acl acl2012 acl2012-118 acl2012-118-reference knowledge-graph by maker-knowledge-mining

118 acl-2012-Improving the IBM Alignment Models Using Variational Bayes


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Author: Darcey Riley ; Daniel Gildea

Abstract: Bayesian approaches have been shown to reduce the amount of overfitting that occurs when running the EM algorithm, by placing prior probabilities on the model parameters. We apply one such Bayesian technique, variational Bayes, to the IBM models of word alignment for statistical machine translation. We show that using variational Bayes improves the performance of the widely used GIZA++ software, as well as improving the overall performance of the Moses machine translation system in terms of BLEU score.


reference text

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