JP2001117939A - Query output device, document retrieval system, query output method, document retrieving method and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a query output device or the like suitable for generating a query from retrieval conditions designated by a sentence. SOLUTION: A character string input accepting part 202 accepts the input of a character string, a term extracting part 203 extracts a term included in the character string and when the input of the character string is accepted, an input control part 204 applies the character string to the term extracting part 203. Then, a query generating part 205 generates the query including the extracted term and when display conditions are satisfied, a message display part 206 displays a message. When the message is displayed, a correction input accepting part 207 accepts the correction input of the character string and when the correction input is accepted, a correction control part 208 applies the relevant corrected character string to the term extracting part 203. When output conditions are satisfied, a query output part 209 outputs the relevant query.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a query output device, a query output method, and a document suitable for generating a query suitable for a search from a text, in which a document to be searched can be specified by a sentence instead of a keyword. The present invention relates to a search system, a document search method, and a computer-readable recording medium on which a program for realizing these methods is recorded.

[0002]

2. Description of the Related Art With the development of the World Wide Web (WWW) technology, a document search technology for searching for a desired document from a large number of documents has become more and more important.

Conventionally, the following method has been used in such a document search. That is, the user specifies a keyword for searching for a desired document, or inputs a query that specifies conditions for searching for a document in more detail.

[0004] Then, the document search engine obtains the number of the keyword included in the document and the degree of conformity between the document and the condition specified by the query by the vector space method.
Based on these, the score of the document is calculated.

[0005] Finally, documents with the highest scores are sequentially presented to the user as search results.

[0006] In the vector space method, a method of appropriately weighting a search keyword (hereinafter, referred to as a "term") included in a query, a method of assigning weights to documents included in a search range of a document search engine, Each term is extracted from the document (hereinafter referred to as “search term”).
Have been proposed to separately store and speed up the score calculation.

[0007]

However, in the method of inputting a keyword, when a plurality of keywords are input, it is difficult to search for a keyword including all of the keywords or a keyword including any of the keywords. The search results may be clear, and a search result that the user does not expect may be obtained.

[0008] If the specified keyword is not a prepared search term, a significant result may not be obtained as a search result.

In addition, it is difficult for a general user to compose a query for a document search engine by himself or to adjust the weight of terms included in the query.

[0010] Furthermore, when a user specifies a document to be searched in a natural sentence, a technique for automatically generating an appropriate query from the sentence is desired.

The problem to be solved by the present invention is to specify a document to be searched by using a sentence instead of a keyword, to generate a query suitable for the search from the sentence, and to search the document by the query. .

[0012]

In order to solve the above-mentioned problems, a query output device according to a first aspect of the present invention is arranged such that a score obtained by applying a query including a term to a document is within a predetermined range. Outputs a query to be given to a document search engine that obtains documents included in.

The query output device includes a character string input receiving unit, a term extracting unit, an input control unit, a query generating unit,
A message display unit, a correction input receiving unit, a correction control unit, and a query output unit are provided.

Here, the character string input receiving unit receives a character string input.

The term extracting unit performs a morphological analysis on a given character string and extracts terms included in the morphological analysis.

When the input of the character string is received by the character string input receiving section, the input control section supplies the character string to the term extracting section.

The query generation unit generates a query including the terms extracted by the term extraction unit.

When the message display condition is satisfied, the message display unit displays a message previously associated with the message display condition.

When a message is displayed on the message display unit, the correction input receiving unit receives a correction input for correcting the character string input by the character string input receiving unit.

When the correction input is received by the correction input receiving unit, the correction control unit supplies the character string corrected by the correction input to the term extraction unit.

The query output section outputs the query generated by the query generation section when the query output condition is satisfied.

In the above-described query output device, when the user specifies a document to be searched in a natural sentence, a query suitable for the search is generated from the sentence. Further, for example, when there is a possibility that a significant search result cannot be obtained, the user is notified of the possibility and a request is made to input more detailed search conditions. Therefore, the user can obtain a desired search result only by inputting a natural sentence.

[0023] The query output device can be configured to further include a term storage unit.

Here, the term storage unit stores a plurality of terms.

On the other hand, when the terms included in the query generated by the query generation section do not match any of the plurality of terms stored in the term storage section, the message display condition is satisfied.

In the above-described query output device, if a query generated from a text input by the user includes a term that is not a search term, a significant search result may not be obtained. Prompt. Therefore, the user can specify more detailed conditions before executing an inquiry to the document search engine.

Further, the query output device can be configured to further include a parameter input receiving unit.

Here, the parameter input receiving unit receives an input of a generation parameter given to the query generating unit.

On the other hand, the query generated by the query generation unit includes, in addition to the terms, the weights associated with the respective terms and referred to when obtaining the score.

Further, the query generation unit determines the weight of each of the terms extracted by the term extraction unit according to the generation parameter received by the parameter input reception unit, and associates the term with the term. And generating a query including the weight determined by the above.

In the above-described query output device, a user can input a parameter for adjusting the weight of a term included in a query. For example, when the parameter is set to “loose search” or “tight search”, the weight given to each term is changed from the information such as the dependency relation and the part of speech of the term. It is possible to generate an appropriate query according to the application.

Further, the query output device can be configured to further include a parameter input receiving unit.

Here, the parameter input receiving unit receives an input of a generation parameter given to the query generating unit.

On the other hand, the query generated by the query generator includes, in addition to the terms, essential term information indicating whether or not the documents obtained by the document search engine are limited to those containing the terms.

Further, the query generation unit determines the required term information of each of the terms extracted by the term extraction unit according to the generation parameters received by the parameter input reception unit.
A query including essential term information determined in association with this is generated.

In the above-described query output device, the user must set a parameter for adjusting whether or not the term included in the query must appear in the literature (in this case, the term is referred to as “essential term”). Can be entered. For example, depending on whether the parameter is “loose search” or “tight search”, one of the terms or the term
By making all the terms essential, it is possible to generate an appropriate query according to the user's request and purpose.

In order to solve the above-mentioned problems, a document search system according to a second aspect of the present invention comprises the above-described query output device, a document search engine unit, and a document output unit.

Here, the document search engine unit obtains documents in which the score obtained by applying the query output by the query output device to the documents falls within a predetermined range.

On the other hand, the document output unit outputs the document obtained by the document output unit and the document search engine unit.

In the document search system, a query generated by the query output device is provided to a document search engine to perform an actual search. The processing by the literature search engine may take a long time, but in the above-mentioned literature search system, before the processing by the literature search engine, a query that is expected to obtain an appropriate search result by the query output device is preliminarily obtained. After it is generated, an inquiry is made on the document search engine. For this reason, the number of inquiries required by the user for document search can be made extremely small.

In order to solve the above problem, a query output method according to a third aspect of the present invention obtains a document in which a score obtained by applying a query including a term to a document falls within a predetermined range. Output a query to be given to a document search engine, and perform a character string input receiving step, a term extraction step, an input control step, a query generation step, a message display step, a correction input reception step, a correction control step, and a query. And an output step.

Here, in the character string input receiving step, input of a character string is received.

In the term extraction step, a given character string is subjected to morphological analysis to extract terms contained therein.

In the input control step, when the input of the character string is received in the character string input receiving step, the term is extracted from the character string in the term extracting step.

In the query generation step, a query including the terms extracted in the term extraction step is generated.

In the message display step, if the message display condition is satisfied, a message previously associated with the message display condition is displayed.

In the correction input receiving step, when a message is displayed in the message display step, a correction input for correcting the character string input in the character string input receiving step is received.

In the correction control step, when a correction input is received in the correction input receiving step, the term extraction step causes the term extraction step to extract a term from the character string corrected by the correction input.

In the query output step, when the query output condition is satisfied, the query generated in the query generation step is output.

In the above-described query output method, when a term included in the query generated in the query generation step does not match any of a plurality of terms stored in advance, the message display condition is satisfied. Can be configured.

Further, the query output method can be configured to further include a parameter input receiving step.

Here, in the parameter input receiving step, an input of a generation parameter referred to in the query generating step is received.

On the other hand, the query generated in the query generating step includes, in addition to the terms, the weights associated with each of the terms and referred to when obtaining the score.

Further, in the query generation step, each weight of the terms extracted in the term extraction step is determined by the generation parameters received in the parameter input reception step, and the term and the A query including a weight determined in association with the query is generated.

The query output method can be configured to further include a parameter input receiving step.

Here, in the parameter input receiving step, an input of a generation parameter referred to in the query generating step is received.

On the other hand, the query generated in the query generating step includes, in addition to the terms, essential term information indicating whether or not the documents obtained by the document search engine are limited to those containing the terms.

Further, in the query generating step, the essential term information of each of the terms extracted in the term extracting step is determined by the generation parameter received in the parameter input receiving step.
A query including the term and essential term information determined in association with the term is generated.

In order to solve the above problems, the document search method of the present invention is configured to include a document search step and a document output step.

Here, in the document retrieval step, documents whose scores obtained by applying the query output by the above-described query output method to the documents are included in a predetermined range are acquired.

In the document output step, the document obtained in the document search step is output.

In order to solve the above-mentioned problems, a computer-readable recording medium of the present invention is a computer-readable recording medium comprising: a computer; , Correction control unit,
In addition, a program that functions as a query output unit is recorded.

Here, the character string input receiving unit receives a character string input.

The term extraction unit performs a morphological analysis on the given character string and extracts the terms contained therein.

When the input of the character string is received by the character string input receiving section, the input control section supplies the character string to the term extracting section.

The query generation unit generates a query including the terms extracted by the term extraction unit.

When the message display condition is satisfied, the message display unit displays a message associated with the message display condition in advance.

When a message is displayed on the message display unit, the correction input receiving unit receives a correction input for correcting the character string input by the character string input receiving unit.

When the correction input is received by the correction input receiving unit, the correction control unit supplies the character string corrected by the correction input to the term extraction unit.

[0070] The query output unit outputs the query generated by the query generation unit when the query output condition is satisfied.

Further, in the above-mentioned computer-readable recording medium, the program stores the computer
It can be configured to further function as a term storage unit.

Here, the term storage unit stores a plurality of terms.

On the other hand, when the terms included in the query generated by the query generation unit do not match any of the plurality of terms stored in the term storage unit, the message display condition is satisfied.

Further, in the above-mentioned computer-readable recording medium, the program stores the computer
It can be configured to further function as a parameter input receiving unit.

Here, the parameter input receiving unit receives an input of a generation parameter given to the query generating unit.

On the other hand, the query generated by the query generation unit includes, in addition to the terms, the weights associated with each of the terms and referred to when obtaining the score.

Further, the query generation unit determines the weight of each of the terms extracted by the term extraction unit based on the generation parameters received by the parameter input reception unit, and associates the term with the relevant term. And generating a query including the weight determined by the above.

Further, in the above-mentioned computer-readable recording medium, the program stores the computer
It can be configured to further function as a parameter input receiving unit.

Here, the parameter input receiving unit receives an input of a generation parameter given to the query generating unit.

On the other hand, the query generated by the query generation unit includes, in addition to the terms, essential term information indicating whether or not the documents obtained by the document search engine are limited to those containing the terms.

Further, the query generation unit determines essential term information of each of the terms extracted by the term extraction unit according to the generation parameters received by the parameter input reception unit.
A query including essential term information determined in association with this is generated.

Further, in the above-mentioned recording medium readable by a computer, the program stores the computer
It can be configured to further function as a document search engine unit and document output unit.

Here, the document search engine unit obtains documents in which the score obtained by applying the query output by the query output unit to the documents falls within a predetermined range.

On the other hand, the document output section outputs the document obtained by the document search engine.

[0085]

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

(Schematic Configuration) FIG. 1 shows a typical information processing apparatus (including a dedicated device such as a general-purpose computer, various terminals, a mobile terminal, a mobile phone, and a game device) functioning as a query output device of the present invention. It is a schematic diagram which shows a schematic structure. Hereinafter, description will be made with reference to FIG.

The information processing apparatus 101 has a CPU (Central
It is controlled by a processing unit (central processing unit) 102. When the information processing apparatus 101 is powered on,
The CPU 102 executes an IPL (Initial Program) stored in a ROM (Read Only Memory) 103.
Loader (initial program loader).

The IPL includes the hard disk 104, the FD
(Floppy Disk) drive 110
FD, CD-ROM (Compact Disk ROM)
This is a program for reading and executing an OS (Operating System) program stored in a recording medium such as a CD-ROM mounted on the drive 111.

After activating the OS, the CPU 102 stores the data in the hard disk or the like in accordance with a user's instruction input through the keyboard 105 or the mouse 106 or in accordance with the contents of a setting file previously described in the hard disk or the like. Execute the application program.

In a small-scale information processing apparatus such as a portable terminal, an embodiment in which the IPL itself functions as an OS or an application program can be adopted.

The CPU 102 uses a RAM (Random Access Memory) 107 as a temporary work storage area when executing the program. In addition, a register or a cache (not shown) provided in the CPU 102 is used as a temporary work storage area.

As the program is executed, the CPU 102 is used to report the result to the user or to show the progress.
Can display the information on a display device 108 such as a liquid crystal display or a CRT (Cathode Ray Tube). In the instruction operation using the mouse 106, the cursor displayed on the screen is moved by moving the mouse 106, and the menu item indicated by the cursor can be selected by clicking the mouse 106.

The information processing apparatus 101 is an NIC (Network
Interface 10 such as Interface Card) and modem
9 can communicate with a computer communication network such as the Internet. A query can be transmitted to another server computer (document search engine) via the interface 109, and a search result transmitted as a response can be received. In addition, a program received via the interface 109 can be executed.

FIG. 2 is a schematic diagram showing a schematic configuration of each function when the information processing device 101 functions as a query output device of the present invention.

The query output device 201 includes a character string input accepting unit 202, a term extracting unit 203, and an input control unit 204
, A query generation unit 205, and a message display unit 206
And a correction input receiving unit 207, a correction control unit 208, and a query output unit 209.

Further, it can be configured to include a term storage section 210 and a parameter input reception section 211. Hereinafter, description will be made based on a configuration including these.

The character string input receiving section 202 receives a character string representing a natural sentence for search from the user. Therefore, input devices such as the keyboard 105 and the mouse 106 function as the character string input receiving unit 202.

[0098] Term extraction unit 203 performs a morphological analysis on the given character string, and extracts the terms included in the character string. Therefore, the CPU 102 functions as the term extraction unit 203.

The input control unit 204 is a character string input receiving unit 2
When the input of the character string is accepted by 02, the character string is given to the term extraction unit 203. Therefore, CP
The U 102 functions as a term extraction unit 203 in cooperation with input devices such as a keyboard 105 and a mouse 106.

[0100] The query generation unit 205
3. Generate a query including the terms extracted by 3. Therefore, the CPU 102 functions as the query generation unit 205.

When the message display condition is satisfied, the message display unit 206 displays a message associated with the message display condition in advance. Therefore, the display device 108 functions as the message display unit 206 in cooperation with the CPU 102.

When a message is displayed on message display unit 206, correction input receiving unit 207 receives a correction input for correcting the character string input by character string input receiving unit 202. Therefore, input devices such as the keyboard 105 and the mouse 106 function as the correction input receiving unit 207.

The correction control unit 208 includes a correction input receiving unit 20
When the correction input is received by the user 7, the character string corrected by the correction input is provided to the term extraction unit 203. Therefore, the CPU 102 functions as the correction control unit 208.

If there is a correction input, the term extraction unit 2
03 is driven again. In the present embodiment, since the message displayed by the message display unit 206 indicates that “a significant search result may not be obtained”, the query output condition is satisfied when the message is not displayed.

When the query output condition is satisfied, the query output unit 209 outputs the query generated by the query generation unit 205 and transmits the query to the document search server. Therefore, the interface 109 functions as the query output unit 209.

The term storage section 210 stores a plurality of terms. Therefore, the ROM 103, the hard disk 1
04, the FD mounted on the FDD 110, the CD-ROM mounted on the CD-ROM drive 111, and another computer connected via the interface 109 function as the term storage unit 210.

In this embodiment, the terms included in the query generated by the query generation unit 205 are stored in the term storage unit 2
If the search term does not match any of the terms stored in 10, there is a possibility that a significant search result cannot be obtained.
The message display condition is satisfied.

The parameter input receiving section 211 receives an input of a generation parameter given to the query generating section 205. Therefore, input devices such as the keyboard 105 and the mouse 106 function as the parameter input receiving unit 211.

In the present embodiment, the query generated by the query generation unit 205 includes, in addition to the terms, the weights associated with the respective terms and referred to when obtaining the score.

The query generation unit 205 determines the weight of each of the terms extracted by the term extraction unit 203 based on the generation parameters whose input has been received by the parameter input reception unit 211, and associates the term with the term. And generating a query including the weight determined by the above.
The method of determining the weight will be described later.

Further, the query generated by the query generation unit 205 includes, in addition to the terms, essential term information indicating whether the documents obtained by the document search engine are limited to those containing the terms.

[0112] The query generation unit 205
The required term information of each of the terms extracted in Step 3 is determined based on the generation parameters received by the parameter input receiving unit 211, and includes the term and the required term information determined in association with the term. Generate a query. Generation of the required term information will be described later.

In addition, the document search engine unit (not shown) and the document output unit (not shown) can be configured on the same information processing device 101 as the query output device 201. However, from the viewpoint of load distribution and centralized management of the document database, it is desirable that these are separated.

In addition, the hard disk 104, the FD mounted on the FD drive 110, the CD-ROM mounted on the CD-ROM drive 111, the ROM 103, the RA
M107 and those corresponding to these readable information storage devices of another computer connected via the interface 109 function as a recording medium of the present invention by recording a program executed by the CPU 102.

As described above, the information processing apparatus 1 shown in FIG.
01 functions as the query output device 201 of the present invention shown in FIG. This is a typical embodiment of the query output device 201 of the present invention.

On the other hand, in a portable terminal or the like, a nonvolatile semiconductor memory (flash memory card) is used as an external storage device.
Alternatively, a battery-backed RAM can be used. In this case, the hard disk 104,
The FD drive 110 and the CD-ROM drive 111 are not required.

(Processing Flow) FIG. 3 is a flowchart showing a processing procedure when the information processing apparatus 101 shown in FIG. 1 functions as the query output apparatus 201 of the present invention.

First, the CPU 102 receives an input of a sentence indicating a search condition for specifying a search target document from the user (step S301). For example, the user can input a natural sentence such as “Joint venture between Japan and China” as a search condition.

Next, the CPU 102 performs a morphological analysis on the input character string and extracts terms contained therein (step S302). In the case of the above input example, the term is subjected to morphological analysis such as "Japan /// China // JV / company". Here, / indicates a morpheme break. From here, the terms "Japan" and "China"
Extract "JV / Company".

If the terms include other terms, they are also extracted (step S303). Terms included in other terms are called “subterms”. For example, the sub-terms of “JV / company” are “JV” and “company”.

Further, related terms such as synonyms and synonyms of these terms and sub-terms (hereinafter referred to as “related terms”)
That. ) Is extracted (step S304).

It is desirable that information on a certain term and its related terms be stored in advance on the hard disk 104 or the like. For example, as terms related to "Japan", "Japan", "Japan", "Japan", "Japan"
n, etc., "East Asia", "Hokkaido", "Kyushu", "Shikoku", etc. are extracted.

On the other hand, the CPU 102 acquires a search parameter separately input by the user (step S30).
5). This search parameter is set, for example, in step S3
An embodiment can be adopted in which the data is input simultaneously at 01. FIG. 4 is a display example of a search condition input form in which a user inputs a search condition character string and a search parameter.

[0124] The text field 402 of the search condition input form 401 receives an input of a search condition character string. The slider 403 receives an input of a search parameter. The user operates the mouse 106 and the keyboard 105 to input respective information into these forms.

In the present embodiment, when the user clicks the query output button 404, the processing after step S301 is started.

Next, the CPU 102 checks whether or not the extracted terms include non-predetermined terms (step S306). The “predetermined terms” are the hard disk 104 and CD-RO
M and the like. These are search keywords that can be used in the document search engine to which the query output device 201 is connected. If there is a term that is not a search keyword (step S306; Yes), a message indicating that "significant search results may not be obtained" is displayed (step S307), and the user is prompted to re-enter search conditions.

In the present embodiment, the message display condition is satisfied when “there is a term that is not a search keyword”, but the message display condition can be changed as appropriate.

FIG. 5 is a display example showing how this message is displayed. The message display form 501 includes a message display area 5 where the message is displayed.
02, a re-entry button 503 to be clicked when re-entering, and a forcible button 50 to be clicked when forcing, ie, performing a search with the search conditions as they are.
4 is displayed.

The CPU 102 determines whether or not the user inputs again (step S308). When the user inputs again (step S308; Yes), the process returns to step S301.

On the other hand, if all of the terms are search keywords (step S306; No), and if the user selects forced execution (step S308; No), the CP
U102 generates a query from the term, part-of-speech information or dependency information of the term obtained by the morphological analysis, and the search parameter (step S309).

[0131] The query generated here includes the following information. ·term. Includes subterms and related terms. -The weight of the term. Used when calculating the score of a document by the vector space method. -Required term information. Indicates whether the term is a mandatory term.

The method of determining the term weight and essential term information will be described later.

Finally, CPU 102 outputs the generated query (step S310). As an output destination,
For example, the RAM 107 can be employed. The output query is used for an inquiry to a literature search engine, as described later.

FIG. 6 is a flowchart showing the flow of a process for making an inquiry to the document search engine using the output query.

At step S310, CPU 102 transmits the query output to RAM 107 to document search engine server via interface 109 (step S601).

The document search engine server receives the query (step S602), and based on the query,
The score of each document is calculated (step S603), and a predetermined number of upper documents are acquired (step S604), and these are transmitted as search results (step S605).

The CPU 102 has an interface 109
Are received via the search result (step S60).
6) The document is displayed on the display device 108 (step S607), and the process ends.

As described above, the user can specify a search condition by inputting a natural sentence, but if there is a possibility that a significant search result cannot be obtained, a message to that effect is displayed. By prompting the user for re-input, desired search results can be easily obtained, and the number of inquiries to the document search engine can be reduced.

(Determination of Weight) In the query generation unit 205 and in step S309, a query is generated from the term, the part of speech information or dependency information of the term obtained by the morphological analysis, and the search parameter. I do.
Hereinafter, an example of a method of determining the term weight in this query will be described.

In Japanese, dependency between nouns and compound nouns are frequently used, and these must be taken into account in document search. Therefore, these are categorized as follows from the tendency of the search result, and the weight of each term is determined.

The first type is a concatenation of a general noun and a general noun (including a case in which a particle "no" is interposed. The same applies hereinafter).
This is the case. In this case, the general noun placed before is often the subject. For example, "meal / therapy"
In the case of “meal / no / therapy”, “golf / tournament”, and “golf / no / tournament”, the subjects are “meal” and “golf”, respectively. Therefore, the weight of the terms arranged before the subject is increased.

A second type is a case of a term including a subterm. If the meaning is significantly different between the sub-term and the term, the weight of the sub-term is reduced and the weight of the entire term is increased. For example, "Region / bank"
In the “Agreement”, the overall weight is increased, and in the “Region”, “Bank”, “Employment” and “Agreement”, the weight is reduced.

In the present embodiment, these weight determination methods are employed, but other heuristics for determining other weights can be employed in accordance with the results of research in natural language. Similar processing can be performed for other languages.

(Determination of Required Term Information) Query Generation Unit 2
In step 05 and step S309, a query is generated from the term, part-of-speech information or dependency information of the term obtained by morphological analysis, and a search parameter. Hereinafter, an example of a technique for determining the required term information in this query will be described.

Whether or not an essential term is related to whether or not the term is a subject. Therefore, in the above-described type of weight determination, a term “increase the weight” can be set as an essential term.

In the second type, a query may be created without using the sub-terms “region”, “bank”, “employment”, and “agreement”.

(Adjustment by Search Parameter) In this embodiment, term weights and essential term information are determined according to search parameters input by the user. In the search condition input form 401 shown in FIG. 4, the slider 403 allows the user to input search parameters from "tight search" to "loose search" as values in several stages.

In the case of “tight search”, the difference between the weights is increased, or the ratio of essential terms is increased. on the other hand,
In the case of "loose search", reduce the difference between the weights,
Alternatively, reduce the ratio of required terms.

For example, “loose search” for “cheap / travel” (when a term arranged later is the subject)
The information contained in the query, in order from to "tight search", is listed as follows.

“Cheap” is small, “Travel” is small

“Cheap” is small weight, “Travel” is large weight

"Cheap" is small, "Travel" is large and essential

“Cheap” has a large weight, “Travel” has a large weight and is essential

“Cheap” is heavy and essential, “Travel” is heavy and essential

The relationship between these search parameters and the generated query can be changed as appropriate, and the changed embodiment is also included in the scope of the present invention.

[0156]

According to the present invention, a document to be searched can be specified by a sentence instead of a keyword, and a query output device, a query output method, and a document search system suitable for generating a query suitable for a search from the sentence. , A document search method, and a computer-readable recording medium in which a program for realizing the method is recorded.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a schematic configuration of a typical information processing device functioning as a query output device of the present invention.

FIG. 2 is a schematic diagram showing a schematic configuration of each function of a query output device of the present invention.

FIG. 3 is a flowchart illustrating a procedure of processing of the query output device of the present invention.

FIG. 4 is an explanatory diagram showing a display example of a search condition input form.

FIG. 5 is an explanatory diagram showing a display example of a message display form.

FIG. 6 is a flowchart illustrating a procedure of a document search process using a query output by the query output device of the present invention.

[Explanation of symbols]

 Reference Signs List 101 information processing device 102 CPU 103 ROM 104 hard disk 105 keyboard 106 mouse 107 RAM 108 display device 109 interface 110 FD drive 111 CD-ROM drive 201 query output device 202 character string input reception unit 203 term extraction unit 204 input control unit 205 query generation Unit 206 message display unit 207 correction input reception unit 208 correction control unit 209 query output unit 210 term storage unit 211 parameter input reception unit 401 search condition input form 402 text field 403 slider 404 query output button 501 message display form 502 message display area 503 Re-enter button 504 Force button

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5B075 ND03 NK32 NK35 PP02 PP03 PP12 PP13 PP25 5E501 AA01 AA04 AA13 AB03 AC33 BA05 CA03 CA04 CB02 CB09 EA05 EA10 FA09

Claims (15)

[Claims] 1. A query output device for outputting a query to be given to a document search engine that obtains a document whose score obtained by applying a query including a term to the document is within a predetermined range, comprising: A character string input receiving unit that receives an input of a character string; a term extracting unit that performs a morphological analysis of a given character string and extracts terms included in the character string; and a case where a character string is received by the character string input receiving unit. An input control unit for providing the character string to the term extraction unit; a query generation unit for generating a query including the term extracted by the term extraction unit; and when the message display condition is satisfied, the message display condition A message display unit for displaying the associated message; and when the message display unit displays the message, the character string input A correction input receiving unit that receives a correction input for correcting a character string input by the receiving unit; and, when the correction input is received by the correction input receiving unit, a character string corrected by the correction input; And a query output unit that outputs a query generated by the query generation unit when a query output condition is satisfied. 2. A term storage unit for storing a plurality of terms, wherein a term included in a query generated by the query generation unit does not match any of the plurality of terms stored in the term storage unit. The query output device according to claim 1, wherein a message display condition is satisfied. A parameter input receiving unit for receiving an input of a generation parameter given to the query generating unit, wherein the query generated by the query generating unit is associated with each of the terms in addition to the term; The query generation unit includes a weight referred to when obtaining a score, the query generation unit determines each weight of the terms extracted by the term extraction unit according to the generation parameters received by the parameter input reception unit, and 2. A query including a term and a weight determined in association with the term.
2. The query output device according to 1. 4. The apparatus according to claim 1, further comprising a parameter input receiving unit for receiving an input of a generation parameter to be given to the query generating unit, wherein the query generated by the query generating unit is not only a term but also a document obtained by the document search engine. The query generation unit includes essential term information indicating whether or not to include only the term, and the query generation unit receives an input of each of the required term information of the terms extracted by the term extraction unit by the parameter input reception unit. The query output device according to claim 1, wherein the query output device generates a query that is determined by the generated generation parameter and includes the term and essential term information determined in association with the term. 5. A query output device according to claim 1, further comprising: obtaining a document in which a score obtained by applying a query output by the query output device to the document is within a predetermined range. A document search system, comprising: a document search engine unit; and a document output unit that outputs a document obtained by the document search engine unit. 6. A query output method for outputting a query to be given to a document search engine for obtaining documents whose scores obtained by applying a query including a term to documents to a document within a predetermined range, comprising: A character string input receiving step of receiving an input of a character string; a morphological analysis of a given character string, and a term extracting step of extracting a term included in the character string; and a character string input is received in the character string input receiving step. In the case, an input control step of causing the term extraction step to extract a term from the character string; a query generation step of generating a query including the term extracted in the term extraction step; A message display step of displaying a message associated in advance with a message display condition; When a message is displayed in the message display step, a correction input receiving step of receiving a correction input for correcting the character string input in the character string input receiving step, and a correction input being received in the correction input receiving step A query control step for causing the term extraction step to extract a term from the character string corrected by the correction input; and a query for outputting the query generated in the query generation step when a query output condition is satisfied. A query output method, comprising: an output step. 7. The message display condition is satisfied when a term included in a query generated in the query generation step does not match any of a plurality of terms stored in advance. Query output method described in. 8. The apparatus further comprises a parameter input receiving step of receiving an input of a generation parameter referred to in the query generating step, wherein the query generated in the query generating step corresponds to each of the terms in addition to the term. The query generation step includes generating weights of the terms extracted in the term extraction step, the weights of the terms being extracted in the parameter input reception step. The query output method according to claim 6, wherein the query is determined by a parameter, and a query including the term and a weight determined in association with the term is generated. 9. The system further comprises a parameter input receiving step of receiving an input of a generation parameter referred to in the query generating step, wherein the query generated in the query generating step is obtained by the document search engine in addition to the term. The relevant document contains essential term information indicating whether or not the term is limited to the term containing the term. The query generation step includes: entering the respective essential term information of the terms extracted in the term extracting step into the parameter input receiving step. 7. The query output method according to claim 6, wherein the query is determined by the generation parameter received as input, and the query including the term and the required term information determined in association with the term is generated. . 10. A document search step of acquiring a document in which a score obtained by applying a query output by the query output method according to claim 6 to a document is within a predetermined range, A document output step of outputting a document obtained in the document search step. 11. A character string input receiving unit for receiving a character string input, a term extracting unit for morphologically analyzing a given character string and extracting terms contained therein, and a character string input receiving unit An input control unit that supplies the character string to the term extraction unit when a column input is received; a query generation unit that generates a query including the term extracted by the term extraction unit; A message display unit for displaying a message associated with the message display condition in advance; a correction for correcting a character string input by the character string input reception unit when a message is displayed by the message display unit; An input receiving unit, when a correction input is received by the correction input receiving unit, A modification control unit that gives the modified character string to the term extraction unit, and a program that functions as a query output unit that outputs a query generated by the query generation unit when a query output condition is satisfied. A computer-readable recording medium characterized by the above-mentioned. 12. The program further causes the computer to function as a term storage unit for storing a plurality of terms, wherein a plurality of terms included in a query generated by the query generation unit are stored in the term storage unit. 12. The computer-readable recording medium according to claim 11, wherein the message display condition is satisfied when any of the terms does not match. 13. The program further causes the computer to function as a parameter input receiving unit that receives an input of a generation parameter to be provided to the query generating unit. The query generated by the query generating unit includes, in addition to the terms, The query generation unit receives the weights of the terms extracted by the term extraction unit by the parameter input reception unit, the weights being associated with each of the terms and being referred to when obtaining the score. 2. A query that is determined by the generated generation parameter and includes the term and a weight determined in association with the term.
2. The computer-readable recording medium according to claim 1. 14. The program further causes the computer to function as a parameter input receiving unit that receives an input of a generation parameter to be given to the query generating unit. The query generated by the query generating unit includes, in addition to terms, The document acquired by the search engine includes essential term information indicating whether or not the term is limited to the term containing the term. The query generation unit sets the essential term information of each of the terms extracted by the term extraction unit to the parameter. 12. The computer according to claim 11, wherein the query is determined based on the generation parameter received by the input receiving unit, and the query including the term and essential term information determined in association with the term. A readable recording medium. 15. The program according to claim 1, wherein the computer obtains a document in which a score obtained by applying the query output from the query output unit to the document falls within a predetermined range. The computer-readable recording medium according to any one of claims 11 to 14, further comprising a document output unit that outputs a document obtained by the document search engine unit.