To enable to indicate retrieval result by a cluster easy to understand to a user.
The retrieval system acquires a plurality of related words relating to a retrieval word from a retrieval query log (102), performs meta-search corresponding to the retrieval word by a plurality of retrieval engines (104), extracts text data from retrieved Web pages (108), acquires a plurality of vocabularies morphological-analyzing the extracted text data (112), makes a vocabulary frequency matrix to a plurality of Web pages (116), and calculates the degree of similarity of related words attending to only related words (120). Then, the system performs clustering of related words based on the degree of similarity of calculated related words, generates related word clusters of prescribed number (122), performs weighting of the related word clusters based on retrieval number of the related words, sorts the related word cluster systematically (124), and indicates a list of the related word clusters as retrieval result (128).
COPYRIGHT: (C)2008,JPO&INPIT
Hideo Yokoo
Satoshi Uchiyama
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| JP11328221A |
Kato Kazunori
Katsuichi Nishimoto
Hiroshi Fukuda