JPH08249356A - Database retrieval system - Google Patents

Abstract

PURPOSE: To speedily retrieve document data including a key word only by inputting the key word once without repeatedly selecting a different retrieval method. CONSTITUTION: This system has a database C having an index dictionary 2 wherein index information consisting of plural document data 4, key words, and information on positions in the document data 4 is registered and a link dictionary 3 wherein link information between the key words and description positions in the document data 4 is registered, a retrieval means 1 which retrieves a key word in the order of the index dictionary 2, link dictionary 3, and document data 4, a read means 1 which reads a corresponding place in the document data 4 according to the position information when the corresponding key word is found in the index dictionary 2, reads the corresponding place out of the document data 4 with the link information when the corresponding key word is found in the link dictionary 3, and reads the corresponding place out of the document data 4 when the corresponding key word is found in the document data 4, and a display means 7 which displays the contents including the read key word at a display part 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a document database such as an electronic publication, and more particularly to a database search system capable of efficiently performing a search by inputting a keyword.

[0002]

2. Description of the Related Art In a database search system that handles document data such as electronic publications, there are the following methods for searching keywords for search.

(1) A method of selecting a keyword for retrieval from keywords extracted as index information from document data when a database is created. (2) A method of following links between nodes. (3) A method of searching for search keywords entered by database users from all document data.

The above-mentioned retrieval methods (1) to (3) are arbitrarily selected by the database user when conducting a retrieval.

[0005]

However, in order to allow the database user to select a search method, it is necessary to repeatedly specify index information search, link information search, and all document data search every time the search is performed. There is. Therefore, there are disadvantages that the operation becomes complicated and it takes time.

When all document data are searched,
When a large number of relevant parts exist for a given search keyword, these are displayed in a list on the display unit, but the display order is not weighted by the search frequency or the like. In such a case, there is no choice but to properly select the required portion from the many relevant portions by the database user himself / herself.

Therefore, an object of the present invention is to provide a database search system capable of quickly searching for document data containing a keyword by inputting the keyword once without repeatedly selecting different search methods. .

[0008]

The structure of the first invention is as follows. A plurality of document data 4, an index dictionary 2 in which index information including a keyword extracted in advance from these document data 4 and position information in the document data 4 of this keyword is registered, and a keyword and document data 4 of this keyword The database C having the link dictionary 3 in which the link information with the description position is registered, the search means 1 for searching the keyword in the order of the index dictionary 2, the link dictionary 3, and the document data 4 by inputting the keyword, and this search. When the relevant keyword is found in the index dictionary 2 by the means 1, the relevant part in the document data 4 is read by the position information, and when the relevant keyword is found in the link dictionary 3, the link information is obtained. To read the corresponding part in the document data 4,
When the relevant keyword is found in the document data 4, the reading means 1 for reading the relevant portion from the relevant document data 4
And display means 7 for displaying the content including the read keyword on the display unit 5.

The configuration of the second invention is as follows. A plurality of document data 4, an index dictionary 2 in which index information including a keyword extracted in advance from these document data 4 and position information in the document data 4 of this keyword is registered, and a keyword and document data 4 of this keyword The database C having the link dictionary 3 in which the link information with the description position is registered, the storage unit 8 in which the search history dictionary 8a for registering the keyword and the position information or the link information in association with each other are stored, and the keyword is input to perform the search. Retrieval means 1 and 10 for retrieving the keyword in the order of the history dictionary 8a, the index dictionary 2, the link dictionary 3, and the document data 4, and the keyword and position information or link information retrieved by the retrieval means 1 and 10. Update registration means 7 for updating and registering the search history dictionary 8a with the highest rank, When the corresponding keyword is searched out by the index dictionary within 2 by 1 reads the relevant sections in the document data 4 by the location information, link dictionary 3
When the relevant keyword is searched for in the document data, the relevant part in the document data 4 is read by the link information, and when the relevant keyword is searched in the document data 4, the relevant part is read from the document data 4 It has means 1 and display means 7 for displaying the contents including the read keyword on the display unit 5.

[0010]

The operation of the first invention is as follows. When a keyword is entered, index dictionary, link dictionary,
Search in the order of document data. By this search, first, when the corresponding keyword is searched in the index dictionary, the corresponding part in the document data is read by the position information, and when the corresponding keyword is searched in the link dictionary, the above link is performed. The relevant part in the document data is read according to the information. Finally, when the relevant keyword is found in the document data, the relevant part is read from the relevant document data 4. Then, the content of the document data including the read keyword is displayed on the display unit.

The operation of the second invention is as follows. When a keyword is input, the search history dictionary, index dictionary, link dictionary, and document data are searched in this order. By this search, first, when the corresponding keyword is searched in the index dictionary, the corresponding part in the document data is read by the position information, and when the corresponding keyword is searched in the link dictionary, the above link is performed. The relevant part in the document data is read according to the information. Finally, when the relevant keyword is found in the document data, the relevant part is read from the relevant document data 4. Then, the content of the document data including the read keyword is displayed on the display unit.

Further, when a keyword is searched for, the keyword and position information or link information is updated and registered in the search history dictionary with the search order being the highest.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the drawings. The database search system of the present invention comprises a server A and a plurality of terminal devices B connected thereto. Note that FIG. 1 shows that only one terminal device B is connected to the server A.

As shown in FIG. 2, the server A comprises a database C in which an index dictionary 2, a link dictionary 3 and a plurality of document data 4 are stored, and a search mechanism section 1.

The index dictionary 2 has a content in which index information, which is a keyword previously extracted from the document data 4 and position information of the keyword in the document data 4, is registered. The position information includes a document data name including the input keyword, page position data indicating on which page of the document data, line position data indicating on which line of the page, and the like.

The link dictionary 3 stores hyperlink information between each node of a keyword and document data, in other words, link information between a keyword and a description position of this keyword in document data.

The search mechanism unit 1 searches the keywords sent from the search management mechanism unit 10 described later in the order of the index dictionary 2, the link dictionary 3, and the document data 4, and the index dictionary 2 by this search unit. When the relevant keyword is searched for in the link dictionary 3, the relevant portion in the document data 4 is read out according to the position information.
When the relevant keyword is searched for in the document data, the relevant part in the document data 4 is read by the link information. When the relevant keyword is searched in the document data 4, the relevant part is read from the document data 4. , A function as a reading means for sending the position information or link information corresponding to the retrieved keyword and the contents of the relevant portion to the search management mechanism unit 10.

The content of the relevant part is, for example, the description content of two lines before and after the line in which the keyword is described, the entire description content of the page in which the keyword is described, and the like.

The terminal device B includes a display unit 5 such as a CRT, a console 6 including a keyboard, a display mechanism unit 7 for controlling the display unit 5, and a dictionary storage unit including a hard disk storing a search history dictionary 8a. 8, a dictionary management mechanism unit 9, and a search management mechanism unit 10.

The search history dictionary 8a is a dictionary in which a keyword used in a search in the past is associated with position information or link information of the keyword.

The search management mechanism section 10 has the following functions. (1) A keyword is searched from the search history dictionary 8a, and if the keyword can be found, the position information or link information registered corresponding to this keyword is sent to the search mechanism unit 1 of the server A, and the keyword is searched. A function as a search means for sending the keyword to the search mechanism unit 1 if the search is not possible.

(2) Database C by the search mechanism unit 1
A function of sending the position information or link information read from the dictionary management mechanism unit 9 to the dictionary management mechanism unit 9 and sending update instruction information of the search history dictionary 8a to the dictionary management mechanism unit 9.

The dictionary management mechanism unit 9 includes a search management mechanism unit 10.
Based on the update instruction information sent from, the search order of the searched keyword and position information or link information is updated to the highest rank and registered, and when the position information or link information is read from the database C, It has a function as an update registration means for registering in the search history dictionary 8a together with the keyword.

The display mechanism section 7 has a function as a display means for displaying the content of the document data sent from the search management mechanism section 10 on the display section 5.

Next, the operation of the database search system having the above configuration will be described with reference to FIGS. Step 1 (abbreviated as S1 in the figure. The same applies hereinafter): The user inputs a keyword from the terminal device B and makes a search request. The input keyword is sent to the search management mechanism unit 10 via the display mechanism unit 7.

Step 2: The search management mechanism section 10 searches for a keyword from the search history dictionary 8a. Here, if the keyword can be found, the process proceeds to step 3, and if the keyword cannot be found, the process proceeds to step 6.

Step 3: Search history dictionary 8a with the search order of the keyword and position information or link information as the highest
Is updated and registered, and the searched keyword and position information or link information are sent to the search mechanism unit 1.

Step 4: The retrieval mechanism unit 1 reads out the contents including the keyword of the relevant portion from the document data 4 based on the transmitted position information and the like, and transmits the contents to the retrieval management mechanism unit 10.

Step 5: The search management mechanism unit 10 sends the contents including the sent keywords to the display mechanism unit 7,
The contents of the document data are displayed on the display unit 5 via the display mechanism unit 7.
Is displayed in.

Step 6: The search management mechanism unit 10 sends the keyword to the search mechanism unit 1. Step 7: The search mechanism unit 1 searches the index dictionary 2 in the database C, and if the keyword can be found, the process proceeds to step 3, and if not, the process proceeds to step 8.

Step 8: The search mechanism unit 1 searches the link dictionary 3, and if there is corresponding link information, the process proceeds to step 3, and if the link information cannot be retrieved, the process proceeds to step 9.

Step 9: The search mechanism unit 1 searches the document data 4 for the entire text, and if the keyword can be found, the process proceeds to Step 10. If the keyword cannot be found, the process proceeds to step 11.

Step 10: A list of contents including the above keywords is created and displayed on the display section 5 via the display mechanism section 7. As a list of the contents of the document data, in addition to the description contents of two lines before and after centering on the line in which the keyword is described, for example, when the document data is divided into a plurality of chapters, The title or paragraph may be the first sentence extracted.

Step 11: Display on the display unit 5 that the keyword is not found.

The present invention is not limited to the above-mentioned embodiments, but various modifications can be made within the scope of the invention.

In the above embodiment, the keyword is searched in the order of the search history dictionary, the index dictionary, the link dictionary, and the document data, and when the keyword is found, the contents including the keyword are displayed on the display unit. However, you may do as follows.

The keywords are searched in the order of the search history dictionary, the index dictionary, the link dictionary, and the document data. Even when the keyword is searched before searching the document data, the search operation is continued up to the document data. .

When the keyword is found in each of the index dictionary, the link dictionary, and the document data at the time when the search of the document data is completed, the contents specified by the position information or the like are used as index information with a high search frequency. It is preferable that the link information and the document data are arranged in this order, and that they are displayed so that they can be selected with a keyboard or a pointing device.

When the desired document data is selected from the above list, the search history dictionary 8a is updated and registered with the keyword and position information or link information corresponding to the content of the document data as the highest search order.

[0040]

According to the invention described in claim 1, if a keyword is input only once without repeatedly selecting a different search method, the index dictionary, the link dictionary, and the document data are searched in order of good search efficiency. Since this is performed, the document data including the keyword can be searched for in a short time, and the content of the document data can be quickly displayed.

In the invention described in claim 2, if the keyword is input only once without repeatedly selecting a different search method, the keyword used in the past search and the search history storing the position information or link information of the keyword are stored. Since the search is performed in the order of the dictionary, the index dictionary, the link dictionary, and the document data, that is, the order in which the first dictionary in which the relevant keyword is searched is used in order of efficiency of search, the document data including the keyword can be searched in a short time. , The contents of the document data can be displayed quickly.

Further, each time the search is repeated, the search history dictionary is updated and registered so that the one with the higher search frequency is read first, so that the keyword with the higher search frequency can be searched in a shorter time. .

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a database search system of the present invention.

FIG. 2 is a conceptual diagram showing stored contents of the database.

FIG. 3 is a block diagram showing the flow of data among the display mechanism unit, the search management mechanism unit, and the search mechanism unit of the database search system of the present invention.

FIG. 4 is a flowchart showing the overall operation of the database search system of the present invention.

[Explanation of symbols]

 2 index dictionary 3 link dictionary 4 document data C database 1 search mechanism section (search means, read means) 7 display means 9 update registration means 10 search management mechanism section (search means)

Claims (2)

[Claims] 1. A plurality of document data, an index dictionary in which index information consisting of keywords extracted in advance from these document data and position information in the document data of this keyword is registered, and a keyword and document data of this keyword in the document data. A database having a link dictionary in which the link information with the description position is registered, a search means for searching the keyword in the order of the index dictionary, the link dictionary, and the document data by inputting the keyword, and the index dictionary by the search means. When the relevant keyword is found, the corresponding location in the document data is read by the position information, and when the relevant keyword is found in the link dictionary, the relevant location in the document data is read by the link information, When the relevant keyword is found in the document data, A database search system comprising: a reading unit that reads a relevant portion from document data; and a display unit that displays the content including the read keyword on a display unit. 2. An index dictionary in which a plurality of pieces of document data, keywords extracted in advance from these pieces of document data, and index information consisting of position information in the document data of the keywords are registered as a dictionary, and the keywords and the document data of the keywords. The database that stores the link dictionary in which the link information with the description position of is registered as a dictionary, the storage unit that stores the search history dictionary that registers the keyword and the position information or the link information in association with each other, and by inputting the keyword, Search history dictionary, index dictionary, link dictionary, search means for searching the keyword in the order of document data, and search history dictionary with the keyword and position information or link information searched by this search means as the highest The update registration means for updating and registering the When the relevant keyword is found in the text dictionary, the relevant part in the document data is read by the above position information, and when the relevant keyword is found in the link dictionary, the corresponding information in the document data is obtained by the link information. It is characterized in that it has a reading means for reading the location and reading the relevant location from the document data when the relevant keyword is found in the document data, and a display means for displaying the content including the read keyword on the display unit. And database search system.