| 摘要 |
PROBLEM TO BE SOLVED: To provide an information filtering device for narrowing and providing only information required by a user to the user by setting a document generated and corrected irregularly to be an object. SOLUTION: In this device, similarity between a retrieving condition registered in a profile 161 in advance and information included in a document to be a processing object is calculated by a similarity calculating part 16, and a prescribed document is selected from among a plurality of documents according to the calculated similarity. A new information determination part 12 determines whether each document includes new information or not while tracing depth of a hierarchy only in a range of the hierarchy monitoring generation of preset new information. Then the similarity calculating part 16 calculates similarity to the document which is determined to be new information by the new information determination part 12 for each information unit included in the document. COPYRIGHT: (C)2005,JPO&NCIPI
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