| 摘要 |
PROBLEM TO BE SOLVED: To precisely search a tag set or tag for retrieval key for extracting a specific data type of data value from a Web page, from the Web page based on such a specific data type of data value. SOLUTION: An information extraction object Web page is retrieved, and a tag set surrounding an input data value is extracted, and a tag set for retrieval key is prepared based on the tag set (S102), and the tag set in the information extraction object Web page is collated with a tag set for retrieval key, and the number of tag sets whose sections other than the input data value are matched with the tag set for retrieval is counted (S103), and the adaptability of the tag set for retrieval key is decided based on the counted value and the number of the data groups in the information extraction object Web page (S106), and a new tag set for retrieval key corresponding to the decision result is prepared (S107). COPYRIGHT: (C)2006,JPO&NCIPI
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