Context-dependent alignment models for Statistical Machine Translation (2009)
| Venue: | In Proceedings of Human Language Technologies: The 2009 Annual Conference of the North American Chapter of the Association for Computational Linguistics |
| Citations: | 4 - 1 self |
BibTeX
@INPROCEEDINGS{Brunning09context-dependentalignment,
author = {Jamie Brunning and Adrià De Gispert and William Byrne},
title = {Context-dependent alignment models for Statistical Machine Translation},
booktitle = {In Proceedings of Human Language Technologies: The 2009 Annual Conference of the North American Chapter of the Association for Computational Linguistics},
year = {2009},
pages = {110--118}
}
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Abstract
We introduce alignment models for Machine Translation that take into account the context of a source word when determining its translation. Since the use of these contexts alone causes data sparsity problems, we develop a decision tree algorithm for clustering the contexts based on optimisation of the EM auxiliary function. We show that our contextdependent models lead to an improvement in alignment quality, and an increase in translation quality when the alignments are used in Arabic-English and Chinese-English translation. 1
