On the one hand, in previous work (Carpuat and Wu, 2005b) we obtained disappointing results when using the predictions of a Senseval WSD system in conjunction with a standard word-based SMT system: we reported slightly lower BLEU scores despite trying to incorporate WSD using a number of apparently sensible methods.
our WSD-based lexical choice models are designed to directly model the lexical choice in the actual translation direction, and take full advantage of not residing strictly within the Bayesian sourcechannel model in order to benefit from the much richer Senseval-style feature set this facilitates.