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1. (WO2017038996) WORD ALIGNMENT MODEL CONSTRUCTION APPARATUS, MACHINE TRANSLATION APPARATUS, WORD ALIGNMENT MODEL PRODUCTION METHOD, AND RECORDING MEDIUM

Pub. No.:    WO/2017/038996    International Application No.:    PCT/JP2016/075886
Publication Date: Fri Mar 10 00:59:59 CET 2017 International Filing Date: Sat Sep 03 01:59:59 CEST 2016
IPC: G06F 17/28
Applicants: NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGY
国立研究開発法人情報通信研究機構
Inventors: UCHIYAMA, Masao
内山 将夫
Title: WORD ALIGNMENT MODEL CONSTRUCTION APPARATUS, MACHINE TRANSLATION APPARATUS, WORD ALIGNMENT MODEL PRODUCTION METHOD, AND RECORDING MEDIUM
Abstract:
[Problem] It has hitherto been impossible to accurately perform word alignment of a small-size parallel text corpus. [Solution] This word alignment model construction apparatus is provided with: a probability information calculation unit that, for each word pair included in a parallel text sentence included in small-size parallel text data, repeats a loop twice or more for one word pair to calculate first correspondence probability information that forms a pair with the one word pair, by using an initial value or the first correspondence probability information calculated in a previous loop, second correspondence probability information that forms a pair with one word pair included in a large-size word alignment model, and parallel text sentence word position probability information corresponding to one word pair in a parallel text sentence; and a correspondence probability information accumulation unit that accumulates, in association with each word pair, the first correspondence probability information calculated finally by the probability information calculation unit, in a small-size word alignment model storage unit. Thus, word alignment of the small-size parallel text corpus can be accurately performed.