JPH10124520A - Device for retrieving document and method therefor and medium therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily realize high level retrieval by dividing an inputted retrieval word into word units, generating retrieval keywords in the number decided according to the number of divided words of the divided word units, and operating document retrieving processing for the number by using the generated retrieval keywords. SOLUTION: A controller 3 is provided with a controlling part 300, document retrieval processing block 310, retrieval keyword generation block 320, and buffer part 330. The automatic retrieval keyword generation block 320 divides an inputted retrieval keyword into words, reunite them, and generates the retrieval keyword by referring to a dictionary 2. The document retrieval processing block 310 retrieves a pertinent document from documents to be retrieved stored in an outside storage device 4. Thus, the inputted retrieval word is word-divided, and automatically divided and reunited to various character length or patters. Therefore, the retrieval can be attained by the retrieval keyword developed into a further wide extended description pattern.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a document search device, a document search method, and a document search medium.

[0002]

2. Description of the Related Art Conventionally, there is a full text search type document search apparatus for performing a document search using an arbitrary keyword in a search target document. In such a document search apparatus, a user uses a word or a character that would be included in a document to be searched as a search key, and receives a document in which at least one of the search keys is included as a search result. I was

However, when a word or character to be searched is specified by a long description, the number of documents including such a long search key decreases in inverse proportion to the length of the search key.
It is difficult to obtain search results as desired by the user.

[0004] Therefore, a user must decompose a long character string into a plurality of short words and combine the plurality of words with a search keyword using a logical operator to perform a search using a search formula created. For example, if the search target is a “full-text search-type document search device”, it is expected that a search will not be performed using such a long search key, and thus “full-text search”, “document search”, “search”, etc. It is necessary to decompose the long key into several short words and search and refine them one by one, or create a search key in the form of "full text search OR document search OR search" and search.

[0005]

As described above, conventionally, when a long search key is used as a search target, the user himself considers a combination of meaningful words, extracts words that meet the purpose, and sequentially searches. It has been a method of narrowing down repeatedly, or combining decomposed words with logical operators and searching.

For this reason, this method requires troublesome work, leaks important words, creates meaningless words, and creates too complicated search keys. Therefore, there was a problem that the document search was not performed correctly.

Therefore, the present invention has been made to solve the above-mentioned problem. When a long search key is used as a search target, a word is divided by a user, and the divided word is converted into a search expression. A document search device that eliminates the need for configuration work and can easily realize more advanced searches.
An object of the present invention is to provide a document search method and a document search medium applied to these apparatuses and methods.

[0008]

According to the present invention, there is provided a document search apparatus for searching a document to be searched for in accordance with the presence or absence of a search keyword. Search key input means for inputting, search keyword generation means for dividing an input search word into words, and generating a number of search keywords determined by the number of divided words in the divided word units, and this search keyword generation means And a display means for displaying the search results of the document search means by using the search keywords generated by the search means.

[0009] The document search means may be configured to perform a document search process only on a specific word selected from the divided words.

Further, in the document search method by the document search device according to the present invention, a search word consisting of an arbitrary character string is inputted from a search key input means, and a search keyword generation means is provided.
The input search word is divided into words, the number of search keywords determined by the number of divided words in the divided word units is generated, and the search keywords generated by the search keyword generation means are used by the document search means. The document retrieval processing is performed for the number of documents, and the retrieval result of the document retrieval means is displayed on the display means.

Further, in addition to the above configuration, the document search device according to the present invention provides S (: n) using two or more and n or less search keywords within the range of the number of search keywords generated.
A total of (Pi) sums of recombined keywords are used to generate recombined keywords, and the recombined keywords generated by the recombined keyword generation means are used by the document search means to retrieve the S keywords. A configuration for performing a document search process can be adopted.

In this case, the document search means can perform a document search process only on a specific recombined keyword selected from the generated recombined keywords.

Further, in addition to the above configuration, the document search device according to the present invention further includes a part-of-speech information storage unit that stores word part-of-speech information corresponding to each search keyword to be generated, Part-of-speech information selecting means for selecting part-of-speech information for re-combining search keywords from among the parts-of-speech information; Using a re-combined keyword generated by the part-of-speech limited re-combined keyword generating unit by the document search unit,
Document search processing may be performed. Further, when setting a keyword, it is possible to input not only in the form of a compounded idiom but also in a sentence form.

According to such a document search apparatus and a document search method, an input search word is divided into words and automatically divided and recombined into various character lengths and patterns, so that a more widely expanded description pattern is obtained. The search can be performed with the search keyword expanded in the. By automating the process of dividing and recombining such words, it is possible to reduce the burden on the user and to cope with fluctuations in the description of various words in the search target document. Obtainable.

Further, by adding a search keyword dividing means, when setting a search word, it is possible to input not only in the form of a compound combined word but also in a document format. In addition, even when a very long search word is input, the search keyword is divided into a plurality of search keywords, and a search is performed using each pattern, so that a search applicable state can be grasped.

Furthermore, by adding means for limiting the search keywords to be subjected to the document search processing, it is possible to prevent unnecessary search processing of the keywords when performing the document search processing.

In addition, even when a very long search keyword is input, the search keyword is automatically divided and recombined into various character lengths and patterns, for example, words are exchanged and then combined, so that they can be expanded more widely. Is expanded to the described description pattern. The expanded search keywords can cope with fluctuations in the description of various words in the search target sentence, and can obtain a wide range of search results.

Further, since the number of automatically generated search keywords is proportional to the number of words to be divided, necessary search keywords can be generated and searched without fail from all search words.

Further, when re-combining the divided words, the part of speech of the words can be selected and limited, so that the search keywords generated by the re-combination can be narrowed down to words having high semantic significance. Thereby, the amount of search processing is reduced, and information acquisition is performed more smoothly.

The document search medium of the present invention includes an input line for a user to input a search keyword, a determination, a part of speech selection,
Each item for a search operation including a cancel selection button, a search condition expression display field for displaying an automatically generated search condition expression, a previous candidate, a next candidate selection button, and an execute, end selection button The information is stored in association with the document search processing.

According to this document search medium, since each item information for the above-described search operation is stored in association with the document search processing, a document that exhibits the above-described operations by using this document search medium. A search process can be realized.

[0022]

Embodiments 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 an embodiment of the present invention. This document search device is a control device including an input device 1 for a user to input a search word (search keyword) composed of an arbitrary character string and performing a search operation using a keyboard or the like, a dictionary 2, a CPU, and a memory. 3, an external storage device 4 for storing data of a search target document, a display device 5 for displaying search results and the like, and an auxiliary storage device 6 such as a floppy disk drive device connected to the control device 3. I have it.

As shown in FIG. 16, the auxiliary storage device 6 displays an input line for the user to input a search keyword, selection buttons for confirmation, part-of-speech selection, and cancellation, and an automatically generated search condition expression. Search condition expression (generation search expression)
The floppy disk 7, which is a document search medium, in which each item information for a search operation including a display column, a selection button of a previous candidate and a next candidate, and a selection button of execution and end is stored in association with a document search process. Thus, the item information is sent to the display device 5 under the control of the control device 3. The control device 3 includes a control unit 300 and a document search processing block 3
10, a search keyword generation block 320, and a buffer unit 330. The control section 300 controls the overall operation of the present apparatus, and controls the operation of each processing block, transfers data between them, and the like.

FIG. 2 is a diagram showing a detailed configuration example of the control device 3. The system initialization unit 311 of the control device 3
Performs initialization of a system necessary for performing a document search.

The search keyword input unit 312 stores a character string serving as a search keyword in a search keyword storage buffer 33.
1 is stored.

The part of speech selector 313 stores the part of speech selected by the user in the selected part of speech storage buffer 333. Search part 3
Reference numeral 15 performs a search for a corresponding document from the search target documents stored in the external storage device 4 according to the search condition formula stored in the search condition formula storage buffer 338.

The display unit 314 displays a screen for inputting a search keyword (search keyword input screen) and a search result on the display device 5.

The search keyword automatic generation block 320 refers to the dictionary 2 and divides the input search keyword into words and recombines the words to generate a search keyword. 321;
Search keyword generation unit 322 and keyword selection unit 32
And 3.

The search keyword dividing section 321 converts the keywords stored in the search keyword storage buffer 331 into
Referring to the word division dictionary 21, the corresponding registered word and part of speech are stored in pairs in the division word storage buffer 338. Also,
The number of divided words is stored in the divided word number storage buffer 335.

The search keyword generation unit 322 combines the words stored in the divided word storage buffer 334 into several sentences in a permutation according to the number of divisions, and stores the combined words in the generated keyword storage buffer 336.

The keyword selection section 323 stores the keyword designated by the user from the keywords stored in the generated keyword storage buffer 336 in the search condition expression storage buffer 338 by referring to the keyword selection number storage buffer 337. .

The buffer section 330 is for storing various information necessary for the search processing of the present apparatus, and includes a search keyword storage buffer 331, a part-of-speech information storage buffer 332, a selected part-of-speech storage buffer 333, a divided word storage. It has a buffer 334, a divided word number storage buffer 335, a generated keyword storage buffer 336, a keyword selection number storage buffer 337, and a selection condition expression storage 338.

Further, the dictionary 2 includes a word division dictionary 21 and a part-of-speech dictionary 22.

As shown in FIG. 14, the word division dictionary 21 has a structure in which the registered words are associated with the parts of speech corresponding thereto.

As shown in FIG. 15, the part-of-speech dictionary 22 has a structure in which a part-of-speech number is associated with a corresponding part of speech.

Next, the operation of this 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 this embodiment. First, when the system is started, the system initialization unit 311 performs various initialization processes necessary for the search, such as clearing each buffer in the buffer unit 330 (step S1). Furthermore, the part of speech dictionary 22
, The part of speech information is stored in the part of speech information storage buffer 332.

Next, a search keyword input screen for document search as shown in FIG. 16 is read from the floppy disk 7 via the auxiliary storage device 6 and displayed on the display device 5 by the display section 314.

This search keyword input screen has an input line for the user to input a search keyword, selection buttons for confirmation, part-of-speech selection, and cancellation, and a search condition expression display for displaying an automatically generated search condition expression. It has a row, a selection button for a previous candidate and a next candidate, and a selection button for execution and termination.

When the search keyword input screen is displayed,
Search keywords can be entered. In this state, the user inputs a search keyword using the input device 1.

In the example shown in FIG. 16, the input is completed by inputting, for example, "hollow bar-shaped material" and pressing the "enter" button with a mouse or the like provided on the input device 1. The search keyword input at this time is displayed on the input line as shown in FIG. 16 and stored in the search keyword storage buffer 331 (step S2). In the search keyword input screen shown in FIG. When the “part of speech” button is pressed with a mouse or the like before confirmation, the part of speech selection unit 313 is activated, the part of speech information storage buffer 332 is referenced, and the part of speech is displayed on the part of speech selection screen as shown in FIG. Display part-of-speech information such as verbs.

The user can select the part of speech of the divided word to be automatically generated for the search keyword.
At the initial stage when the part-of-speech selection screen is displayed, in each of the check columns, a mark (for example, a check mark) indicating the selected state is displayed. When appropriate parts of speech are selected, those parts of speech are stored in the selected part of speech storage buffer 333 (step S2).

Next, under the control of the control unit 300, the search keyword division unit 321 is activated. The search keyword division unit 321 divides the input search keyword referring to the word division dictionary 21 having the storage contents as shown in FIG. 14 in units of words (step S3).

If the word obtained by this division processing is registered in the word division dictionary 21, the search keyword division unit 321 stores the registered word and part of speech for the word in the division word storage buffer 334 shown in FIG. . In addition, the search keyword division unit 321 stores the number of words divided at this time in the divided word number storage buffer 335 shown in FIG.

As described above, when the search keyword is divided into words and each word is stored in the divided word storage buffer 334, the search keyword generation unit 322 starts.
The search keyword generation unit 322 stores the divided word storage buffer 3
A generation process is performed to rejoin the word group stored in the search word into search keywords corresponding to the number of permutations of the number of divided words, and the result is stored in the generated keyword storage buffer 336 (step S4). still,
The number of words to be used is determined by the divided word number storage buffer 335.
To get from.

When the process of step S4 is completed, the display unit 314 is activated, and the display unit 314 displays the search keyword "hollow bar-shaped material" on the display device 5, as shown in FIG.
Generated keyword storage buffer 3 shown in FIG.
The search keyword stored in 36 is displayed.

The user can use this search keyword input screen to select a search keyword for actually executing a search. At the initial stage when the search keyword input screen is displayed, in each of the check boxes, a mark (for example, a check mark) indicating the selected state is displayed.

When a search keyword for which a search is desired to be executed is appropriately selected, the keyword selection section 323 stores the number (1, 2,..., Etc.) of the selected search keyword in the keyword selection number storage buffer 337.

Further, the keyword selecting section 323 refers to the selection number of the keyword selection number storage buffer 337 and stores the selected generated keyword in the search condition expression storage buffer shown in FIG. 13 (step S5).

When the processing in step S5 is completed, the search unit 315 is started, and the search unit 313 is stored in the external storage device 4 according to all the search condition expressions stored in the search condition expression storage buffer 338. The corresponding document is searched from the search target document (step S6).

When the processing in step S6 is completed, the display unit 314 is activated, and this display unit 314
The number of hits obtained by the search is sent to the display device 5 and displayed as shown in FIG.

Further, a title of a required sentence is selected through a search result list for each search keyword displayed on the search result list display screen shown in FIG.
The contents of the document corresponding to the title displayed on the registered document display screen as shown in FIG. 21 can be referred to (step S7).

If the search is to be continued further (Yes at step S8), the control returns to step S2, and a document search is performed in response to the input of a new search keyword.

Next, the flow of the search keyword dividing process in the above-described series of processes will be described in detail with reference to FIG.

From the input device 1 to the search keyword input unit 31
When a search keyword such as “hollow bar-shaped material” is input via the control unit 2, the search keyword is stored in the search keyword storage buffer 331 as shown in FIG.

At this time, the search keyword dividing unit 321 is activated by the control unit 300, and the search keyword dividing unit 321 divides the search keyword into words with reference to the word division dictionary 21 shown in FIG. 14 (step S31). ,
The words registered in the word segmentation dictionary 21 and the parts of speech are stored in the segmented word storage buffer 334 (step S32).

In this example, as shown in FIG. 10, "3" is stored in the divided word number storage buffer 335, and the registered words and the parts of speech of the divided words are stored in the divided word as shown in FIG. Stored in the buffer 334 (for example,
"Hollow, noun" etc.).

The process of step S32 is repeated for the number of words stored in the divided word storage buffer 334 (step S33).

FIG. 5 is a flowchart showing the automatic generation of the search keyword in step S4. First, the control unit 3
00, the search keyword generation unit 322 is activated, and the search keyword generation unit 322
From the number n of divided words stored in 35, a permutation S (: total sum of nPi) of one or more and n or less keywords is calculated (step S41, fifteen in this example).

Then, referring to the selected part-of-speech storage buffer 333, a search keyword is created using the divided word that is the target part of speech in the divided word storage buffer 334 (step S42) and stored in the generated keyword storage buffer 336. (Step S43). The processing from step S42 to step S43 is based on the permutation S obtained in step S41.
(Step S44).

As described above, according to the document search device and the document search method of the present embodiment, the input search word is divided into words, and automatically divided and recombined into various character lengths and patterns. In addition, a search can be performed with a search keyword expanded into a description pattern that is expanded more widely.

By automating the process of dividing and recombining such words, it is possible to reduce the burden on the user and to cope with fluctuations in the description of various words in the search target document. You can get search results.

Further, by newly adding a search keyword dividing means, when setting a search word, it is possible to input not only in the form of a compound combined word but also in a document format. In addition, even when a very long search word is input, the search keyword is divided into a plurality of search keywords, and a search is performed using each pattern, so that a search applicable state can be grasped.

Further, by adding a means for limiting a search keyword to be subjected to a document search process, it is possible to prevent a search process using an unnecessary search keyword when performing a document search process.

In addition, even when a very long search keyword is input, the search keyword is automatically divided and recombined into various character lengths and patterns, and is broadly expanded, for example, by replacing words and combining them. Is expanded to the described description pattern. The expanded search keywords can cope with fluctuations in the description of various words in the search target sentence, and can obtain a wide range of search results.

Further, since the number of automatically generated search keywords is proportional to the number of words to be divided, necessary search keywords can be generated and searched without fail from all search words.

Further, when re-combining the divided words, the part of speech of the words can be selected and limited, so that the search keywords generated by the re-combination can be narrowed down to words having high semantic significance. As a result, the amount of search processing is reduced, and search information acquisition is performed more smoothly.

[0069]

According to the present invention, an input search word is divided into words and automatically divided and recombined into various character lengths and patterns, so that a search keyword developed into a more expanded description pattern is obtained. A document search device and a document that can perform a search by using a user, and eliminate the need for a user to divide words and reconstruct the divided words into a form as a search expression, and can easily realize a more advanced search A search method can be provided.

Further, according to the present invention, it is possible to provide a document search apparatus capable of preventing a search process using an unnecessary search keyword when performing a document search process.

Further, according to the present invention, when re-combining the divided words, the part of speech of the words can be selected and limited, so that the search keyword generated by the re-combination can be converted to a word having high semantic significance. Can be narrowed down to
As a result, it is possible to provide a document search device in which the amount of search processing is reduced and search information is obtained more smoothly.

Further, according to the present invention, it is possible to provide a document search medium which can realize a document search process having the above-mentioned effects by using the document search apparatus and the document search method.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating 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 a flowchart showing an 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 S4 shown in FIG. 3;

FIG. 6 is a diagram showing contents of a search keyword storage buffer according to the embodiment.

FIG. 7 is a diagram showing contents of a part-of-speech information storage buffer in the embodiment. .

FIG. 8 is a diagram showing contents of a selected part-of-speech storage buffer in the embodiment.

FIG. 9 is a diagram showing contents of a divided word storage buffer in the embodiment.

FIG. 10 is a diagram showing contents of a divided word number storage buffer in the embodiment.

FIG. 11 is a diagram showing contents of a generated keyword storage buffer in the embodiment.

FIG. 12 is a diagram showing contents of a keyword selection number storage buffer in the embodiment.

FIG. 13 is a diagram showing contents of a search condition expression storage buffer in the embodiment.

FIG. 14 is a diagram showing a configuration of a word division dictionary in the embodiment.

FIG. 15 is a diagram showing a configuration of a part-of-speech dictionary in the embodiment.

FIG. 16 is a diagram showing a search keyword input screen in the embodiment.

FIG. 17 is a diagram showing a search keyword input screen in the embodiment.

FIG. 18 is a diagram showing a search part-of-speech selection screen in the embodiment.

FIG. 19 is a diagram showing a search hit count display screen in the embodiment.

FIG. 20 is a diagram showing a search result list display screen according to the embodiment.

FIG. 21 is a diagram showing a registered document display screen in the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Input device 2 Dictionary 3 Control device 4 External storage device 5 Display device 21 Word division dictionary 22 Part-of-speech dictionary 300 Control part 310 Document search processing block 311 System initialization part 312 Search keyword input part 313 Part-of-speech selection part 314 Display part 315 Search part 320 Search keyword generation block 321 Search keyword division section 322 Search keyword generation section 323 Keyword selection section 330 Buffer section 331 Search keyword storage buffer 332 Part of speech information storage buffer 333 Selected part of speech storage buffer 334 Division word storage buffer 335 Division word number storage buffer 336 Generation keyword Storage buffer 337 Keyword selection number storage buffer 338 Search condition expression storage buffer

Claims (7)

[Claims] 1. A search key input means for inputting a search word consisting of an arbitrary character string in a document search apparatus for searching for a document to be searched according to the presence or absence of a search keyword. Is divided into word units, and a search keyword generation unit that generates a number of search keywords determined by the number of divided words in the divided word units; and using the search keywords generated by the search keyword generation unit, A document search device comprising: a document search unit that performs a document search process for each document; and a display unit that displays a search result of the document search unit. 2. The document search apparatus according to claim 1, wherein the document search unit performs a document search process only on a specific word selected from each of the divided words. 3. A document search method for performing a document search on a search target document using a search keyword, wherein a search word consisting of an arbitrary character string is input from a search key input means, and The input search word is divided into words, the number of search keywords determined by the number of divided words in the divided word units is generated, and the search keywords generated by the search keyword generation means by the document search means are used. A document search process for the number of documents, and displaying a search result of the document search means on a display means. 4. A search key input means for inputting a search term consisting of an arbitrary character string in a document search apparatus for searching a document to be searched for depending on whether a search keyword appears or not, Is divided into words, and a search keyword generating means for generating the number of search keywords determined by the number of divided words; and S (: sum of nPi)
Recombining keyword generating means for generating a recombining keyword composed of a plurality of combinations; and document searching means for performing the S document searching process using the recombining keyword generated by the recombining keyword generating means. And a display means for displaying a search result of the document search means. 5. The document search device according to claim 4, wherein the document search unit performs a document search process only on a specific recombined keyword selected from the generated recombined keywords.
Document search device as described. 6. A search key input means for inputting a search word consisting of an arbitrary character string in a document search apparatus for searching a document for a search target document based on the presence or absence of a search key keyword. A search keyword generation unit that divides a word into words and generates a number of search keywords determined by the number of divided words, and S (S) using two or more and n or less search keywords within the range of the number of generated search keywords : Sum of nPi)
Re-combined keyword generation means for generating a re-combined keyword composed of a plurality of combinations, word-of-speech information storage means for storing word-speech information corresponding to each search keyword to be generated, and word-speech information stored in the word-speech information stored in the word-speech information storage means. A part-of-speech information selecting means for selecting the part-of-speech information for re-combining the search keywords, a part-of-speech-restricting part for re-combining the search keywords limited to the part-of-speech information selected by the part-of-speech information selecting means and generating a re-joined keyword Combined keyword generation means, document search means for performing the document search processing using the rejoined keywords generated by the part-of-speech limited rejoin keyword generation means, and display means for displaying search results of the document search means A document search device, comprising: 7. An input line for a user to input a search keyword, selection buttons for confirmation, selection of part of speech, and cancellation, a search condition expression display field for displaying an automatically generated search condition expression, and a previous candidate A document search medium characterized by storing each item information for a search operation including a next candidate selection button and an execution / end selection button in association with a document search process.