JPH01149127A - Information retrieving device - Google Patents

Abstract

PURPOSE:To eliminate unnecessary information as much as possible and to efficiently retrieve with high accuracy by rearranging, displaying and printing a retrieving result in a sequence high in adaptation and stopping the retrieving result low in the adaptation. CONSTITUTION:A user inputs a retrieving request from a retrieving input part 11. In an information retrieving part 12, a data base 20 is made access to retrieve the required information according to a collation to inputted data. A retrieving result editing part 13 compares the retrieving result with an input key word to apply the adaptation to the retrieving result and rearrange the retrieving result in the sequence high in the adaptation. In a retrieving result output part 14, according to the instruction of the retrieving result editing part 13, the retrieving result is displayed and printed in the sequence of the adaptation. When there are many adaptations, the number of the displays and printings is limited in the retrieving result editing part 13, thereby, the retrieving result can be obtained without losing effective information.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an information retrieval device, and more particularly to an information retrieval device that efficiently acquires necessary information from various databases using keyword logical formulas.

(Prior Art) A schematic configuration of a conventional information retrieval device is shown in FIG. 1. In FIG. 1, an information retrieval device 10 includes a search expression input section 11. It consists of an information search section 12 and a search result output section 14. Note that the search result output unit 14 is a display device or a printing device. The information retrieval device 10 is connected to various databases 20 at remote locations or built into the device.

When searching for necessary information from the database 20, the user enters a search request in the form of a keyword logical expression in the search input section 1.
Enter from 1. In the information search unit 12, the database 2
0 and searches for the necessary information by comparing the input keyword logical formula with the index words given to each article in the database. The search results are displayed or output as a hard copy by the search result output unit 14.

Note that when the information search unit 12 has a large number of matching items.

It may also have a function to limit the number of output items.

[Problem that the invention seeks to solve]

In conventional information retrieval devices of this type, the content of search results is
Because they are not arranged in an order that takes into account the degree to which they match the keyword specified by the user, if there are a large number of matches, important information may be placed at the end, or unnecessary information that was not expected may be placed at the beginning. There is also the possibility that the output results may be located at the same time, and it takes a lot of time to understand and judge all the output results, resulting in a problem of inefficiency. Further, even if a function to limit the number of output items is used, if an important article is located at the end of the page, there is a problem that one important article will not be output and will be buried.

SUMMARY OF THE INVENTION An object of the present invention is to provide an information retrieval device that solves the above-mentioned conventional problems and makes it possible to improve the accuracy and efficiency of information retrieval.

[Means for solving problems]

The present invention provides search results obtained from a database,
It is characterized by providing means for assigning degrees of relevance to keywords (search expressions) specified by the user and for rearranging the keywords in the order of their relevance.

[For production]

The database is accessed using the keyword specified by the user, and the search results are searched by matching with the index terms assigned to the database. Exact match/partial match status between keywords and index terms, keyword related words・
Match status between index terms.

Using the frequency of occurrence of keywords in the search results and the importance assigned to each index word that was matched, the degree of relevance of the content of the search results to the specified keyword logical formula is assigned, and the results are ranked in the order of the degree of relevance. Sort search results. This allows search results to be displayed in descending order of relevance.
It becomes possible to print, display search results with low relevance, and prevent important search results from being output and buried even if printing is stopped, achieving higher accuracy and efficiency in information retrieval.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic configuration diagram of an information retrieval device according to the present invention. In FIG. 1, an information search device 10 includes a search expression input unit 1
1, an information search section 12, a search result editing section 13, and a search result output section 14 such as a display device or a printing device. The database 20 is located at a remote location or is built into the information retrieval device 10.

When searching for necessary information (for example, articles, etc.) from the database 20, the user inputs a search request in the form of a keyword logical formula through the search formula input section 11. The information search unit 12 accesses the database 20 and searches for necessary information by comparing the input keyword logical formula with the index words assigned to each article in the database. The search result editing unit 13 compares the obtained search results with input keywords, assigns a degree of suitability to the search results, and rearranges the search results in the order of their suitability. Search result output unit 14
Then, the search results are displayed or printed in accordance with the instructions from the search result editing section 13.

Next, the processing of the search result editing section 13 will be described in detail.

The search result editing unit 13 calculates the degree of suitability shown below for each article in the search results by comparing the search results with the input keywords.

M1= f (Pk* PR# P□ Pp)i
=Each article in the search results.The meaning of each parameter is as follows.

Pk = Degree of match between input keywords and index terms (bibliographic information given to search result articles) (complete match or partial match) PR = Match in search using keyword-related words obtained from a thesaurus etc. Degree P, = Frequency P of keyword appearance in search results, = Importance of matched index term The above parameters will be explained in more detail.

When "r information search" is specified as a keyword.

(1) PkS When a search result including "information search" in the bibliographic information is obtained (exact match), a large value is assigned to Pk. Furthermore, when the bibliographic information includes "search" (partial match), a small value is given to Pk.

(2) If there is a match based on the related word "keyword" of "information search" obtained by PR Nizitouras, points will be added to the PR.

(3) P#: For articles in which "information search" appears n times in the search results and articles in which it appears m times (in S, n > m), a large value is given to P of the former search results.

(4) Pp: Give an importance value to each index term in the bibliographic information of the search results in advance (give a higher value to the index term that indicates the content of each article more). When the importance of "information retrieval" is high, a large value is given to P.

In addition, when entering search keywords, the weighting of each keyword can be entered by including information, so that the weighting information is used instead of the importance value listed in the bibliographic information of the search results, and the above PP value is used. Flexible methods of determining are also possible.

The search result editorial department 13 stores information about each article in the search results.
After the articles are rearranged in the order of the articles with the highest suitability Ml values obtained in the above manner, the detection result output unit 14 is instructed to display or print.

Note that when the number of matching items is large, the search result editing unit 13 limits the number of items to be displayed and printed, thereby making it possible to obtain search results without losing valid information.

〔Effect of the invention〕

As explained above, according to the present invention, by sorting search results in order of high relevance, displaying and printing them, and discontinuing search results with low relevance, it is possible to obtain necessary information, especially when the number of matches is large. This has the advantage of enabling highly accurate and efficient retrieval of information without losing information and eliminating as much unnecessary information as possible.

[Brief explanation of the drawing]

11th FI is a schematic configuration diagram of an information retrieval device of the present invention. FIG. 2 is a schematic configuration diagram of a conventional information retrieval device. 10... Information search device, 11... Search formula input unit,
12... Information search department, 13... Search result editing department,
14...Search result output unit, 20...Database. Figure 1 Figure 2

Claims (4)

[Claims] (1) An information retrieval device that searches a database stored in a remote location or an internal storage device and outputs the search results, including a search formula input means for inputting a subject to be searched in the form of a keyword logical formula; Information retrieval means for searching the database by matching the search formula with index terms assigned to the database; and editing for comparing the search results with the search formula, assigning degrees of relevance, and rearranging the results in the order of the degrees of relevance. 1. An information retrieval device comprising: a search result editing means for editing the search results; and a search result output means for outputting the edited search results. (2) The search result editing means records the complete match/partial match status between keywords/index terms, the match status between keyword related terms/index terms, the frequency of appearance of keywords in the search results, and the individual matched index terms. Claim 1, characterized in that the assigned importance level is used to assign the suitability of the content of the search results to the specified keyword logical expression, thereby rearranging the content in the order of the highest suitability. The information retrieval device described. (3) When inputting a keyword logical formula for a subject to be searched, by specifying and inputting a weighting for each keyword, the weighting is reflected in the calculation of the degree of suitability. The information retrieval device according to item 2. (4) When outputting search results, a threshold value of relevance is specified and output is limited to only those with high relevance among the search results to be output. The information retrieval device according to item 2 or 3.