Literature search program literature retrieval device, and the literature search method

摘要

PPROBLEM TO BE SOLVED: To output, as information, document terms in document information, classifications document terms belong to, and score indicating the degree of importance of the document terms in order to perform narrow search of a large amount of search results. PSOLUTION: A document search part 110 accesses a document database 200 with an input query to acquire document information. A search result generation part 120 extracts document terms from the document information and generates classifications and scores of the document terms. Then, a search result display part 105 displays the extracted document terms, their classifications, and scores. The classification is based on a hierarchical structure indicating the document terms, and the lower the appearance frequency in all document information is and the higher the appearance frequency in hit document information is, the higher the score is. PCOPYRIGHT: (C)2010,JPO&INPIT