| 摘要 |
PROBLEM TO BE SOLVED: To analyze a search log of a user for each document group based on a feature rule showing a document group to be detected, to calculate each feature score, to detect a document group having a feature satisfying a condition based on the feature score, and to automatically detect a document group useful for the user based on behaviors of the user. SOLUTION: An information extracting means 12 analyzes the search log stored in a search log DB 11a, and specifies a document group to which an acquired document belongs. A feature counting means 13 analyzes the search log for each document group, and counts the feature scores according to a predetermined feature rule. A document group determining means 14, based on the result of counting the feature score, detects a document group having a feature satisfying a predetermined condition, and registers it as an information providing document group candidate. The detected information providing document group candidate is presented to a user by a document group presenting means 15. COPYRIGHT: (C)2010,JPO&INPIT
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