Relabeling syntax trees to improve syntax-based machine translation quality

Authors:
Bryant Huang;Kevin Knight
Affiliations:
Language Weaver, Inc., Marina del Rey, CA;University of Southern California, Marina del Rey, CA
Venue:
HLT-NAACL '06 Proceedings of the main conference on Human Language Technology Conference of the North American Chapter of the Association of Computational Linguistics
Year:
2006

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Abstract

We identify problems with the Penn Tree-bank that render it imperfect for syntax-based machine translation and propose methods of relabeling the syntax trees to improve translation quality. We develop a system incorporating a handful of relabeling strategies that yields a statistically significant improvement of 2.3 BLEU points over a baseline syntax-based system.