JPH08255163A - Document retrieval device - Google Patents

Abstract

PURPOSE: To efficiently specify a document that a retriever intends by displaying a retrieved document so that an input retrieval word and a relative retrieval word can be discriminated from other parts of the document and the input retrieval word and relative retrieval word are different in style. CONSTITUTION: When the retriever inputs a keyword for retrieval, a character string expanding process part 11 expands each key word into key word relative words on the basis of an expanding process table 12. Then the character string expanding process part 11 outputs retrieval words consisting of respective key words and key word relative words, and kinds showing that each retrieval word is a key word, a notation fluctuation, or a synonym to a display control part 15, which generates an emphasized data management table 15b. Further, a document having a key word or a relative word in the key word is taken out of a document database 14 and emphasized and displayed according to the kind of the key word or key word relative word.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a document retrieval apparatus which retrieves a document from a document storage unit for storing a plurality of documents and displays the contents of the document on a display unit, and more particularly to a display unit for displaying the contents of the document. The present invention relates to a document search device that uses a plurality of highlighting modes to display a document.

[0002]

2. Description of the Related Art In a conventional document search apparatus, a searcher designates a keyword (input search word) to search a plurality of documents having the keyword from a document database and refer to each searched document. It is common to obtain the desired document by.

In particular, in recent document search apparatuses, when a searcher inputs a keyword, not only the document having the keyword but also the notation fluctuations, synonyms and synonyms closely related to the keyword (hereinafter referred to as "keyword-related word"). ".")
In many cases, a function is added to search for a document that has a search mark and prevent the document from being missed.

For example, when the searcher inputs "user" as a keyword, the document search device does not search only "user" as a search word, but this "user".
The keyword-related words such as "user" having a relation of notation, "user" having a synonym relation, and "operator" having a synonym relation are also searched as search terms.

When the document retrieved in this way is displayed on the screen, the keyword inputted by the searcher himself and the keyword-related word (related search word) related to the keyword are highlighted. Often, it is easy to identify a desired document.

FIG. 8 is a diagram showing an example of a conventional technique for highlighting a search document.

For example, when the document shown in FIG. 8 (a) is searched, as shown in FIG. 8 (b), the keyword "user" input by the searcher and the keyword-related word of the keyword. “User”, “user”, and “operator” are highlighted.

When performing such highlighting, it is common to display the keyword and the keyword-related word in the same highlighting form, but a technique using a plurality of highlighting forms is also known.

For example, in Japanese Unexamined Patent Publication No. 5-274314, a group of keywords and keyword-related words related to the keywords is created for each keyword, and a different emphasis pattern is assigned to each group in advance. When highlighting the keywords and keyword-related words that belong to the searched document, it is determined which group each word belongs to, and the words are emphasized by the emphasis pattern assigned to the determined group. A document processing device configured to perform is disclosed.

That is, in this prior art, a keyword-related word derived from a certain keyword is displayed in the same emphasized form as the keyword, and the keyword and the keyword-related word (hereinafter, these generic names are referred to as "keyword group"). It is useful in clarifying the correspondence relationship between (.) And distinguishing the important keyword group and the less important keyword group.

[0011]

However, in this prior art, since the words belonging to the same keyword group are displayed in the same emphasized form, the keywords are distinguished from the keyword-related words automatically generated by the document search device from the keywords. Can not do it.

Therefore, a keyword such as a technical term having a very important weight when identifying a document,
This may result in displaying related words that are not directly related to the search in the same emphasized form, which may be a hindrance factor in specifying the document intended by the searcher.

Originally, the keyword input by the searcher is carefully selected by the searcher as the information for specifying the intended document, and the keyword is handled in the same manner as the keyword-related word automatically generated by the document search device. Is impossible.

For example, when "user" is input for the purpose of obtaining a document related to a computer user interface, the words "user" and "operator" which are keyword-related words of the keyword play a role. , Obviously smaller than the "user". This "user" is a word or phrase that reminds me of customer management, and the "operator" is a word or phrase that reminds me of an operator or the like.

Therefore, how to efficiently identify the document intended by the searcher from the documents retrieved using the keyword and the keyword-related word has been an important issue.

Therefore, in the present invention, the above problems are solved,
An object of the present invention is to provide a document search device that can efficiently identify a document intended by a searcher from documents searched using an input search word and a related search word.

[0017]

In order to achieve the above object, the first invention is a document retrieval apparatus for extracting a document from a document storage unit storing a plurality of documents and displaying the contents of the document on a display unit. , Input means for inputting an input search word, expansion means for expanding the input search word into a related search word related to the input search word, and expansion by the input search word input by the input means or the expansion means A document search means for searching the document storing means for a document including the related search word, and the input search word and the related search word when displaying the content of the document searched by the search means on the display unit. Is provided so as to be distinguishable from other parts of the document, and display control means for displaying the input search word and the related search word in different modes.

The second invention further comprises search word information holding means for holding a correspondence relationship between a search word composed of the input search word and the related search word and a display mode of the search word, and the display is provided. The control means specifies the display mode of the search word contained in the document searched by the search means based on the search word information holding means, and displays the search word on the display section in the specified display mode. Is characterized by.

The third invention is characterized by further comprising changing means for changing the display mode of the search word stored in the search word information holding means for each type of the search word.

[0020]

According to the first aspect of the present invention, when an input search word is input from the input means, the expanding means expands the input search word into a related search word and includes the input search word and the related search word. The document retrieval means retrieves a document from the document storage means. Then, the display control means displays the searched document so that the input search word and the related search word can be distinguished from other parts of the document, and the input search word and the related search word are displayed on the display unit in different modes.

As a result, it is possible to efficiently specify the document intended by the searcher from the documents searched using the input search word and the related search word.

According to the second aspect of the invention, the search word information holding means holds a correspondence relationship between a search word consisting of an input search word and a related search word and a display mode of the search word, The display control unit specifies the display mode of the search word included in the searched document based on the search word information holding unit, and displays the search word on the display unit in the specified display mode.

As a result, it becomes possible to easily perform the highlighted display corresponding to the input search word and the related search word.

In the third invention, the display mode of the search word stored in the search word information holding means is changed for each type of the search word by using the changing means.

As a result, it is possible to flexibly change the display mode of the search word.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a document search device according to the present invention will be described below with reference to the drawings.

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

As shown in FIG. 1, this document retrieval device 1
Includes an input unit 10, a character string expansion processing unit 11, a expansion processing table 12, a document search unit 13, a document database 14, a display control unit 15, and a display unit 16.

The input unit 10 is an input device for the searcher to input keywords and the like, and is composed of a keyboard, a mouse and the like.

The character string expansion processing unit 11 is a processing unit that expands the keyword received from the input unit 10 into a keyword-related word using the expansion processing table 12, and the keyword and the keyword-related word (hereinafter referred to as "search word"). Are collectively referred to as “.”) To the document search unit 13, and the types of the search word and each keyword-related word (notation variation, synonym, and synonym) are output to the display control unit 15.

The expansion processing table 12 is a table used when the character string expansion processing unit 11 expands an input keyword into a keyword-related word.
In 2, the correspondence between preset keywords and keyword-related words is stored.

The document retrieval unit 13 is a character string expansion processing unit 11
A document having any of the search terms received from the document database 14 is searched, and the search result is displayed by the display control unit 1.
5 is a processing unit for outputting to 5.

Specifically, the search word received from the character string expansion processing unit 11 is collated with the keyword included in the document registered in the document database by using a keyword management table (not shown) or the like, and the document having the search word is collated. The file number and so on are output to the display controller 15.

When a document request is made from the display control unit 15 to the document retrieval unit 13, the document retrieval unit 13 again retrieves the relevant document file from the document database 14 and displays it. Output to.

The document database 14 is a database that stores created documents and technical documents as files.

When the display control unit 15 receives the search results from the document search unit 13, the display control unit 15 displays the search results in a list on the display unit 16, retrieves the documents designated by the searcher from the document database, and emphasizes them on the display unit 16. The display unit is a control unit for displaying, and when displaying the document, different types of emphasis are used for each type such as a keyword, a change in notation, a synonym, and a synonym.

The display control unit 15 also has a highlight display processing unit 15a and a highlight data management table 15b.

The highlighting processing unit 15a includes a document search unit 13
Is a processing unit that highlights a search word included in the searched document. Specifically, when the document search unit 13 receives the file number of the searched document, the document file is sent to the document search unit 13 through the document search unit 13. The retrieval words included in the document displayed on the display unit 16 are highlighted for each type while being sequentially fetched from the database 14 and displayed on the display unit 16.

The emphasized data management table 15b is a table for storing the correspondences between keywords, notational fluctuations, synonyms and synonyms and their display forms.

The display unit 16 is an output device for displaying a document and is composed of a display device or the like.

In the present embodiment, the case where the input unit 10, the display control unit 15, and the display unit 16 are components of the document retrieval apparatus 1 will be described. However, a workstation having such a function can be used as a document via a network. Search device 1
It is also possible to connect to and search for documents.

Next, the hardware configuration of the document retrieval apparatus 1 having the above configuration will be described.

FIG. 2 is a diagram showing a hardware configuration of the document search device 1 shown in FIG.

As shown in FIG. 2, when the document retrieval apparatus 1 is viewed from the hardware side, the CPU 20 and the memory 2
1, a hard disk 23, a keyboard 24, a mouse 25, a display 26, a network interface unit 26 (hereinafter, “network I / F unit 26”).
Say. ) And are connected to the bus 27.

The CPU 20 is a central processing unit that loads and executes the program stored in the memory 21, and specifically, the expansion processing performed by the character string expansion processing unit 11 and the document retrieval unit 13 shown in FIG. Search processing and display control unit 1
5 performs display control processing and the like.

The memory 21 is a storage unit for storing various programs and tables, and is composed of a random access memory (RAM), a read only memory (ROM) and a non-volatile memory (NVRAM).

Specifically, various programs including the operating system (0S) are held in the ROM, and the expansion processing table 12 and the emphasized data management table 15b shown in FIG. 1 are held in the RAM or NVRAM. .

The hard disk 23 is a storage medium for storing various documents as files, and corresponds to the document database 14 shown in FIG.

The keyboard 24 and the mouse 25 correspond to the input unit 10 shown in FIG.
Various keywords are input from the mouse 25
Use to specify the document to be displayed and select various icons.

The display 26 is a display device for displaying the document of the retrieved document while emphasizing the keyword and the related keyword, and corresponds to the display unit 16 shown in FIG.

The network I / F unit 26 is a processing unit used when connecting the document searching apparatus 1 to various networks such as a local area network (LAN), and controls the interface with the network.

Next, the emphasis management table 15b shown in FIG.
Will be described.

FIG. 3 shows the emphasis management table 15 shown in FIG.
It is a figure which shows an example of b.

As shown in FIG. 3, the emphasis management table 15b is composed of a pair of the search word 3a and the display form number 3b. Specifically, the input form "user" has the display form number "0". The display form numbers '1', '2', and '3' are respectively associated with "user", which is a variation in notation of the keyword, "user", which is a synonym, and "operator," which is a synonym. It is attached.

The display form number is an identification number of the form type at the time of highlighting. In this embodiment, the display form number "0" is associated with the frame display of the word.
A thick underline corresponds to 1 ', a thin underline corresponds to' 2 ', and a dotted underline corresponds to' 3 '.

That is, in the present embodiment, it is determined that the input keyword, the variation of the notation, the synonym, and the synonym have higher importance in the search, and the display form is determined according to the importance.

Further, in the present embodiment, the search word is arranged for each keyword for convenience of explanation, but the search word may be arranged for each display form number to improve the efficiency of the display process. Is.

Next, the processing procedure of the document retrieval apparatus 1 shown in FIG. 1 will be described.

FIG. 4 is a flow chart showing the processing procedure of the document retrieval apparatus 1 shown in FIG.

As shown in FIG. 4, when a searcher inputs a keyword for a search from the input unit 10 (step 40).
1) The character string expansion processing unit 11 expands each keyword into a keyword-related word based on the expansion processing table 12 (step 402).

Then, the character string expansion processing section 11 determines whether or not each search word consisting of each keyword and keyword-related word is a keyword, a notational variation, a synonym, or a synonym. Is displayed on the display control unit 15, and the display control unit 15 that has received the search word and the type creates the emphasized data management table 15b (step 403).

Further, the character string expansion processing section 11 outputs the search word to the document search section 13, and the document search section 13 which has received this search word retrieves the document having the search word from the document database 14. Search (Step 4)
04).

In this embodiment, the document retrieval unit 13
The case where the file number of a document having a search word and the number of search words included in the file are output as the search result will be described. However, not only the document having the search word is specified but each search word appears in the document. The position to be turned on can be output to the display control unit 15.

Next, the display control unit 15 having received the search result displays a list of the searched document names and the number of search words included in each document on the display unit 16 (step 405).

When the searcher designates any document to be displayed on the display unit 16 (step 406), the display control unit 15 requests the document search unit 13 for the document and receives the request. The document retrieval unit 13 retrieves the document file from the document database 14 and displays it in the display control unit 1.
5 (step 407).

Then, the display control unit 15 that has received this document displays the document contents on the display unit 16 while highlighting the search terms included in the document based on the highlighted data management table 15b (step 408). .

The searcher who has confirmed the displayed document is
When a predetermined key operation is performed to request the display of the next document (step 409), the list display shown in step 405 is performed again and the processes of steps 405 to 408 are repeated, while the next document is displayed. If there is no need to display, the above series of processing is terminated.

The overall processing of the document retrieval apparatus 1 according to the present invention has been described above. Next, the display control unit 15
The highlighting process performed in step 408 will be described in more detail.

FIG. 5 is a flow chart showing a highlight display processing procedure performed by the highlight display processing section 15a provided in the display control section 15.

As shown in FIG. 5, when the document retrieval unit 13 receives the document data retrieved from the document database 14, the display control unit 15 displays the document on the display unit 16 (step 501) and After specifying the search word and its position appearing in (step 502), the display mode of the search word is confirmed using the highlighted data management table 15b (step 503).

Then, based on the display mode, the document displayed on the display unit 16 is highlighted by using different display modes for each of the keywords, notational fluctuations, synonyms and synonyms (step 504).

If another search word exists (step 505), the process proceeds to step 502 and the above steps 502-504 are repeated. If no other search word exists, the process ends.

By performing the series of processes described above, the document can be highlighted for each type of keyword and keyword-related word based on the content of the highlighted data management table 15b.

In the above description, the case where the character string expansion processing unit 11 expands the input keyword into all the keyword related words registered in the expansion processing table 12 has been described. However, the expansion range and the highlighted display form It is also possible for the searcher to specify.

FIG. 6 is a diagram showing an example of a window used when the searcher selects the expansion process and the highlighted display form.

As shown in FIG. 6, this window 60
Is an input keyword 60a, notational fluctuation 60b, synonym 6
0c, the synonym 60d, and the co-occurrence related word 60e, the highlighting form number 60g and its display example 60h, and the expansion processing ON / OFF 60 indicating whether or not the expansion processing is to be performed.
h and highlighting ON / OF indicating whether to highlight
F60i is provided.

Here, the highlighted form of the input keyword 60a, the notational fluctuation 60b, the synonym 60c, the synonym 60d, and the co-occurrence related word 60e are respectively displayed in a frame, thick underline, thin underline, dotted underline, and wavy underline. And again
It shows a case where expansion processing and highlighting are performed excluding co-occurrence related words.

The co-occurrence related word 60e means a word or phrase closely associated with the keyword, and corresponds to, for example, "interface" when the keyword is "user".

The searcher uses the window 60 to
By specifying whether or not to perform the expansion process, whether or not to perform the highlighting display, and the highlighting display mode, the searcher can select the range to be expanded and the highlighting mode.

Next, a display example when the document search apparatus according to this embodiment is used will be described.

FIG. 7 is a diagram showing a display result in which the document shown in FIG. 8A is highlighted by using the highlighting mode shown in FIG.

As shown in FIG. 7, this display result is framed with respect to the input keyword "user".
The notation “user” is underlined in bold, the synonym “user” is underlined thin, and the synonym “operator” is underlined in dotted line. There is.

By referring to the display result, it is understood that the keyword "user" input by the searcher himself is most emphasized, which can contribute to the specification of the document intended by the searcher.

Since the keyword-related words that are more closely related to the keyword are strongly emphasized, it is possible to specify the intended document while considering the importance of the keyword-related words.

As described above, in the present embodiment, the emphasized data management table 15b is created based on the keyword input from the input unit 10 and the keyword-related word developed from the keyword, and the keyword or keyword Document database 1 for documents with related words
4 is configured to be highlighted according to the type of the keyword or the keyword-related word. Therefore, when displaying the content of the document having the keyword or the keyword-related word, the keyword or the keyword-related word is displayed according to the degree of importance. By highlighting, it becomes easy to efficiently identify the document intended by the searcher from the search documents.

In the present embodiment, the character string expansion processing unit 1
1 outputs a keyword, a keyword-related word, and the type of the keyword-related word to the display control unit 15, and based on the highlighted display data management table 15b created from such information, different highlighting is performed for each type of each search word. However, the present invention is not limited to this, and when the document search unit 13 searches for a document, the position of the phrase to be highlighted and the highlighted mode are specified, and the position of this phrase is specified. Also, the display control unit 15 can be configured to perform highlighting based on the display mode.

[0087]

As described above in detail, in the first invention, when an input search word is input from the input means, the input search word is expanded into a related search word, and the input search word and the related search are executed. A document including a word is searched from the document storage means, the searched document can be distinguished from the input search word and the related search word from other parts of the document, and the input search word and the related search word are different from each other. Since it is configured to display on the display unit, from the documents searched using the input search word and the related search word,
It is possible to efficiently specify the document intended by the searcher.

Further, according to the second aspect of the present invention, the document retrieved based on the correspondence between the search word composed of the input search word and the related search word held in the search word information holding means and the display mode of the search word. Since the display mode of the search word included in is specified and the search word is displayed on the display unit in the specified display mode, it is possible to easily perform the highlighted display corresponding to the input search word and the related search word. Becomes

Further, in the third aspect of the invention, since the display mode of the search word stored in the search word information holding means is changed for each type of the search word, the display mode of the search word is flexibly changed. It becomes possible.

[Brief description of drawings]

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

FIG. 2 is a diagram showing a hardware configuration of the document search device shown in FIG.

FIG. 3 is a diagram showing an example of an emphasis data management table shown in FIG.

FIG. 4 is a flowchart showing a processing procedure of the document search device shown in FIG.

5 is a flowchart showing details of the highlighting process shown in FIG.

6 is a diagram showing an example of a window used when designating a highlighted display form or the like from the input unit shown in FIG.

7 is a diagram showing an example of highlighting in the highlighting mode shown in FIG.

FIG. 8 is a diagram showing an example of a conventional highlighting result.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 document search device, 10 input section, 11 character string expansion processing section, 12 expansion processing table, 13 document search section, 14 document database, 15 display control section, 1
5a highlighted display processing unit, 15b highlighted data management table, 16 display unit, 20 CPU, 21 memory, 22 hard disk, 23 keyboard, 2
4 mouse, 26 network I / F

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akio Yamashita 3-2-1 Sakado, Takatsu-ku, Kawasaki City, Kanagawa Prefecture KSP R & D Business Park Building Fuji Xerox Co., Ltd. (72) Hiroshi Yamaguchi Sakado, Takatsu-ku, Kawasaki City, Kanagawa Prefecture 3-2-1 KSP R & D Business Park Building in Fuji Xerox Co., Ltd. (72) Inventor Yuko Matsuo 3-2-1 Sakado, Takatsu-ku, Kawasaki City, Kanagawa Prefecture KSP R & D Business Park Building in Fuji Xerox Co., Ltd. (72) Inventor Kita Tatsuomi 3-2-1, Sakado, Takatsu-ku, Kawasaki-shi, Kanagawa KSP R & D Business Park Building, Fuji Xerox Co., Ltd. (72) Inventor Kazuo Aihara 3-2-1, Sakado, Takatsu-ku, Kawasaki-shi, Kanagawa KSP R & D Business Park Building Fuji Xerox Co., Ltd. (72) Inventor Naomi Hiraoka 3-2-1 Sakado, Takatsu-ku, Kawasaki City, Kanagawa Prefecture KSP R & D Business Park Building Fuji Xerox Co., Ltd.

Claims (3)

[Claims] 1. A document retrieval device for extracting a document from a document storage unit for storing a plurality of documents and displaying the contents of the document on a display unit; an input unit for inputting an input search term; A developing means for expanding the related search word related to the input search word, and a document for searching the document storing means for a document including the input search word input by the input means or the related search word expanded by the expanding means. Search means, and when the content of the document searched by the search means is displayed on the display unit, the input search word and the related search word can be distinguished from other parts of the document, and the input search word and And a display control unit that displays the related search word in a different manner. 2. A search word information holding unit that holds a correspondence relationship between a search word composed of the input search word and the related search word and a display mode of the search word, the display control unit, the display control unit, Specifying the display mode of the search word included in the document searched by the means based on the search word information holding means,
The document search device according to claim 1, wherein the search word is displayed on the display unit in the specified display mode. 3. The document search device according to claim 2, further comprising a changing unit that changes a display mode of the search word stored in the search word information holding unit for each type of the search word.