JP2009271593A - Information retrieval device, information retrieval method and computer program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently and smoothly search for desired service information from a predetermined information group to be retrieved by eliminating duplicate retrieval or reading error of service information. <P>SOLUTION: This device 10 includes a service index information storage part F1 storing a character string obtained without performing Kana conversion by appropriately dividing attribute information of a retrieval object included in the service information and retrieval position specification information for specifying a location of the service information in association with each other. Thereby, a character string information reception part 11 receives input of a word including hiragana, katakana, kanji, alphabetic character, numerical character or symbol, or a character string composed thereof, and a retrieval position information specification part 12 specifies the retrieval position specification information in reference to the service index information storage part. A service information retrieval part 13 specifies and extracts the service information based on the retrieval position specification information, and a service information output part 14 outputs the extracted service information. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a search technique for searching for desired service information, and more specifically, to efficiently and smoothly search for service information corresponding to a designated (input) character string from a predetermined information group to be searched. The present invention relates to an information search apparatus, an information search method, and a computer program for information search.

  Conventionally, POIs (Point Of Interest) such as gasoline stunts, convenience stores, ramen stores, hotels and inns, and famous facilities and resorts are targeted for search, and their names, addresses, and introductory articles (text text) ) And the like, and an information retrieval device that displays information on POI as service information is known. There is also known a car navigation device (hereinafter referred to as “car navigation”) that has this information search device function and displays the information together with an electronic map.

  In such an information search apparatus, when searching for desired service information from the search data, a so-called 50-sound search is performed in which a search is performed by inputting a character string using 50 sounds of kana characters. Accordingly, in car navigation systems, processing for searching service information based on a 50-sound search is generally performed based on the reading of the POI name.

However, in the 50-sound search based on the reading, even if the POIs are different, if the “reading” is the same, the search is duplicated, and the search results are more than necessary. That is, for example, in “Arai Shoten”, “Arai Shoten”, “Arai Shoten”, and “Arai Shoten”, the readings are “Araishoten” or “Araisho Ten”, so the 50 sounds based on the readings. In search, all of these are output as search results.
Therefore, it takes time to search for a desired search result from many search results, and desired service information cannot be obtained efficiently. In addition, an information retrieval apparatus such as a car navigation system cannot present a large number of options on one screen due to the limitation of the size of the display unit that outputs and displays the retrieval result. For this reason too, it is difficult to find a desired search result if there are too many search results, and the desired service information cannot be obtained efficiently.

Further, in the 50-sound search based on this reading, if the reading of the search object (POI) is incorrect, the desired service information cannot be searched. That is, for example, if there is “Kakuda Shoten” whose name is “Kakuta Shoten”, you may have mistakenly entered “Kadota Shoten” or “Sumida Shoten”. If “Tsunoda Shoten” is entered, even if there is “Kakuda Shoten” in the predetermined information group to be searched, the desired service information cannot be obtained as a search result.
Therefore, there is an inconvenience that it is necessary to perform a search many times with different readings until the readings are correctly matched, and desired service information cannot be obtained efficiently.

  In addition, since the conventional information search device searches for service information based on readings, when searching for POI addresses, introductory articles, etc., it is necessary to replace them with 50-sound readings. It was very annoying and difficult.

Therefore, some means for efficiently obtaining desired service information have been proposed.
For example, if a keyword that is assumed to be effective instead of a search keyword is stored and information required by the user is not found as information corresponding to the search keyword, the search keyword is used. There is a means for reading out a substitute keyword and performing a search again (see Patent Document 1).
There is also a means for dividing input information composed of sentences or a plurality of words into word levels, extracting predetermined words from those words, and searching for POI information based on these words (patent) Reference 2).
JP 2002-24261 A JP 2005-216961 A

  However, in any of the techniques described in Patent Documents 1 and 2, the problem of duplicate search and misread search in the search of service information based on reading is solved together, and desired service information is searched efficiently and smoothly. It does not make it possible.

In addition, some web applications that perform an information retrieval service using the web use a built-in database or the like to perform an appropriate search according to an input character string. However, in a limited environment such as a car navigation system, it is difficult to introduce an embedded database due to data size restrictions.
As described above, a search means that eliminates duplicate search and misread search in reading service information and can efficiently and smoothly search for desired service information from a predetermined information group to be searched is currently available. Not proposed.

  The present invention has been made in view of the above circumstances, eliminates duplicate searches and misread searches in reading service information, and efficiently and smoothly searches for desired service information from a predetermined information group to be searched. The purpose is to provide a mechanism capable of performing a search.

  An information search apparatus according to the present invention is an information search apparatus that performs a search for efficiently and smoothly searching service information corresponding to a specified character string from a predetermined information group to be searched, and is included in the service information First storage means for appropriately dividing the attribute information of the search object and storing the character string obtained without performing kana reading conversion and the search position specifying information for specifying the storage position of the service information in association with each other; Second storage means for storing the search position specifying information and the service information in association with each other, and a language such as hiragana, katakana, kanji, alphabet, numbers, symbols, or a combination thereof for searching the service information A character string information accepting means for accepting an input of a character string comprising: a first memory device based on the character string accepted by the character string information accepting means; Based on the search position information specifying means for specifying the search position specifying information with reference to the search position specifying information specified by the search position information specifying means, the service information is specified by referring to the second storage means and extracted. And service information output means for outputting the service information extracted by the service information search means.

  In the information search apparatus of the present invention, the first storage unit may store a morpheme obtained by morphological analysis of the attribute information as a character string.

  Also, the information search method of the present invention appropriately divides the attribute information of the search object included in the service information, and specifies the character string obtained without converting the kana reading and the search position specifying that specifies the storage position of the service information A first storage means for storing information in association with each other, and a second storage means for storing the search position specifying information and the service information in association with each other. An information search method for efficiently and smoothly searching for service information corresponding to a specified character string from a predetermined information group, wherein the information search device searches for the service information using hiragana, A first step of accepting an input of a character string consisting of a language such as katakana, kanji, alphabet, numbers, symbols, or a combination thereof; A second step of specifying search position specifying information with reference to the first storage means based on the character string received in the first step; and a search position specified in the second step in the information search device. A third step of identifying and extracting service information with reference to the second storage means based on the identification information; and a fourth step of outputting the service information extracted in the third step from the information search device. It is characterized by including.

  In the information search method of the present invention, in the information search device, the first storage means stores a morpheme obtained by morphological analysis of the attribute information as a character string, and the second step includes the first step. Based on the character string received in one step, the search position specifying information may be specified with reference to the first storage unit that stores the morpheme obtained by morphological analysis of the attribute information as a character string.

  Further, the computer program of the present invention appropriately divides the attribute information of the search object included in the service information, and the search position specifying information for specifying the character string obtained without converting the kana reading and the storage position of the service information A first storage means for storing the information in association with each other, a second storage means for storing the search position specifying information and the service information in association with each other, and a predetermined information group to be searched In order to execute a search for efficiently and smoothly searching for service information corresponding to a specified character string, hiragana, katakana, kanji, alphabet, numbers, symbols, etc. Means for receiving an input of a character string consisting of a language or a combination thereof, and the first storage device based on the received character string Means for specifying the search position specifying information with reference to, means for specifying and extracting service information with reference to the second storage means based on the specified search position specifying information, and outputting the extracted service information It is made to function as a means.

  In the computer program of the present invention, the first storage means stores the morpheme obtained by morphological analysis of the attribute information as a character string, and the attribute information is based on the received character string. The morpheme obtained by performing morpheme analysis may be made to function as means for specifying search position specifying information with reference to the first storage means for storing the morpheme as a character string.

The information search device of the present invention appropriately divides the attribute information of the search object included in the service information, and obtains a character string obtained without performing kana reading conversion, search position specifying information for specifying the storage position of the service information, Are stored in association with each other. Therefore, it is not necessary to replace the attribute information included in the service information with 50-sound readings, and characters consisting of a language such as hiragana, katakana, kanji, alphabet, numbers, symbols, or a combination thereof are searched for appropriately divided character strings. Search by column becomes possible.
Accordingly, it is possible to eliminate a duplicate search or a misread search in reading service information and perform a search for efficiently and smoothly searching for desired service information from a predetermined information group to be searched.

Hereinafter, an example of an information search apparatus, an information search method, and a computer program for information search according to the present invention will be described with reference to the drawings.
An information search apparatus according to the present invention (hereinafter referred to as “this apparatus”) is an apparatus that performs a search for quickly and accurately searching service information corresponding to a specified character string from a predetermined information group to be searched.

FIG. 1 is a schematic diagram illustrating an example of an information search system (hereinafter referred to as “the present system”) using the apparatus 10.
As shown in FIG. 1, the system can be configured by the apparatus 10, a display unit 20, and an input unit 30.
The display unit 20 is a display (monitor) that outputs / displays a character string that instructs the apparatus 10 to perform a search and a search result by the apparatus 10.
The input unit 30 is a command input button for giving various instructions to the apparatus 10.

FIG. 2 is a schematic diagram showing a navigation device 1 realized by using this system.
In FIG. 2, the input unit 30 is stacked on the screen of the display unit 20.
As shown in FIG. 2, the input buttons constituting the input unit 30 are a character input button 31, a “katakana” button 32 for inputting or converting a katakana character, an “ABC” button 33 for inputting or converting an alphabet, "Small" button 34 for switching to input or inputting a muddy point "" or a semi-voiced point "゜", "123" button 35 for inputting a number, and converting the input kana character to kanji A “conversion” button 36, an input character string confirmation, an “OK” button 37 for instructing execution of a search based on a character string composed of received character information, and the like.

The character input button 31 performs a process of transmitting character input information for searching for relevant information. As the character input button 31, for example, a GUI (Graphic User Interface) screen simulating a Hiragana keyboard is displayed on the display unit 20, and the user selects the Hiragana one character at a time with the cursor or finger on the GUI screen. A desired character string can be input.
In FIG. 2, a character input button 31 is a button for inputting various characters of “A”, “KA”, “SA”..., A button for inputting a punctuation mark “.”, A button for inputting a reading “ It is composed of buttons for inputting “−”.

The display unit 20 displays a display column 21 for outputting / displaying character information input from the character input button 31.
In FIG. 2, a character string for search such as “Arai Shoten” is displayed in the display field 21.

FIG. 3 is a block diagram illustrating an example of the apparatus 10.
As shown in FIG. 3, the apparatus 10 includes a service index information storage unit F1, a service information storage unit F2, a character string information reception unit 11, a search position information specifying unit 12, a service information search unit 13, It has at least a service information output unit 14 and a control unit C. Note that reference symbol B in the figure is a bus for transmitting control signals, data, and the like in the apparatus 10.

The apparatus 10 may be an information processing apparatus, and is realized by, for example, a mobile personal computer, a PND (Portable Navigation Device), a dedicated device, a mobile phone, or the like. The apparatus 10 includes a CPU (Central Processing Unit), a program storage unit, an auxiliary storage device, an OS (Operating System), and the like (not shown).
The CPU is means for controlling and controlling each component of the apparatus 10 and executing program processing according to the computer program stored in the program storage unit. The program storage unit is constituted by a ROM (Read Only Memory), a RAM (Random Access Memory), or the like, and is a means for storing various computer programs used by the apparatus 10.

  The service index information storage unit F1 appropriately divides the attribute information of the search object included in the service information, and obtains a character string obtained without performing kana reading conversion, search position specifying information for specifying the storage position of the service information, , Are stored in association with each other. Here, the attribute information refers to service information that can specify the search object such as the name, address, and introduction text of the search object.

  The character string is a word that can be an attribute representing the feature of the service information. This character string may be 1-character information, may be 2-character information, and may be n-character information. Therefore, the character string obtained by appropriately dividing the attribute information and converting it to kana reading is composed of a language such as hiragana, katakana, kanji, alphabet, numbers, symbols, or a combination thereof.

  The search position specifying information is so-called offset information. Therefore, when the character string is one character, this offset information immediately becomes search position specifying information for specifying the storage position of the service information. When the character string is composed of two characters, the offset information is information for specifying the storage position of the second character, and the offset information for the second character information is search position specifying information for specifying the storage position of the service information. . And when a character string consists of n characters, the offset information with respect to the last character information becomes the search position specifying information for specifying the storage position of the service information.

FIG. 4 is a diagram illustrating an example of information stored in the service index information storage unit F1.
For example, the search position specifying file shown in FIG. 4 indicates that a file is configured by associating character string information with search position specifying information (offset information). In FIG. 4, the character string information and the search position specifying information are shown to be associated from the beginning. However, as described above, the offset information varies depending on the number of character information constituting the character string. The offset information for the last character string is the search position specifying information.
Therefore, in the present apparatus 10, the search position specifying information can be found from the character string as it is included in the service information by the service index information storage unit F1.

In the service index information storage unit F1, for example, morphemes obtained by morphological analysis of attribute information may be stored as character strings. Morphological analysis is one of the basic technologies of natural language processing using a computer such as a computer. A sentence written in natural language is divided into the smallest units that have meaning in the language, that is, morpheme strings. Refers to the task of determining part of speech.
By using morphemes obtained by morphological analysis in this way as character strings, it is possible to search not only for POI names but also for text information such as POI addresses and introduction texts. Moreover, since the attribute information such as the POI name, address, and introductory text can be used as a search target together, the search can be performed efficiently.

Here, an example in which a morpheme obtained by morphological analysis is a character string can be shown in FIGS. FIG. 8 is a schematic diagram showing a character string when a morphological analysis is performed on the name of a POI that is a search target, and FIG. 9 shows a character string when an introduction sentence of a POI that is a search target is analyzed. It is a schematic diagram.
In FIG. 8A, there is “Tokyo Family Land” as the name of POI. When this is analyzed, it is divided into three morphemes such as “Tokyo”, “Family”, and “Land”, and each of these morphemes is stored in service index information storage. It is shown to be used as a character string in the part F1. Note that any of these character strings can specify search position specifying information for searching service information of “Tokyo Family Land”.
Also, in FIG. 8B, there is “Idaho French Fries Shinjuku East Store” as the name of POI. When this is analyzed, it is divided into five morphemes such as “Idaho” “Fried” “Potato” “Shinjuku” “East Exit”. It is shown that these morphemes are respectively used as character strings in the service index information storage unit F1. Note that any of these character strings can specify search position specifying information for searching for service information of “Idaho Fried Potato Shinjuku East Entrance”.

  In addition, in FIG. 9, “Arai Shoten” is an introductory sentence with POI as “Arai Shoten, where the Bengara-colored storehouse is a soy sauce brewer. There are nine morphemes such as "Edo", "Townscape", "Hikida", "Bengara", "Soy Sauce Brewery", "Arai Shoten", "Holidays", "Udonya" and "Sales". It is shown that these morphemes are respectively used as character strings in the service index information storage unit F1. Note that any of these character strings can specify search position specifying information for searching for service information of “Arai Shoten”.

  In the service index information storage unit F1, in order to improve the rate of search, that is, the so-called hit rate, all characters are determined from the POI name and important words are determined from the text such as the POI introduction text. It is desirable to adopt only possible characters as index strings.

  The service information storage unit F2 is means for storing the search position specifying information and the service information in association with each other. The service information refers to attribute information about POI (Point Of Interest) such as gasoline stunts, convenience stores, ramen shops, hotels and inns, famous facilities, and resorts. Therefore, the present apparatus 10 can perform a search for specifying service information based on the search position specifying information.

FIG. 5 is a diagram illustrating an example of information stored in the service information storage unit F2.
For example, the service information search file shown in FIG. 5 indicates that the search position specifying information and attribute information such as the POI name and address, introduction text (text article), and telephone number are associated to form a file. . The introductory text here may include word-of-mouth information on the web.
Accordingly, in the present apparatus 10, the service information storage unit F2 can know the service information of the search object from the search position specifying information.

In order to search for service information, the character string information accepting unit 11 performs a process of accepting input of a character string composed of languages such as hiragana, katakana, kanji, alphabet, numbers, symbols, or a combination thereof. The character string information receiving unit 11 obtains a character string that has been processed in advance to convert half-width characters to full-width characters and lower-case characters to upper-case characters in order to eliminate fluctuations in katakana, alphabets, and numbers. It is good to make it.
The character string information receiving unit 11 transmits the received character string information to the search position information specifying unit 12.

The search position information specifying unit 12 performs a process of specifying the search position specifying information with reference to the service index information storage unit F1 based on the character string received by the character string information receiving unit 11. As described above, the processing here is repeated as many times as the number of character information constituting the character string using the character string received by the character string information receiving unit 11 as it is, and the final offset information is specified as the search position specifying information. To do.
The search position information specifying unit 12 transmits the specified search position specifying information to the service information searching unit 13.

The service information search unit 13 performs a process of specifying and extracting service information with reference to the service information storage unit F2 based on the search position specifying information specified by the search position information specifying unit 12.
The service information search unit 13 transmits the extracted service information to the service information output unit 14.

  The service information output unit 14 performs processing for outputting the service information extracted by the service information search unit 13 to the display unit 30.

  The control unit C includes a CPU, a ROM, a RAM, and the like. The control unit C controls and controls each component of the apparatus 10 according to a program stored in the program storage unit, and executes a program process.

Next, an example of operation | movement of this apparatus 10 which implements the information search method performed by this apparatus 10 mentioned above is demonstrated, referring FIG. FIG. 6 is a flowchart showing an example of information search processing in the apparatus 10.
First, the character string information receiving unit 11 receives an input of a character string for searching for service information (S10).
Next, the search position information specifying unit 12 refers to the service index information storage unit F1 and specifies (searches) the offset information based on the first character information in the character string received by the character string information receiving unit 11. (S20).
After specifying the offset information for the first character information, the search position information specifying unit 12 continues to determine whether or not there is character information (S30). That is, it is determined whether or not the character string received by the character string information receiving unit 11 is two or more characters.

As a result, if the search position information specifying unit 12 determines that there is still character information (Y), the search position information specifying unit 12 continues to refer to the service index information storage unit F1 and the character string information receiving unit 11 Based on the second character information in the received character string, the offset information is specified (searched) (S40). The search position information specifying unit 12 repeats this process until there is no unsearched character information, that is, the number of characters constituting the character string.
Then, the search position information specifying unit 12 specifies the offset information specified in the last character information as the search position specifying information.

Here, the process of specifying the search position specifying information can be shown in FIG. 7, for example. FIG. 7 is a schematic diagram showing a process for specifying search position specifying information in the information search apparatus according to the present invention.
FIG. 7 shows a case where a character string “Arai Shoten” is searched.
First, “new” offset information which is first character information is specified. In FIG. 7, “new” offset information is indicated by “A0648”. Here, in the case of the character string “Arai Shoten”, since there is the second character information continuously, this offset information becomes the offset information for searching for the second character information.

  Next, based on this offset information, the offset information of “well” which is the second character information is specified. That is, the offset information of the character string including the character information of “new” and “well” is specified. In FIG. 7, the offset information of “well” is indicated by “B0182”. Here, in the case of the character string “Arai Shoten”, since there is the third character information, this offset information becomes offset information for searching for the third character information.

  Similarly, the offset information of the third character information “quotient” is specified, and further the fourth character information, that is, the “store” offset information that is the final character information in “Arai store” is specified. That is, the offset information of the character string including the character information of “new”, “well”, “quotient”, and “store” is specified. In FIG. 7, the offset information of “Store” is indicated by “N0003”. Here, since there is no character information in the case of the character string “Arai store”, this “N0003” becomes the search position specifying information for specifying the storage location of the service information of “Arai store”.

If the search position information specifying unit 12 determines that there is no more character information (N), then the service information search unit 13 refers to the service information storage unit F2 and specifies the search position information specifying unit 12 The service information corresponding to the retrieved search position specifying information is specified and extracted (S50).
Then, the service information output unit 14 outputs the service information extracted by the service information search unit 13 to the display unit 30 (S60).
Thereby, a series of operation | movement with this apparatus 10 is complete | finished.
Note that a series of these processes is executed by the control control in the control unit C.

As described above, in the present embodiment, the search for specifying the character string obtained without converting the attribute information of the search object included in the service information and converting the pseudonym and the storage position of the service information in advance. An index for storing the position specifying information in association with each other is provided, and a search is performed by using this index without using reading of a search object (POI). As a result, homonyms peculiar to Japanese can be eliminated, and duplication of search results can be eliminated. Moreover, misreading can be eliminated even if the reading of the search object is not known.
Therefore, it is possible to perform a search for efficiently and smoothly searching for service information that the user desires to acquire, and it is possible to improve the user interface in a car navigation system and the like that have many restrictions on size and operability, User satisfaction can be increased.

  The device 10 may be a device having a navigation function. In this case, although not shown, the apparatus 10 further includes means for storing map information, and means for storing location information for specifying a region or POI on the map and POI service information in association with each other. The map information can be stored in a storage medium such as a CD-ROM or DVD-ROM.

  As a result, the location information is identified based on the POI information, the corresponding road map information is identified and extracted based on the identified location information, and the service information and the road are displayed so that the service information is displayed on the road map. The map information can be superimposed and output.

  INDUSTRIAL APPLICABILITY The present invention is industrially useful in an industry that handles devices capable of searching service information requested by a user from a predetermined information group, and can display desired POI information on an electronic map by searching. It is also useful in the electrical appliance market such as navigation devices.

It is the schematic which shows an example of the information search system using the information search device which concerns on this invention. It is the schematic which shows the navigation apparatus implement | achieved by using the information search device which concerns on this invention for an information search system. It is a block block diagram which shows an example of embodiment of the information search device which concerns on this invention. It is an example which shows the structure of the search position specific file memorize | stored in the memory | storage part with which the information search device which concerns on this invention is provided. It is an example which shows the structure of the service search file memorize | stored in the memory | storage part with which the information search device which concerns on this invention is provided. It is a flowchart which shows an example of the information search process in the information search device which concerns on this invention. It is a schematic diagram which shows the specific process of the search position specific information in the information search device which concerns on this invention. It is a schematic diagram which shows the character string at the time of carrying out the morphological analysis of the name of POI used as a search target in the information search device which concerns on this invention. It is a schematic diagram which shows the character string at the time of carrying out the morphological analysis of the introduction sentence of POI used as a search target in the information search device which concerns on this invention.

Explanation of symbols

  F1 service index information storage unit (first storage unit), F2 service information storage unit (second storage unit), 10 information search device, 11 character string information reception unit, 12 search position information specifying unit, 13 service information search unit, 14 Service information output unit, 20 display unit, 30 input unit.

Claims (6)

An information search device for performing a search for efficiently and smoothly searching for service information corresponding to a specified character string from a predetermined information group to be searched,
The attribute information of the search object included in the service information is appropriately divided, and the character string obtained without performing kana reading conversion and the search position specifying information for specifying the storage position of the service information are stored in association with each other. First storage means;
Second storage means for storing the search position specifying information and the service information in association with each other;
In order to search for the service information, character string information receiving means for receiving input of a character string consisting of a language such as hiragana, katakana, kanji, alphabet, numbers, symbols, or a combination thereof;
Search position information specifying means for specifying search position specifying information with reference to the first storage means based on the character string received by the character string information receiving means;
Service information search means for specifying and extracting service information with reference to the second storage means based on the search position specifying information specified by the search position information specifying means;
Service information output means for outputting the service information extracted by the service information search means;
An information retrieval apparatus comprising: The first storage means stores a morpheme obtained by morphological analysis of the attribute information as a character string.
The information retrieval apparatus according to claim 1. The attribute information of the search object included in the service information is appropriately divided, and the character string obtained without the kana reading conversion and the search position specifying information for specifying the storage position of the service information are stored in association with each other. 1 storage means, and second storage means for storing the search position specifying information and the service information in association with each other, specified by a predetermined information group to be searched in the information search device An information search method for searching for service information corresponding to a character string efficiently and smoothly,
A first step in which the information search device accepts input of a character string consisting of a language such as hiragana, katakana, kanji, alphabet, numbers, symbols, or a combination thereof in order to search for the service information;
In the information search device, a second step of specifying search position specifying information with reference to the first storage unit based on the character string received in the first step;
In the information search device, a third step of specifying and extracting service information with reference to the second storage means based on the search position specifying information specified in the second step;
A fourth step of outputting the service information extracted in the third step from the information search device;
An information search method characterized by including: In the information search apparatus, the first storage means stores a morpheme obtained by morphological analysis of the attribute information as a character string,
The second step refers to the first storage means for storing the morpheme obtained by morphological analysis of the attribute information as a character string based on the character string received in the first step. Identify,
The information search method according to claim 3. The attribute information of the search object included in the service information is appropriately divided, and the character string obtained without the kana reading conversion and the search position specifying information for specifying the storage position of the service information are stored in association with each other. 1 storage means, second search means for storing the search position specifying information and the service information in association with each other, and corresponding to a specified character string from a predetermined information group to be searched To run a search to find service information efficiently and smoothly,
Means for receiving input of a character string consisting of a language such as hiragana, katakana, kanji, alphabet, numbers, symbols, or a combination thereof in order to search for the service information;
Means for specifying search position specifying information with reference to the first storage means based on the received character string;
Means for identifying and extracting service information with reference to the second storage means based on the specified search position specifying information;
Means for outputting the extracted service information;
A computer program that functions as a computer program. The first storage means stores a morpheme obtained by morphological analysis of the attribute information as a character string,
The computer,
Means for specifying search position specifying information with reference to the first storage means for storing, as a character string, a morpheme obtained by morphological analysis of the attribute information based on the received character string;
The computer program according to claim 5, wherein the computer program is made to function as:

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