Title:
形態素列変換装置、形態素変換学習装置とそれらの方法とプログラム
Document Type and Number:
Japanese Patent JP5553779
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a morpheme string conversion apparatus which converts a certain morpheme string into a morpheme string of a different part-of-speech scheme without using two morpheme analysis systems of different morpheme schemes.SOLUTION: A morpheme string conversion apparatus includes a phrase table, an unknown word table, a parameter table, a lattice structure construction unit, a maximum likelihood phrase couple string search unit and an output morpheme string creation unit. The lattice structure construction unit refers to the phrase table and the unknown word table for a conversion source morpheme string, acquires a phrase couple corresponding to an input morpheme string and constructs a phrase lattice structure. The maximum likelihood phrase couple string search unit refers to the parameter table to search for a maximum likelihood phrase couple string of a phrase lattice. The output morpheme string creation unit then extracts and outputs a conversion destination morpheme from the maximum likelihood phrase couple string, thereby converting the conversion source morpheme string into the conversion destination morpheme string without using a morpheme analyzer.
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Inventors:
Kenji Imamura
Spring Tomoko
Sadamitsu September
Kuniko Saito
Spring Tomoko
Sadamitsu September
Kuniko Saito
Application Number:
JP2011002940A
Publication Date:
July 16, 2014
Filing Date:
January 11, 2011
Export Citation:
Assignee:
Nippon Telegraph and Telephone CORP.
International Classes:
G06F17/27
Attorney, Agent or Firm:
Naoki Nakao
Yukio Nakamura
Munehiro Yoshimura
Takashi Kusano
Yukio Nakamura
Munehiro Yoshimura
Takashi Kusano