| 摘要 |
PROBLEM TO BE SOLVED: To provide a text retrieval device, a text retrieval program, and a text retrieval method further reducing retrieval noise while minimizing an increase in the amount of retrieval processing or index capacity in a retrieval system using an N-gram (bi-gram) index. SOLUTION: The text retrieval device is provided with a retrieval object text section for analyzing a retrieval object text to extract a retrieval word, and a retrieval analysis section for analyzing the retrieval word to extract the word. Words are extracted using respectively different analysis rules to carry out index formation and text retrieval. COPYRIGHT: (C)2007,JPO&INPIT
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