JPH05181912A - Document retrieving device - Google Patents

Abstract

PURPOSE:To obtain a document retrieving device which efficiently retrieves a document matched with the retrieval intention of a user. CONSTITUTION:The user inputs a retrieval sentence from an input device 2. A controller 1 segments a retrieval key word and retrieves a document including the retrieval key word. When no corresponding document, is present thereon the controller 1 displays a list of synonyms corresponding to the key word. The user selects the synonym in the displayed synonym list through the input device 2. The controller 1 relates and registers the segmented key word and selected synonym in a user theasurus in a user theasurus part 7. When the user inputs the key word of synonym which is registered in the user threasurus, the controller 1 retrieves the document by using the mutually related key word and synonym as a retrieval key word.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a document search device for searching a document containing a search keyword.

[0002]

2. Description of the Related Art In a conventional document search apparatus in which a user inputs a keyword and extracts a document containing the keyword, the user writes a natural sentence (hereinafter referred to as "search sentence") such as "characteristic of the search apparatus". When input, a search keyword is cut out from the search sentence by a matching process using a word dictionary or a morphological analysis process, and a document including the cut out search keyword is extracted.

However, unless the description is exactly the same as the search keyword, it cannot be extracted as a document to be searched. Therefore, even if similar words such as "computer" and "computer" are searched for, the search keyword is "computer".
If the search target document is "computer", the document cannot be extracted. Therefore, in order to eliminate such omission of extraction, the user adds a search keyword by looking up a dictionary or the like.

[0004]

As described above, in the conventional method, when a document including synonyms of a search keyword is extracted in order to eliminate omission of extraction, a large number of documents far from the user's search intention are extracted. There was a problem of giving to. Further, a method in which the user selects and inputs an accurate synonym from the dictionary also reduces the search efficiency and becomes a burden on the user.

In the case where the user selects a synonym by thinking or by looking up a dictionary, inputs a search keyword using an input means such as a keyboard, and inputs the search keyword while specifying and and or, There is a problem that the work is heavy for the user.

In addition, when a computer automatically processes a synonym and adds the synonym to the search keyword input by the user as or, or when the synonym is uniformly used as the search keyword,
It will be extracted that is far from the user's search intention. For example, the synonyms of "form" include "shape, make, shape, shape, shape, trait, variant, deformation, shape", and each has a different meaning. Synonyms are determined by what type of user the user is looking for. These words are certainly synonyms of "form", but using all the words as search keywords is far from the user's search intention.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a document search device capable of efficiently searching for a document that matches a user's search intention.

[0008]

In order to achieve the above object, the present invention provides a synonym list of input keywords in a document retrieval apparatus that retrieves a document containing a retrieval keyword from a plurality of retrieval target documents. Display means for referring to and displaying a dictionary, user synonym dictionary section for registering the user synonym dictionary, and the user synonym dictionary section by associating the input keyword with the synonym selected from the synonym list. And a search means for registering in the user thesaurus and also when any of the keywords or thesauruses registered in the user thesaurus and related to each other is input, the document is searched using the keyword and thesaurus as search keywords. It is characterized by having.

[0009]

When the user inputs a keyword, the display means displays a synonym list of the input keyword. Here, when the user selects a synonym from the synonym list displayed by the display means, the search means associates the input keyword with the selected synonym and registers them in the user synonym dictionary of the user synonym dictionary section. .. When the user inputs a keyword or a synonym registered in the user synonym dictionary, the search means searches the document by using the keyword and the synonym related to each other as the search keyword.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing a schematic configuration of an embodiment of a document search device according to the present invention.

The present apparatus comprises a control device 1 as a search means composed of a CPU, a memory, etc., an input device 2 for a user to input a search sentence or a search operation with a keyboard or a mouse, and an input device 2. A display device 3 as a display unit for displaying a search sentence, a search operation instruction, a search result, and a synonym selection screen input from a synonym dictionary unit 5 that stores a synonym dictionary of keywords in advance, and a user synonym dictionary. A user synonym dictionary unit 7 for storing, a keyword dictionary unit 6 for storing a keyword dictionary, and an external storage device 4 for storing documents to be searched and the like are roughly configured.

As shown in FIG. 2, the control device 1 includes an initialization unit 201, a data reading unit 202, a data storage unit 203, a keyword cutting unit 204, and a matching unit 2.
05, a synonym selection screen display unit 207, a synonym selection unit 208,
The synonym inversion display unit 209, the user synonym dictionary creation unit 210, each processing unit of the search sentence generation unit 211, and each buffer of the temporary storage buffer 212, the work buffer 213, and the keyword storage buffer 214.

The initialization unit 201 initializes each of the buffers 212 to 214. Data reading part 2
Reference numeral 02 denotes a buffer of the original sentence of the search target document extracted as a corresponding document by the search from the external storage device 4, the thesaurus dictionary stored in the thesaurus dictionary unit 5 and the user thesaurus dictionary stored in the user thesaurus dictionary unit 7. The data is read into 212 to 214. The data storage unit 203 stores data in the external storage device 4. The keyword cutout unit 204 refers to the keyword dictionary stored in the keyword dictionary unit 6 from the search text input from the input device 2, cuts out the search keyword, and stores it in the keyword storage buffer 214. Matching unit 20
5 is for determining whether or not the search keyword is included in the search target document.

As shown in FIG. 4, the synonym selection screen display unit 207 reads synonyms of words (“search”, “apparatus”, “special color”) stored in the keyword storage buffer 214 from the synonym dictionary unit 5. , The display device 3 as shown in FIG.
Is to be displayed.

The synonym selection unit 208, as shown in FIG.
The synonyms of the search keyword displayed by the synonym selection screen display unit 207 are selected based on the user's selection operation by the position input means such as a mouse. The selection is made by the user instructing the vicinity of the displayed synonyms, and is finished by designating the [end setting] icon.
The figure shows the case where "system", "feature" or "feature" is selected.

As shown in FIGS. 8 and 9, the synonym reverse display unit 209 displays synonyms selected by the synonym selection unit 208 and synonyms registered in the user synonym dictionary of the user synonym dictionary unit 7 (“system”, "Characteristics" and "Characteristics" are subjected to character modification such as reverse display.

The user synonym dictionary creating section 210 creates the synonyms of the keywords selected by the synonym selecting section 208 by the user as one group, and the user synonym dictionary section 7
The file is saved in.

The search sentence generator 211 includes a synonym selector 208.
A logical expression of the synonym selected in step 3 and the synonym stored in the user synonym dictionary unit 7 and the search keyword in the search sentence input by the user is generated. This logical expression is a logical sum of the original search keyword and the selected synonyms.

As shown in FIG. 7, the initial screen of the display device 3 displays the commands [search], [synonym display], and [end]. If a search sentence is input from the input device 2 on the screen of the display device 3,
The search sentence is also displayed. In the case of the figure, it is displayed as a search sentence in which "features of the search device" are input.

The synonym dictionary stored in advance in the synonym dictionary section 5 is such that synonyms are grouped and each group is numbered, as shown in FIG.
For example, in the figure, the group consisting of “feature”, “feature”, “feature”, “attribute”, “individuality”, “feature” and “feature” is numbered 20 and “train” and “toden” ， “City tram”
And the group consisting of "subway" is numbered 31,
The group consisting of "image", "image" and "figure" is numbered 32. In the user synonym dictionary stored in the user synonym dictionary unit 7, as shown in FIG. 6, the words selected by the user from the synonym dictionary of the synonym dictionary unit 5 by the synonym selecting unit 208 are numbered for each group and stored. This number corresponds to the number assigned to each group of the thesaurus dictionary of the thesaurus dictionary unit 5. In the figure, "device", "system", "feature", "feature" and "feature"
Shows an example in which is registered as a user thesaurus. 15 for a group consisting of "devices" and "systems"
Numbers are assigned, and the group consisting of "features", "features", and "features" is assigned the number 20.

Next, the operation of the document retrieving apparatus of the present embodiment having the above structure will be described with reference to the flow charts shown in FIGS.

First, each buffer is initialized (S30).
1). It is determined whether or not the [End] button has been clicked (S302), and if clicked, the process ends (S31).
8). The user inputs a search sentence from the input device 2 such as a keyboard (S303). For example, "features of search device"
Enter as a search sentence. Next, it is determined whether or not the [synonym display] icon is clicked (S304). If not clicked in step S304, [Search]
It is determined whether or not the icon is clicked (S30
5). In step S304, the keyword extraction unit 2
04 is activated, and the keyword dictionary stored in the keyword dictionary unit 6 is referred to, and the search keyword is cut out from the search sentence input by the user (S311). For example, “search / device / feature” is cut out from “feature of search device”. The extracted keywords are stored in the keyword storage buffer 214 (FIG. 4). When the search keyword is stored in the buffer 214, a synonym processing subroutine is called (S312), and the process returns to step S302. If not clicked in step S305, the process returns to step S302. When the [Search] icon is clicked in step S305, the keyword cutout unit 204 is activated, refers to the keyword dictionary stored in the keyword dictionary unit 6, and cuts out the search keyword from the search sentence input by the user (S306). ). Then, the matching unit 205 extracts the document including the search keyword from the search target documents stored in the external storage device 4 (S307). The result is output to the display device 3 (S308). Therefore, it is determined whether or not there is a corresponding document (S309). If the relevant document exists in step S309, the process returns to step S302. If there is no corresponding document in step S309, the synonym subroutine is called (S310), and the process returns to step S302.

The synonym subroutine refers to the keyword storage buffer 214 in which the search keyword is stored (S311). Temporary storage buffer 2 for thesaurus (Fig. 3)
12 is read (S313), and a synonym of the search keyword is searched (S313). For example, "feature / feature / feature / attribute / individuality / feature / special feature" is searched from the search keyword "special feature". Then, the synonym selection screen display unit 20
7 is activated to display the synonyms searched for in step S313 (S314, FIG. 8). Subsequently, the synonym reverse display unit 209 is activated, and the keyword input by the user is subjected to the head display and reverse display (FIG. 8), and the word stored in the keyword storage buffer 212 is also displayed reversely. Give. Next, it is determined whether the user thesaurus group (FIG. 6) stored in the user thesaurus dictionary unit 7 has a user thesaurus group registered therein (S315). If the user synonym group is not registered in step S315, the synonym selection unit 208 is activated and the user can select a synonym for the position input means such as a mouse. The selection is performed by designating the neighborhood of the displayed synonym.
If specified, character decoration such as reverse video is applied (S31
7). When the user synonym group is registered in step S315, the words of the user synonym group including the keyword input by the user are also subjected to character modification such as reverse display on the synonym selection screen (S316), and the next step S317.
Go to. This step S317 is repeated until the [end setting] icon is designated (S318). [End of setting]
When the icon is designated, the search sentence generation unit 211 is activated. The selected word (a word that has been subjected to character modification such as reverse display) is additionally registered in the keyword storage buffer 214 (FIG. 5). Then, the keyword storage buffer 214
A search logical expression is generated as the logical sum of the search keywords input by the user using the word stored in (S319), and the contents of the keyword storage buffer 214 are stored in the user synonym dictionary as a group of synonyms of each keyword (S32).
0). This completes the synonym processing subroutine.

The document retrieval apparatus of the above embodiment has the following effects.

When the search keyword input by the user does not exist in the documents to be searched, the synonyms of the search keyword are automatically displayed, and the user can select the search keyword by a simple operation to add and search the search keyword. be able to. Further, by storing the synonyms selected by the user so far, the retrieval processing is automatically performed including the synonyms of the search keyword. By this search, the user does not need to guess a synonym and an unnecessary word is not used as a search keyword.

By displaying the synonyms of the search keyword in this way, the work load on the user can be reduced and the search efficiency can be improved.

The present invention is not limited to the above embodiment,
Various modifications can be made without departing from the spirit of the invention. For example, the case where the document is searched using the search keyword cut out from the input search text has been described, but the present invention can be similarly applied to the case where only the keyword is input.

[0028]

As described in detail above, according to the present invention, a synonym of an input keyword can be easily selected, and a document is searched using the keyword and the synonym as search keywords.
It is possible to provide a document search device that can efficiently search for a document that matches the user's search intention.

[Brief description of drawings]

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

FIG. 2 is a block diagram showing a schematic configuration of a control device.

FIG. 3 is a diagram showing a format example of a thesaurus.

FIG. 4 is a diagram showing the contents of a keyword storage buffer.

FIG. 5 is a diagram showing the contents of a keyword storage buffer.

FIG. 6 is a diagram showing an example of a user thesaurus.

FIG. 7 is a diagram showing a display example of a search sentence input by a user on a display device.

FIG. 8 is a diagram showing a display example of a synonym list on a display device.

FIG. 9 is a diagram showing an example of designation of synonyms on a display device.

FIG. 10 is a flowchart showing a flow of search processing.

FIG. 11 is a flowchart showing a flow of search processing.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 control device (search means) 2 input device 3 display device (display means) 4 external storage device 5 synonym dictionary unit 6 keyword dictionary unit 7 user synonym dictionary unit

Claims (1)

[Claims] 1. A document retrieval apparatus for retrieving a document containing a retrieval keyword from a plurality of retrieval target documents, comprising: display means for displaying a synonym list of input keywords with reference to the thesaurus dictionary; and a user thesaurus dictionary. The user synonym dictionary unit for registration, the entered keyword and the synonym selected from the synonym list are associated with each other and registered in the user synonym dictionary of the user synonym dictionary unit, and also registered in this user synonym dictionary. And a retrieval unit that retrieves the document by using the keyword or the synonym as a retrieval keyword when any of the related keywords or the synonyms is input.