Head-modifier Relation based Non-lexical Reordering Model for Phrase-Based Translation
Shui Liu, Sheng Li, Tiejun Zhao, Min Zhang, Pengyuan Liu · 2015
Phrase-based statistical MT (SMT) is a milestone in MT. However, the transla-tion model in the phrase based SMT is structure free which greatly limits its reordering capacity. To address this is-sue, we propose a non-lexical head-modifier based reordering model on word level by utilizing constituent based parse tree in source side. Our experi-mental results on the NIST Chinese-English benchmarking data show that, with a very small size model, our me-thod significantly outperforms the base-line by 1.48 % bleu score. 1