| 摘要 |
PROBLEM TO BE SOLVED: To provide a document search device, a document search method, and a recording medium capable of suppressing quality deterioration of document ranking regardless of the quality of search request. SOLUTION: From a document group stored in a document storage means such as a hard disk 4, a document where an initial search language group stored in a search language storage means such as a hard disk 4 appears, is ranking-searched to acquire a first ranking. An enlarged language group is generated from a document group included therein. A document where the initial search group and the enlarged language group appear is ranking-searched to acquire second ranking. A control part such as CPU 22 and a memory 3 which adjusts the first ranking and the second ranking to acquire a new third ranking is provided. COPYRIGHT: (C)2003,JPO
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