| 摘要 |
PROBLEM TO BE SOLVED: To provide a conceptual search method which improves search accuracy compared with a conventional conceptual search by performing a more accurate search based on information necessary for a user, since in a conceptual search, the search is carried out without deciding whether the information included in documents is necessary information for a user, there are cases that search accuracy may deteriorate, if the conceptual search is performed for huge documents, and that although decision of necessity and propriety of information included in the document is made by a feature term, the discrimination may be difficult. SOLUTION: A keyword which becomes a feature of a document is extracted from the document is inputted as a search condition. The keyword used as the feature and individual sentences obtained by breaking down a document are classified into an equivalence class, matched and held. A sentence representing a sentence group in each classified equivalence class is shown as an important sentence, and is made to be choosen. The conceptual search processing is carried out by the use of a keyword group matched with the equivalence class shown by the important sentence and its weight. COPYRIGHT: (C)2005,JPO&NCIPI
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