| 摘要 |
PROBLEM TO BE SOLVED: To provide a Japanese morpheme analyzer with which date expressions in a Japanese sentence can be collected as one token in morpheme analysis. SOLUTION: This Japanese morpheme analyzer is provided with an input part 1 for inputting a prescribed Japanese character string, dictionary group 2 storing vocabulary information required for analyzing the morpheme of the Japanese character string, dictionary retrieving part 3 for retrieving the dictionary group 2 in which the Japanese character string is made as a key, sentence dividing part 4 for dividing the Japanese character string while using the dictionary retrieving part 3, token certifying part 5 for certifying individual unit divided at the sentence dividing part 4 as a token and a date expression certifying part 7 for certifying the date expression by collating the pattern of a date expression extracted in advance with the certified result at the token certifying part 5. |
