International Workshop on Spoken Language Translation (IWSLT) 2010

Paris, France
December 2-3, 2010

The INESC-ID Machine Translation System for the IWSLT 2010

Wang Ling, Tiago Luís, João Graça, Luísa Coheur, Isabel Trancoso

L2F Spoken Language Systems Lab, INESC-ID, Lisboa, Portugal

In this paper we describe the Instituto de Engenharia de Sistemas e Computadores Investigac¸ ˜ao e Desenvolvimento (INESC-ID) system that participated in the IWSLT 2010 evaluation campaign. Our main goal for this evaluation was to employ several state-of-the-art methods applied to phrase-based machine translation in order to improve the translation quality. Aside from the IBM M4 alignment model, two constrained alignment models were tested, which produced better overall results. These results were further improved by using weighted alignment matrixes during phrase extraction, rather than the single best alignment. Finally, we tested several filters that ruled out phrase pairs based on puntuation. Our system was evaluated on the BTEC and DIALOG tasks, having achieved a better overall ranking in the DIALOG task.

Full Paper

Bibliographic reference.  Ling, Wang / Luís, Tiago / Graça, João / Coheur, Luísa / Trancoso, Isabel (2010): "The INESC-ID machine translation system for the IWSLT 2010", In IWSLT-2010, 81-84.