Constituent Reordering and Syntax Models for English-to-Japanese Statistical Machine Translation

We present a constituent parsing-based reordering technique that improves the performance of the state-of-the-art English-to-Japanese phrase translation system that includes distortion models by 4.76 BLEU points. The phrase translation model with reordering applied at the pre-processing stage outperforms a syntax-based translation system that incorporates a phrase translation model, a hierarchical phrase-based translation model and a tree-to-string grammar. We also show that combining constituent reordering and the syntax model improves the translation quality by additional 0.84 BLEU points.

• Type: Journal
• Year: 2010
• Where: COLING
• Authors: Young-Suk Lee, Bing Zhao, Xiaoqian Luo
• Keywords: COLING 2010, Computational Linguistics, English-to-Japanese Phrase Translation, Phrase Translation, Phrase Translation Model