| 摘要 |
PROBLEM TO BE SOLVED: To improve retrieval precision by facilitating the extraction of a characteristic term used for retrieval and tuning the characteristic term. SOLUTION: This system has an user interface for supporting the seed document formation by a user by use of a thesaurus in the first retrieval, and displaying a newly extracted characteristic term to the user on and after the second retrieval so that the seed document can be adjusted to enhance the retrieval precision. COPYRIGHT: (C)2004,JPO
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