| 摘要 |
PROBLEM TO BE SOLVED: To provide retrieval technology for outputting a proper amount of proper retrieval results in short time in performing document retrieval for a plurality of databases. SOLUTION: This information processor performs the document retrieval for the plurality of databases and has a means (111) for retrieving a document stored in an optional database among the plurality of databases, a means (108) for recording access information to documents stored in the plurality of databases, a means (112) for extracting a document in close access order to the document retrieved by the means (111) using the access information and calculating relevancy with the document retrieved by the means (111) based on the access order and a means (113) for outputting the document retrieved by the means (111) and the document whose relevancy is calculated by the means (112) as retrieval results. COPYRIGHT: (C)2006,JPO&NCIPI
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