| 摘要 |
PROBLEM TO BE SOLVED: To provide a document retrieval device that can retrieve a document fast. SOLUTION: The history of retrieval conditions for retrieving a document stored in a document storage part 12 is recorded and on the basis of the retrieval condition history information, the frequency of use of the document attribute used for retrieval is calculated. According to alteration conditions set by receiving notification information on the calculated use frequency of the document attribute, the structure of a document attribute table 13 is altered on the basis of the calculation result of an attribute use frequency calculating means 17. |
