S Robertson, H Zaragoza, M Taylor 'Simple BM25 extension to multiple weighted fields' Proceedings of the thirteenth ACM international conference on Information and knowledge management, 2004. Lawrence Page, Sergey Brin, Rajeev Motwai, Terry Winograd, 'The PageRank Citation Ranking: Bringing Order to the Web', 7th International World Wide Web conference (WWW98). Jon M. Kleinberg, 'Authoritative sources in a hyperlinked environment', Journal of the ACM (JACM), v.46 n.5, p.604-632, Sept. 1999

  However, the conventional information retrieval system has the following problems.

  When a search request is made with a disaster-related keyword such as “evacuation center” as the search keyword, a list of shelters close to the current location of the user can be output, but an appropriate shelter is output for the type of disaster Not done.

  Specifically, low-level shelters are inappropriate for tsunami disasters, and open spaces such as the ground are inappropriate for typhoons, but current information search systems use the degree of match between location information and search keywords. As a result of outputting the search result information based on the above, there is a problem that the information on the inappropriate shelter as described above is also output.

  The present invention has been made in view of the above points, and in response to a search using a disaster-related keyword such as “evacuation shelter”, information that enables a search result output adapted to the type of disaster that the user is currently facing. It is an object to provide a search device and a program.

In order to solve the above problems, the present invention (Claim 1) is an information search apparatus for presenting an evacuation site according to the type of disaster,
Storage means for storing information according to the location of the shelter and the type of disaster for each administrative area;
Search means for searching the storage means according to a keyword and location information input from a user, and providing an evacuation site corresponding to the location information and disaster type of the user;
Have

Further, the present invention (Claim 2), as the storage means,
Administrative region geographic storage means that stores administrative regions and geographical information in association with each other;
Disaster-related keyword storage means storing disaster-related keywords;
A disaster type corresponding evacuation place storage means storing a refuge corresponding to a disaster type,
Administrative district disaster storage means that stores disaster status for each administrative district,
Have
As the search means,
Disaster-related keyword determination means for determining whether a search keyword input by a user is a disaster-related keyword with reference to the disaster-related keyword storage means;
User position acquisition means for acquiring a user's position and determining the administrative district in which the user exists with reference to the administrative district geographic storage means;
Based on the administrative district, referring to the administrative district disaster storage means, a user-facing disaster type determining means for identifying a disaster that the user is facing,
Evacuation site determination means for outputting the administrative area and the evacuation area corresponding to the disaster based on the disaster corresponding to the administrative area and referring to the disaster type refuge storage means.

In the present invention (Claim 3), as the storage means,
Administrative region geographic storage means that stores administrative regions and geographical information in association with each other;
Disaster-related keyword storage means storing disaster-related keywords;
A disaster type corresponding evacuation place storage means storing a refuge corresponding to a disaster type,
Administrative district disaster information source storage means storing information of information sources that provide disaster status for each administrative district;
Have
As the search means,
Disaster-related keyword determination means for determining whether a search keyword input by a user is a disaster-related keyword with reference to the disaster-related keyword storage means;
User position acquisition means for acquiring a user's position and determining the administrative district in which the user exists with reference to the administrative district geographic storage means;
Based on the administrative district, referring to the administrative district disaster information source storage means, search for an information source that provides disaster information corresponding to the administrative district, access the information source, and face the user Disaster information acquisition means to identify the disaster
Evacuation site determination means for outputting the administrative area and the evacuation area corresponding to the disaster based on the disaster corresponding to the administrative area and referring to the disaster type refuge storage means.

  Further, according to the present invention (Claim 4), a means for calculating a distance between the position of the user and the position of the evacuation place to the evacuation place determination means and selecting an evacuation place where the distance is a predetermined value or less. Including.

  According to the present invention (Claim 5), the geographical location information of the prefectures and municipalities to be stored in the administrative district geographic storage means is closed curve data connecting the boundaries of the administrative districts with a plurality of latitudes and longitudes, or The closed curve data format is a combination of a single point or a plurality of latitude and longitude points and a vector.

  The present invention (Claim 6) is an information search program for causing a computer to function as each unit of the information search apparatus according to any one of Claims 1 to 5.

  According to the invention of claim 2, when a user searches for information with a keyword related to a disaster, the location information of the user refers to a DB prepared in advance for the type of disaster that the user is currently facing. This makes it possible to present to the user an evacuation site that is close to the current position of the user and adapted to the disaster type from the disaster type correspondence evacuation site database prepared in advance.

  According to the invention of claim 3, instead of preparing in advance the disaster type faced for each position, the disaster type information is acquired from an external information source when requested by the user. In addition, it is possible to present to the user an evacuation center that is close to the current position of the user and adapted to the disaster type from the disaster type refuge database prepared in advance.

It is a block diagram of the information search system in the 1st Embodiment of this invention. It is a sequence chart of the operation | movement in the 1st Embodiment of this invention. It is a block diagram of the information search system in the 2nd Embodiment of this invention. It is a sequence chart of operation in a 2nd embodiment of the present invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited to the following embodiments.

[First embodiment]
FIG. 1 shows the configuration of an information search system according to the first embodiment of the present invention.

  The system shown in FIG. 1 includes an information search terminal 1 and an information search server 2.

  An information search terminal 1 on which a user of an information search service searches includes a position measurement unit 12 for acquiring current position information. 1 further includes a keyboard 11 as a search keyword input means and a display 13 as a search result display means, but these include a voice recognition function, a handwriting input pad, and a display 13 instead of the keyboard 11. Instead, any search keyword input function and search result output function such as a document reading output function may be used. The information retrieval terminal 1 normally includes a CPU, a memory, a communication function, etc., but is not shown in the figure because it is not necessary for the description of the present invention. The information search terminal 1 may be a general personal computer, an information home appliance, a portable communication terminal, or the like as long as it includes the position measurement unit 12.

  The information search server 2 includes a disaster-related keyword table 21 in which disaster-related keywords are stored in advance, an administrative geography table 23 in which geographical locations of prefectures and municipalities are stored in advance, and an administrative district in which disaster occurrence information or disaster prediction information for each administrative district is registered. Disaster table 26, disaster type shelter table 28 that stores information on the type and location of disaster to be adapted in advance as attributes for each shelter, disaster-related keyword determination unit 22, user position acquisition unit 24, user faced disaster type determination unit 25. A shelter determination unit 27 is provided.

  The disaster related keyword table 21, the administrative geography table 23, the administrative district disaster table 26, and the disaster type shelter table 28 are stored in a storage medium such as a hard disk.

  The disaster-related keyword determination unit 22 refers to the disaster-related degree keyword table 21 and determines whether or not the search keyword transmitted from the information search terminal 1 is a keyword related to a disaster.

  The user location acquisition unit 25 refers to the location information transmitted from the information search terminal 1 and the administrative district geography table 23 to determine the administrative district in which the user is currently located.

  The user-facing disaster type determination unit 25 determines the type of disaster that the user is actually facing from the preliminary administrative district disaster information table 26 and the determination result of the administrative district in which the user determined by the user position acquisition unit 25 exists.

  The shelter determination unit 27 refers to the disaster type-specific shelter table 28, the determination result of the user-facing disaster type determination unit 25, and the user location information, and a list of shelters or shelters to be output to the user To decide.

  When the disaster-related keyword determination unit 22 determines that the search keyword transmitted from the information search terminal 1 is a keyword related to a disaster, the disaster-related keyword determination unit 22 starts the operation of the other functional parts. When not related, it is also preferable to provide a normal information search service by transmitting a search keyword to a normal information search function outside the scope of the present invention. In addition, when the search keyword is related to a disaster, in addition to outputting the shelter information by operating the other functional parts described above, the search keyword is transmitted to the normal information search function, and the normal information search service It is also preferable to provide refuge information at the same time.

  As another embodiment, the position measurement unit 12 may not exist inside the terminal device, but may exist on a communication network that connects the information terminal device 1 and the information search server 2.

  The operation of the information search system according to the embodiment of the present invention will be described below with reference to FIG.

  FIG. 2 is a sequence chart of the operation in the first embodiment of the present invention.

  Step 101) The search service user inputs a search keyword using the keyboard 11 of the information search terminal 1 and transmits it to the information search server 2. At this time, the information search terminal 1 measures the current position by the position measurement unit 12 and transmits it to the information search server 2. The current position measurement method may be anything such as a method that uses GPS generally used in mobile communication terminal devices or a method that uses the location DB of a nearby wireless LAN access point, and is related to the essence of the present invention. do not do.

  Step 102) The disaster-related keyword determination unit 22 of the information search server 2 refers to the disaster-related keyword table 21 in which keywords related to the disaster selected by the service provider, such as “evacuation center” and “evacuation”, are stored in advance. When the search keyword received from 1 matches the keyword stored in the disaster-related keyword table 21, the operation of the other functional parts of the information search server 2 is started. Here, the keyword match may be a complete match, or the disaster-related keyword table 21 may store a pattern using a regular expression and match the pattern.

  Step 103) The user position acquisition unit 24 determines the administrative district in which the user actually exists by checking the location information received from the information terminal device 1 against the administrative district geography table 23 in which the geographical locations of prefectures and municipalities are stored in advance. The geographical location information of prefectures and municipalities stored in the administrative district geography table 23 may use, for example, closed curve data that connects administrative boundaries with points composed of a plurality of latitudes and longitudes, or a single or a plurality of latitudes. It may be in any format such as closed curve data combining a point consisting of longitude and a vector. After determining the administrative district in which the user actually exists, the user position acquisition unit 24 hands over the administrative district of the determination result to the user-facing disaster type determination unit 25.

  Step 104) The user-facing disaster type determination unit 25 obtains the administrative district determination result in which the user handed over from the user position acquisition unit 24 to the administrative district disaster information table 26 in which the disaster occurrence information or the disaster prediction information for each administrative district is registered in advance. The type of disaster that the user is actually facing is determined and handed over to the shelter determination unit 27. The operation of registering disaster occurrence information or disaster prediction information for each administrative district in advance in the administrative district disaster information table 26 is out of the scope of this claim. There can be a method of acquiring and registering. As another example, it is also preferable to register seismic intensity information and rainfall information issued by the Japan Meteorological Agency or private organizations.

  Step 105) The shelter determination unit 27 uses the disaster type currently faced by the user handed over from the user-facing disaster type determination unit 25 and the location information received from the information search terminal 1 to apply the type of disaster to be applied in advance. A single or plural existing in the vicinity of the current position of the user in the evacuation shelter adapted to the disaster type facing the user from the disaster type evacuation shelter table 28 storing the information of the existing location as an attribute for each evacuation site A shelter is selected and information on the shelter is transmitted to the information search terminal 1. As an example of the selection method, first, the distance between both is calculated from the position information of the user and the position information of the refuge, the evacuation group having a predetermined value, for example, 10 km or less, is selected, There is a method of narrowing down to the evacuation centers registered in the evacuation table 28 for each disaster type if the disaster type that the user is facing further corresponds to the disaster type. The information of the shelter to be transmitted is not related to the essence of the present invention and will not be described in detail. However, it is preferable to include the name of the shelter and the applicable disaster type, and it is preferable to include an address and a contact telephone number. It is also preferable to include a map that clearly indicates the location of the shelter based on certain location information from the latitude and longitude of the location.

  Step 106) The information search terminal 1 displays the information on the refuge received from the refuge determination unit 27 on the display 13.

[Second Embodiment]
FIG. 3 shows a configuration of an information search system according to the second embodiment of the present invention.

  In the figure, the same components as those in FIG.

  The system shown in FIG. 3 does not include the administrative district disaster information table 26 in which the disaster occurrence information or the disaster prediction information for each administrative district is registered in advance in the first embodiment shown in FIG. Information sources that are out of range and capable of acquiring disaster occurrence information or disaster forecast information are specified from the administrative district disaster information source table 210 registered in advance for each administrative district and the external information source 30 registered in the administrative district disaster information source table 210. Including a disaster information acquisition unit 29 for acquiring the disaster information. The administrative district disaster information source table 210 is held in a storage medium such as a hard disk like the other tables.

  FIG. 4 is a sequence chart of the operation in the second embodiment of the present invention.

  The operation of the information search system in the present embodiment is different from the flow of FIG. 2 in the operation of the user-facing disaster type determination unit 25, and the administrative district determination result in which the user actually handed over from the user location acquisition unit 24 is present for each administrative district in advance. Instead of referring to the disaster information table 26 in which the disaster occurrence information or the disaster prediction information is registered, the determination result of the administrative district is delivered to the disaster information acquisition unit 29. The disaster information acquisition unit 29 determines the external information source 30 from which the disaster information is to be acquired by referring to the administrative district disaster information source table 210 based on the administrative district judgment result (step 204), and accesses the external information source 30 to obtain the disaster information. (Step 205) and handed over to the user-facing disaster type determination unit 27.

  Although the external information source 30 is outside the scope of the present invention, for example, a weather warning and weather warning information page for each administrative district existing in the HTTP server of the Japan Meteorological Agency can be considered. In this case, the means for the disaster information acquisition unit 29 to acquire the disaster information from the external information source 30 may use an information acquisition method by HTTP communication that is generally used on the Internet.

  Other operations are the same as those in FIG.

  As described above, in the present invention, when a search keyword is related to a disaster, information on an evacuation site suitable for the type of disaster that the user is actually facing is presented to the user from the current position of the user. It becomes possible.

  It is possible to construct the operation of each component of the information search server 2 shown in FIG. 1 and FIG. 3 as a program, and install and execute it on a computer used as the information search server.

  The present invention is not limited to the above-described embodiments, and various modifications and applications can be made within the scope of the claims.

DESCRIPTION OF SYMBOLS 1 Information search terminal 2 Information search server 11 Keyboard 12 Position measurement part 13 Display 21 Disaster related keyword table 22 Disaster related keyword determination part 23 Administrative region geography table 24 User position acquisition part 25 User facing disaster type determination part 26 Administrative region disaster table 27 Refuge Determination unit 28 Disaster type shelter table 29 Disaster information acquisition unit 30 External information source 210 Administrative region disaster information source table

Claims (6)

An information retrieval device for presenting an evacuation site according to the type of disaster,
Storage means for storing information according to the location of the shelter and the type of disaster for each administrative area;
Search means for searching the storage means according to a keyword and location information input from a user, and providing an evacuation site corresponding to the location information and disaster type of the user;
An information retrieval apparatus comprising: As the storage means,
Administrative region geographic storage means that stores administrative regions and geographical information in association with each other;
Disaster-related keyword storage means storing disaster-related keywords;
A disaster type corresponding evacuation place storage means storing a refuge corresponding to a disaster type,
Administrative district disaster storage means that stores disaster status for each administrative district,
Have
As the search means,
Disaster-related keyword determination means for determining whether a search keyword input by a user is a disaster-related keyword with reference to the disaster-related keyword storage means;
User position acquisition means for acquiring a user's position and determining the administrative district in which the user exists with reference to the administrative district geographic storage means;
Based on the administrative district, referring to the administrative district disaster storage means, a user-facing disaster type determining means for identifying a disaster that the user is facing,
Based on the disaster corresponding to the administrative area, referring to the disaster type evacuation area storage means, the evacuation area determination means for outputting the administrative area and the evacuation area corresponding to the disaster;
The information search device according to claim 1, comprising: As the storage means,
Administrative region geographic storage means that stores administrative regions and geographical information in association with each other;
Disaster-related keyword storage means storing disaster-related keywords;
A disaster type corresponding evacuation place storage means storing a refuge corresponding to a disaster type,
Administrative district disaster information source storage means storing information of information sources that provide disaster status for each administrative district;
Have
As the search means,
Disaster-related keyword determination means for determining whether a search keyword input by a user is a disaster-related keyword with reference to the disaster-related keyword storage means;
User position acquisition means for acquiring a user's position and determining the administrative district in which the user exists with reference to the administrative district geographic storage means;
Based on the administrative district, referring to the administrative district disaster information source storage means, search for an information source that provides disaster information corresponding to the administrative district, access the information source, and face the user Disaster information acquisition means to identify the disaster
Based on the disaster corresponding to the administrative area, referring to the disaster type evacuation area storage means, the evacuation area determination means for outputting the administrative area and the evacuation area corresponding to the disaster;
The information search device according to claim 1, comprising: The evacuation site determination means includes
The information search device according to claim 2, further comprising means for calculating a distance between the position of the user and the position of the evacuation place and selecting an evacuation place whose distance is equal to or less than a predetermined value. Geographical location information of prefectures and municipalities stored in the administrative district geographic storage means includes closed curve data connecting the boundaries of administrative districts with points composed of a plurality of latitudes and longitudes, or points composed of a single or a plurality of latitudes and longitudes. The information search device according to claim 2 or 3, wherein a closed curve data format is formed by combining vectors. Computer
An information search program for functioning as each unit of the information search apparatus according to claim 1.

Images