| 摘要 |
<P>PROBLEM TO BE SOLVED: To achieve extraction of synonym pairs with high accuracy when each word pair consisting of a parenthetic word and a word immediately preceding it in a Japanese document is determined to be a word pair. <P>SOLUTION: In a synonym pair extraction device 1, a morphological analysis part 12 performs morphological analysis, and a proper expression analysis part 14 performs proper expression analysis based on the result of the morphological analysis, extracts words with proper expressions, and categorizes the words as proper expressions. Next, a synonym pair candidate extracting process part 15 determines whether or not there exists any pair of a parenthetic compound noun and a compound noun immediately preceding it. If there exists a pair of such compound nouns, the pair is stored in a synonym pair candidate storage part 16 as a candidate of a synonym pair. A synonym determining process part 17 obtains the candidate stored in the synonym pair candidate storage part 16 and verifies whether or not the synonyms in the candidate are of the same category of proper noun; if they are of the same category, the candidate is outputted to a synonym pair storage part 18 as a synonym pair. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
