International Workshop on Spoken Language Translation (IWSLT) 2006
Keihanna Science City, Kyoto, Japan
We present the NTT translation system that is experimented for the evaluation campaign of International Workshop on Spoken Language Translation (IWSLT). The system consists of two primary components: a hierarchical phrase-based statistical machine translation system and a reranking system. The former is conceptualized as a synchronous-CFG in which phrases are hierarchically combined using nonterminals. The latter uses a modified voted perceptron approach with large number of features. Experiments showed that our hierarchical phrase-based model outperformed a conventional phrase-based model. In addition, our reranking algorithm further boosted the performance.
Full Paper Presentation
Bibliographic reference. Watanabe, Taro / Suzuki, Jun / Tsukada, Hajime / Isozaki, Hideki (2006): "NTT statistical machine translation for IWSLT 2006", In IWSLT-2006, 95-102.