Using linear interpolation and weighted reordering hypotheses in the moses system
Tipus de documentComunicació de congrés
Condicions d'accésAccés obert
This paper proposes to introduce a novel reordering model in the open-source Moses toolkit. The main idea is to provide weighted reordering hypotheses to the SMT decoder. These hypotheses are built using a first-step Ngram-based SMT translation from a source language into a third representation that is called reordered source language. Each hypothesis has its own weight provided by the Ngram-based decoder. This proposed reordering technique offers a better and more efficient translation when compared to both the distance-based and the lexicalized reordering. In addition to this reordering approach, this paper describes a domain adaptation technique which is based on a linear combination of an specific indomain and an extra out-domain translation models. Results for both approaches are reported in the Arabic-to-English 2008 IWSLT task. When implementing the weighted reordering hypotheses and the domain adaptation technique in the final translation system, translation results reach improvements up to 2.5 BLEU compared to a standard state-of-the-art Moses baseline system.
CitacióCosta-Jussà, M. R.; Fonollosa, José A. R. Using linear interpolation and weighted reordering hypotheses in the moses system. A: International Conference on Language Resources and Evaluation. "Seventh Conference on International Language Resources and Evaluation". Valletta: 2011, p. 1712-1718.
Versió de l'editorhttp://www.lrec-conf.org/proceedings/lrec2010/pdf/23_Paper.pdf