JPH1139338A - Document retrieval device and method therefor and medium recording program for document retrieval - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently retrieve a document by not permitting the user of a retrieving side to manage a keyword but permitting the document of a retrieved side to manage the keyword. SOLUTION: The retrieval keyword constituted of an arbitrary character string is inputted and the document is retrieved based on the inputted retrieval keyword (S1-S3). The retrieval keyword used at the time of retrieving the documents is registered in whole documents or the arbitrary document in a retrieval result obtained by document retrieval as a history keyword (S4 and S5). When the document referring to retrieval history is selected in the retrieval result, the document is retrieved by referring to the history keyword which the selected document has (S6-S11).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a document search apparatus realized by a personal computer, and more particularly to a document search apparatus having a search history keyword storage function, a document search method, and a medium in which a program for document search is recorded. About.

[0002]

2. Description of the Related Art Conventionally, as a document search device realized by a personal computer, a document search device of a full-text search system for performing a document search using an arbitrary keyword in a search target document is known.

In such a document search apparatus, a user uses a word or a character which would be included in a document to be searched as a search key, and searches for a document in which this search key is included at least one place. Received as a result. However, as information becomes huge, there is a limit to the amount of information that a user can obtain on his own. Even if it is a full text search method, it is very difficult to search for desired information (such as a document) unless a necessary keyword is described in the end. In addition, as a method of managing a search expression (keyword), there is a method of managing as information common to the system or a method of managing as a personal property.

[0004]

In a full-text search type document search apparatus, a search can be performed no matter where in a document a word to be searched is found. In addition, since the user can use an idea word as a search keyword, he does not feel cramped in the search.

However, such a document search device generally handles a huge number of documents. For this reason, in order for the user to obtain the really necessary information (document), it is necessary to sift and narrow down the document information with an appropriate search keyword, but this requires considerable effort and time. It is becoming.

[0006] In some cases, a search formula (keyword) is managed as a property common to individual users or as a property common to the system, and is called up and used at the time of search. However, search formulas created at the individual level have limited search scope and validity. On the other hand, in the case of system sharing, even if a search formula created by another user can be used, there is a problem that search efficiency is poor because the purpose of the search and the amount of search results cannot be recognized in advance.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and does not allow a searching user to manage a keyword, but allows a document to be searched to manage a keyword so that an efficient search can be performed. An object of the present invention is to provide a document search device, a document search method, and a medium in which a program for document search is recorded.

[0008]

According to the present invention, there is provided a document search apparatus comprising: an input means for inputting a search keyword composed of an arbitrary character string; and a first means for performing a document search based on the search keyword input by the input means. Document search means,
Search history registration means for registering, as a search history keyword, a search keyword used at the time of searching each document in all documents or an arbitrary document in the search results obtained by the first document search means; Selecting means for selecting a document that refers to a search history from the results; second document searching means for performing a document search by referring to the search history keyword of the document selected by the selecting means;
Display means for displaying a search result obtained by the first or second document search means.

According to such a configuration, the search keyword used in the search is registered in the corresponding document as a search history keyword, and a document search can be performed with reference to the search history keyword. As a result, by using the search keyword used by another user (including himself / herself), it becomes possible to search for a document that has been omitted from the search by itself. In addition, because a document has a search keyword, the purpose of the search keyword is clear from the content of the document,
The user can perform a search suitable for the purpose.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a document search device according to one embodiment of the present invention. The present apparatus is realized by a computer which reads a program recorded on a recording medium such as a magnetic disk and the operation of which is controlled by the program.

As shown in FIG. 1, the present apparatus includes an input device 1 for a user to input a search keyword and perform a search operation, a control device 2 composed of a CPU and a memory, document data to be searched, It comprises an external storage device 3 for storing the history and a display device 4 for displaying search results and the like.

As the input device 1, for example, a keyboard,
A mouse or the like is used. As the external storage device 3, for example, a hard disk device or the like is used. As the display device 4, for example, a CRT (Cathode Ray Tube) or an LCD (Li
quid Crystal Display) is used.

Here, the control device 2 includes a control unit 200, a document search processing unit 210, a keyword control unit 220, and a buffer unit 230. The control unit 200
It controls the overall operation of the present apparatus, and performs, for example, operation control of each processing unit and data transfer between them.

FIG. 2 shows a detailed configuration of the control device 2. (A) Control Unit 200 The control unit 200 includes a system initialization unit 211, a search keyword input unit 212, a search unit 213, and a display unit 214.

The system initialization section 211 initializes a system necessary for performing a document search. The search keyword input unit 212 stores a character string serving as a search keyword in the search keyword storage buffer 231.

The search unit 213 searches for a relevant document from the search target documents stored in the document storage area 320 of the external storage device 3 according to the search keywords stored in the search keyword storage buffer 231 and stores the title. The corresponding document-specific number and title are stored in the search document information storage buffer 232 from the area 310, and the document itself corresponding to the specified document number is extracted from the document storage area 320 and stored in the search document storage buffer 233. .

Display section 214 is a screen for inputting a search keyword (search keyword input screen 11 in FIG. 14).
And search results (search result list display screen 21 in FIG. 15, FIG. 1)
6 is displayed on the display device 4.

(B) Keyword Control Unit 220 The keyword control unit 220 controls the keyword information of each of the documents searched by the search unit 213, and includes a title selection unit 221, a registration unit 222, a reference unit 223, Difference information section 224, search history selection section 22
5. It is configured to include the search history configuration unit 226.

The title selection unit 221 is a list of search results to be registered in the search history selected by the user (see FIG. 15).
The title number of the above document is stored in the selected title number storage buffer 234. The registration unit 222 refers to the title number stored in the selected title number storage buffer 234, and stores the title number stored in the search keyword storage buffer 231 in the search history storage area 330 on the external storage device 3 corresponding to the title number. Register search keywords.

The reference section 223 refers to the title number stored in the selected title number storage buffer 234,
The search history of the search history storage area 330 on the external storage device 3 corresponding to the title number is stored in the search history keyword storage buffer 235. The difference information unit 224 compares the search history keywords stored in the search history keyword storage buffer 235 one by one with the search keywords stored in the search keyword storage buffer 231, and is not described in the search keywords, and The keyword described in the search history keyword is stored in the difference information storage buffer 237.

(C) Buffer Unit 230 The buffer unit 230 is for storing various information necessary for the search processing of the apparatus, and includes a search keyword storage buffer 231, a search document information storage buffer 232, and a search document storage buffer. 233, a selected title number storage buffer 234, a search history keyword storage buffer 235, a search history hit count storage buffer 236, a difference information storage buffer 237, a selected search history number storage buffer 238, and a search mode storage buffer 239. .

The search keyword storage buffer 231 stores a character string serving as a search keyword, as shown in FIG. The search document information storage buffer 232 stores the number and title of the search document as shown in FIG. The search document storage buffer 233 stores the contents of the search document as shown in FIG.

The selected title number storage buffer 234 stores
As shown in FIG. 10, the title number of the document selected as the search history registration target is stored. The search history keyword storage buffer 235 stores a keyword registered as a search history as shown in FIG.

The search history applicable number storage buffer 236 includes:
As shown in FIG. 12, the number of documents having the search history keyword is stored. As shown in FIG. 13, the difference information storage buffer 237 is not described in the search keyword,
In addition, a keyword described in the search history keyword is stored as difference information.

The selection search history number storage buffer 238 stores
The number corresponding to the search history keyword selected by the user is stored. The search mode storage buffer 239 stores a search mode (logical product or logical sum) set when a plurality of search history keywords are selected.

Further, as shown in FIG.
Includes a title storage area 310, a document storage area 320,
A search history storage area 330 is provided. The title storage area 310 stores the titles of all registered documents and their unique numbers. Document storage area 3
20 stores all registered document data and a unique number of the document. The search history storage area 330 stores a document-specific number corresponding to the search history of a registered document.

Next, the operation of the embodiment will be described. First, the overall processing operation of the present apparatus will be described. FIG. 3 is a flowchart showing the operation of the search processing in the embodiment. First, when the system is started, the system initialization unit 211 performs various initialization processes necessary for the search, such as clearing various buffers provided in the buffer unit 230 (step S1).

At this time, a search keyword input screen 11 for document search as shown in FIG. 14 is displayed on the display device 4 via the display unit 214. The search keyword input screen 11 has an input line 12 for a user to input a search keyword. In the input screen 11, a "confirm" button 13 for instructing completion of the search keyword input, a "cancel" button 14 for canceling the entered search keyword, and a "search" button 15 for instructing the search are provided. An "end" button 16 for instructing the end of the operation here is provided.

When the search keyword input screen 11 is displayed, a search keyword can be input. In this state, the user uses the input device 1 to input a search keyword (plurality) composed of an arbitrary character string (step S2).

In the example of FIG. 14, a search keyword such as "PC or home computer" is input. By pressing the "OK" button 13 with a mouse or the like, the input of the search keyword is completed. At this time, the input search keyword is displayed as shown in FIG. 14 and stored in the search keyword storage buffer 231. FIG. 7 shows the contents of the search keyword storage buffer 231 at this time.

When the processing in step S2 ends, the search unit 213 is started. The search unit 213 searches for a relevant document from the search target documents stored in the document storage area 320 of the external storage device 3 according to the search keywords stored in the search keyword storage buffer 231 (step S3). The document number and title thus obtained are stored in the search document information storage buffer 232.
FIG. 8 shows the contents of the search document information storage buffer 232 at this time.

When the processing in step S3 is completed, the display unit 214 is activated. The display unit 214 outputs a search result list display screen 21 as shown in FIG. 15 to the display device 5 based on the search result obtained by the search unit 213 (step S4). This search result list display screen 21
It has a title display section 22 for displaying the title of the document obtained as a search result. In addition, the display screen 21
"Registration" to instruct search keyword registration
A button 23, an "execute" button 24 for instructing display of a document corresponding to the title selected in the title display section 22, and an "end" for instructing termination of the work here.
Button 25 is provided.

Here, the search keyword used this time can be registered in a document (part or all) obtained as a search result. The registration of the search keyword is performed by selecting a desired title in the title display section 22 and then pressing a “register” button 23 with a mouse or the like.

At the initial stage when the search result list display screen 21 is displayed, a mark (for example, a check mark) indicating the selected state is displayed on the titles of all the documents in the title display section 22.

When the user selects a desired document title and presses the registration button 23 with a mouse or the like, the keyword control unit 220 is activated. Keyword control unit 2
20 stores the title number corresponding to the title selected by the user through the title selection unit 221 in the selected title number storage buffer 234. FIG. 10 shows the contents of the selected title number storage buffer 234 at this time.

The registration unit 222 refers to the title number stored in the selected title number storage buffer 234 and stores the search keyword storage buffer 330 in the search history storage area 330 on the external storage device 3 corresponding to the title number. The search keyword stored in 231 is registered (step S5). The search history registration processing in step S5 will be described later with reference to FIG.

When the processing in step S5 is completed, a desired title is selected through the search result list display screen 21, and an "execute" button 24 is pressed with a mouse or the like, so that the display unit 214 is displayed as shown in FIG. The registered document display screen 31 is output to the display device 4 (step S6).
The registered document display screen 31 is provided with a “search history” button 32 for instructing a search using the search history, and an “end” button 25 for instructing the end of the work here.

In the example shown in FIG. 16, the contents of a document having a title such as "Recommend Home Computing" are displayed. Search document storage buffer 2 at this time
The contents of 33 are shown in FIG.

Here, if the search is to be continued (Yes in step S7), a new search keyword is input (step S11) or the registered document display screen 31
Is pressed with a mouse or the like, and control is returned to step S3 using the search history keyword registered in the document to perform a document search.

When the latter search history is used (Yes in step S8), when the “search history” button 32 is pressed, the keyword control unit 200 stores the search history keyword of the document in the search history keyword storage buffer 235 through the reference unit 223. And the difference information of the search history keyword is stored in the difference information storage buffer 237 through the difference information unit 224.

At this time, the display unit 214 refers to the search history keywords stored in the search history keyword storage buffer 235 and the difference information stored in the difference information storage buffer 237, and performs a search as shown in FIG. The history reference screen 41 is output to the display device 4 (Step S9).
The search history reference processing in step S9 will be described later with reference to FIG.

The search history reference screen 41 displays the search history keywords added to the document and the number of hits. In this case, keywords (difference information) other than the currently input search keyword are underlined. Also,
The search history reference screen 41 includes selectors 42a and 4 for selecting logical product or logical sum as a search mode.
2b, a "search" button 43 for instructing a search and an "end" button 44 for instructing the end of the work here are provided.

From the list of search histories on the search history reference screen 41, one or a plurality of search history keywords are selected in units of lines with a mouse or the like, and a "search" button 43 is pressed to perform a search again. Can be. At this time, when a plurality of search history keywords are selected, how the keywords are combined is selected by the selector 42a.
And 42b (step S10).
The search history reference processing in step S10 will be described later with reference to FIG.

Next, the search history registration process will be described. FIG. 4 is a flowchart showing the search history registration processing in step S5. In the search result list display screen 21 shown in FIG. 15, when a “registration” button 23 is pressed after selecting a title to be searched, a title selection unit 221 is activated.

The title selection section 221 stores the title number of the document on the search result list display screen 21 selected by the user as a search history target in the selected title number storage buffer 23.
4 (step S51). In the example of FIG. 15, the titles of all displayed documents are selected as search history targets ("D" is added). Assuming that the title numbers of the documents are "1,""2,""6," and "7," the contents of the selected title number storage buffer 234 are as shown in FIG.

Subsequently, the registration unit 222 is activated, and refers to the title number stored in the selected title number storage buffer 234 (steps S52, S53), and searches the external storage device 3 for the title number. The search keyword stored in the search keyword storage buffer 231 is registered in the storage area 330 (step S54).
Hereinafter, similarly, the selected title number storage buffer 23
The above process is repeated for all title numbers stored in No. 4 (step S55).

As described above, the search keyword is registered on the basis of the title number with respect to the document selected as the search history object among the documents obtained by inputting the search keyword.

Next, search history reference processing will be described. FIG.
Is a flowchart showing the search history reference process in step S9. On the registered document display screen 31 shown in FIG. 16, the contents of a desired document among the documents obtained by inputting the search keyword are displayed.

When the "search history" button 32 provided on the registered document display screen 31 is pressed by a mouse or the like, the title selection section 221 is activated, and the title number of the document currently displayed on the registered document display screen 31 Is stored in the selected title number storage buffer 234 (step S9).
1).

Next, the reference unit 223 searches the search history storage area 33 on the external storage device 3 based on the title number of the document stored in the selected title number storage buffer 234.
A search history keyword registered in the document is read from 0 (step S92).

Next, the reference section 223 stores the search history keywords read from the search history storage area 330 on the external storage device 3 in the search history keyword buffer 235 and searches the number of documents having the search history keywords. The data is stored in the history record number storage buffer 236 (step S93).

More specifically, for example, if search keywords such as “home or hobby or personal computer”, “mobile computer and network”, and “home security” are registered in the document as past history, These search history keywords including “PC or home computer” are shown in FIG.
Is stored in the search history keyword buffer 235 as shown in FIG.

As the number of documents to which these search history keywords correspond, for example, “32” for “home or hobby or personal computer”, “120” for “mobile computer and network”, and “9” for “home security” , "PC or home computer" is "5
8 ”, the search history hit count storage buffer 2
The contents of 36 are as shown in FIG.

Next, the difference information section 224 compares the search history keywords stored in the search history keyword storage buffer 235 with the search keywords stored in the search keyword storage buffer 231 and describes the search keywords. And the keyword described in the search history keyword is stored in the difference information storage buffer 237 as difference information (step S94).

Thus, in the above example, as shown in FIG. 11, search history keywords such as “home or hobby or personal computer”, “mobile computer and network”, “home security”, and “personal computer or home computer” are used. Since it was obtained, the search keyword used this time "PC or home computer"
13, as shown in FIG.
"Mobile computer, network" and "Home security" are difference information storage buffers 2 as difference information.
37.

Thereafter, similarly, the above processing is repeated for each designated document (step S95). Thereafter, the display unit 214 creates the search history reference screen 41 as shown in FIG. 17 based on the search history keywords stored in the search history keyword buffer 235 and the difference information stored in the difference information storage buffer 237. Then, this is output to the display device 4 (step S96).

In this case, keywords (difference information) not described in the search keywords and described in the search history keywords are underlined to distinguish them from other keywords (the same keywords as the search keywords used this time). Is done. In the example of FIG. 17, “home”, “hobby”, “mobile computer”, “network”, and “home security” are underlined.

Next, the search history assembling process will be described. FIG.
Is a flowchart showing the search history assembling process in step S10. In the search history reference screen 41 shown in FIG. 17, when the “search” button 43 is pressed with a mouse or the like, the search history selection unit 225 is activated.

The search history selection section 225 selects a number (serial number in the search history keyword list on the search history reference screen 41) corresponding to the search history keyword selected on the search history reference screen 41 by the user. 238 (step S101).

Next, the search history construction unit 226 is activated,
The selected search history number stored in the selected search history number storage buffer 238 is referred to, and the corresponding search history keyword is stored in the search keyword storage buffer 231 (steps S102 and S103).

If a plurality of search history keywords have been selected (Yes at step S104), the search history forming unit 226 searches the search mode storage buffer 239.
A search formula for each search history keyword is created based on the search mode (either logical product or logical sum) stored in the search keyword and stored in the search keyword storage buffer 231 (step S105).

In the same manner, the above processing is repeated for all the selected search history numbers stored in the selected search history number storage buffer 238. This allows
The search keyword storage buffer 231 stores a new search keyword using the search history keyword registered in the specified document, and the search is executed again based on the search keyword.

As described above, by using the search history keywords of the document obtained as a search result, it becomes possible to find a document that could not be searched by the first search keyword. This is because such search history keywords often include keywords that the user cannot think of, and if the document that the user has searched for by himself is a document that meets the search purpose, This is because the search keyword of the document further has a keyword for searching for a document related to the document.

In many cases, a search is repeated while forming a search keyword until a target document is obtained in the search process. When a search keyword is registered in a document, the search keyword is not a simple search keyword, but becomes a search keyword with a clear search purpose and direction based on the content described in the extracted document. Therefore, the number of useless search processes is reduced, a search that reflects the user's search purpose can be performed, and the burden on the user to form a keyword by himself can be reduced.

In addition, at first, it is necessary to perform a search by giving an original keyword as in a full-text search system search, but once the document information is obtained by the search,
In a search using a search history keyword, it is extremely unlikely that a meaningless one-off search is repeated.

The method described in the above-described embodiment includes, as programs that can be executed by a computer, for example, a magnetic disk (floppy disk, hard disk, etc.), an optical disk (CD-ROM,
It is also possible to write the data on a recording medium such as a DVD or a semiconductor memory and apply it to various devices, or to transmit it via a communication medium and apply it to various devices. A computer that realizes the present apparatus reads the program recorded on the recording medium, and executes the above-described processing by controlling the operation of the program.

[0067]

As described above, according to the present invention, a search keyword used in a search is registered in a corresponding document as a search history keyword, and a document search can be performed with reference to the search history keyword. In this case, the search history keyword registered in the document is not a simple search keyword, but a search keyword whose purpose and direction of the search is clear based on the content described in the dependent document. This is because if the searched document is a document that meets the search purpose, the search history keyword of the document further has a keyword for searching for a document related to the document.
That is, a document that could not be found with the keyword at that time can be searched by using the search history keyword.

Therefore, while judging the contents of the document,
By performing a search using the search history keywords registered in the document, the number of unnecessary search processes is reduced, a search that reflects the user's search purpose can be performed, and search omissions can be reduced. Can reduce the burden of forming keywords on their own.

Further, since the search history keyword is registered in the document every time a search is performed, the effect is further enhanced by frequently performing various types of searches by many users. In other words, even in the search for the same document, since various approach methods using search history keywords are accumulated, more related documents can be searched more efficiently.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a document search device according to an embodiment of the present invention.

FIG. 2 is a block diagram showing an internal configuration of the control device shown in FIG.

FIG. 3 is an exemplary flowchart showing the operation of a search process in the embodiment.

FIG. 4 is a flowchart showing a specific process of step S3 shown in FIG. 3;

FIG. 5 is a flowchart showing a specific process of step S9 shown in FIG. 3;

FIG. 6 is a flowchart showing specific processing of step S10 shown in FIG. 3;

FIG. 7 is an exemplary view showing contents of a search keyword storage buffer in the embodiment.

FIG. 8 is an exemplary view showing contents of a search document information storage buffer in the embodiment.

FIG. 9 is an exemplary view showing contents of a search document storage buffer in the embodiment.

FIG. 10 is an exemplary view showing contents of a selected title number storage buffer in the embodiment.

FIG. 11 is an exemplary view showing contents of a search history keyword storage buffer in the embodiment.

FIG. 12 is an exemplary view showing contents of a search history matching number storage buffer in the embodiment.

FIG. 13 is an exemplary view showing contents of a difference information storage buffer in the embodiment.

FIG. 14 is an exemplary view showing a search keyword input screen in the embodiment.

FIG. 15 is an exemplary view showing a search result list display screen in the embodiment.

FIG. 16 is an exemplary view showing a registered document display screen in the embodiment.

FIG. 17 is an exemplary view showing a search history reference screen in the embodiment.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 input device 2 control device 3 external storage device 4 display device 200 control unit 210 document search processing unit 211 system initialization unit 212 search keyword input unit 213 search unit 214 display unit 220 keyword Control unit 221 title selection unit 222 registration unit 223 reference unit 224 difference information unit 225 search history selection unit 226 search history configuration unit 230 buffer unit 231 search keyword storage buffer 232 search document information storage buffer 233 ... search document storage buffer 234 ... selected title number storage buffer 235 ... search history keyword storage buffer 236 ... search history pertinent number storage buffer 237 ... difference information storage buffer 238 ... selected search history number storage buffer 239 ... search mode storage buffer 310 ... title Storage area 32 0: Document storage area 330: Search history storage area

Claims (4)

[Claims] An input unit for inputting a search keyword including an arbitrary character string; a first document search unit for performing a document search based on the search keyword input by the input unit; and a first document search. Search history registration means for registering, as a search history keyword, a search keyword used at the time of searching each document in all documents or an arbitrary document in the search results obtained by the means; Selecting means for selecting a document to be referred to; second document searching means for performing a document search by referring to the search history keyword of the document selected by the selecting means; and first or second document search Display means for displaying search results obtained by the means. 2. A search history display means for displaying a search history keyword of a document when a document which refers to the search history is selected by the selection means, wherein the second document search means comprises: 2. The method according to claim 1, wherein a new search keyword is created based on a keyword selected from the search history keywords displayed by the search history display means, and a document search is performed based on the search keyword. Document search device. 3. When a search keyword consisting of an arbitrary character string is input, a document search is performed based on the input search keyword, and all or an arbitrary document in a search result obtained by the document search is obtained. The search keywords used when searching for each document are registered as search history keywords, and when a document that refers to the search history is selected from the above search results, the search that the selected document has A document search method, wherein a document search is continuously performed with reference to a history keyword. 4. A procedure for inputting a search keyword consisting of an arbitrary character string to perform a document search based on the input search keyword, and for all documents or all documents in the search results obtained by the document search. The procedure for registering the search keyword used in the search of each document as a search history keyword in an arbitrary document. When a document that refers to the search history is selected from the above search results, the selected document is deleted. A computer-readable medium having recorded thereon a program for causing a computer to execute a procedure for continuously performing a document search by referring to the search history keyword.