| 摘要 |
PROBLEM TO BE SOLVED: To reliably search for an article of a field inputted by using a keyword by a multisense word. SOLUTION: The present invention comprises an input means 1 for inputting a keyword and a field, a data base 4 for storing an article of each field, and a search extraction means 3 for extracting an article that includes the inputted keyword and field from the database 4, extracting a word group A which appears in the extracted article group disproportionately, and outputting articles starting from the article containing many of the word group A out of the articles containing the inputted keyword. COPYRIGHT: (C)2007,JPO&INPIT
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