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        <title>A General Framework to Weight Heterogeneous Parallel Data for Model Adaptation in Statistical MT</title>
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    <abstract>The standard procedure to train the translation model of a phrase-based SMT system is to concatenate all available parallel data, to perform word alignment, to extract phrase pairs and to calculate translation probabilities by simple relative frequency. However, parallel data is quite inhomogeneous in many practical applications with respect to several factors like data source, alignment quality, appropriateness to the task, etc. We propose a general framework to take into account these factors during the calculation of the phrase-table, e.g. by better distributing the probability mass of the individual phrase pairs. No additional feature functions are needed. We report results on two well-known tasks: the IWSLT‘11 and WMT‘11 evaluations, in both conditions translating from English to French. We give detailed results for different functions to weight the bitexts. Our best systems improve a strong baseline by up to one BLEU point without any impact on the computational complexity during training or decoding.</abstract>
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%0 Conference Proceedings
%T A General Framework to Weight Heterogeneous Parallel Data for Model Adaptation in Statistical MT
%A Shah, Kashif
%A Barrault, Loïc
%A Schwenk, Holger
%S Proceedings of the 10th Conference of the Association for Machine Translation in the Americas: Research Papers
%D 2012
%8 oct 28 nov 1
%I Association for Machine Translation in the Americas
%C San Diego, California, USA
%F shah-etal-2012-general
%X The standard procedure to train the translation model of a phrase-based SMT system is to concatenate all available parallel data, to perform word alignment, to extract phrase pairs and to calculate translation probabilities by simple relative frequency. However, parallel data is quite inhomogeneous in many practical applications with respect to several factors like data source, alignment quality, appropriateness to the task, etc. We propose a general framework to take into account these factors during the calculation of the phrase-table, e.g. by better distributing the probability mass of the individual phrase pairs. No additional feature functions are needed. We report results on two well-known tasks: the IWSLT‘11 and WMT‘11 evaluations, in both conditions translating from English to French. We give detailed results for different functions to weight the bitexts. Our best systems improve a strong baseline by up to one BLEU point without any impact on the computational complexity during training or decoding.
%U https://aclanthology.org/2012.amta-papers.21/

Markdown (Informal)

[A General Framework to Weight Heterogeneous Parallel Data for Model Adaptation in Statistical MT](https://aclanthology.org/2012.amta-papers.21/) (Shah et al., AMTA 2012)

• A General Framework to Weight Heterogeneous Parallel Data for Model Adaptation in Statistical MT (Shah et al., AMTA 2012)

ACL

• Kashif Shah, Loïc Barrault, and Holger Schwenk. 2012. A General Framework to Weight Heterogeneous Parallel Data for Model Adaptation in Statistical MT. In Proceedings of the 10th Conference of the Association for Machine Translation in the Americas: Research Papers, San Diego, California, USA. Association for Machine Translation in the Americas.