DocumentCode :
2910499
Title :
An Orientation Model for Hierarchical Phrase-Based Translation
Author :
Xiao, Xinyan ; Su, Jinsong ; Liu, Yang ; Liu, Qun ; Lin, Shouxun
Author_Institution :
Key Lab. of Intell. Inf. Process., Inst. of Comput. Technol., Beijing, China
fYear :
2011
fDate :
15-17 Nov. 2011
Firstpage :
165
Lastpage :
168
Abstract :
The hierarchical phrase-based (HPB) translation exploits the power of grammar to perform long distance reorderings, without specifying nonterminal orientations against adjacent blocks or considering the lexical information covered by nonterminals. In this paper, we borrow from phrase-based system the idea of orientation model to enhance the reordering ability of HPB translation. We distinguish three orientations (monotone, swap, discontinuous) of a nonterminal based on the alignment of grammar, and select the appropriate orientation of nonterminal using lexical information covered by it. By incorporating the orientation model, our approach significantly outperforms a standard HPB system up to 1.02 Bleu on large scale NIST Chinese-English translation task, and 0.51 Bleu on WMT German-English translation task.
Keywords :
grammars; language translation; natural language processing; 0.51 Bleu; 1.02 Bleu; NIST Chinese-English translation task; WMT German-English translation task; hierarchical phrase-based translation; lexical information; nonterminal orientations; orientation model; phrase-based system; reordering ability; Entropy; Equations; Frequency estimation; Grammar; Mathematical model; Probability; Training;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Asian Language Processing (IALP), 2011 International Conference on
Conference_Location :
Penang
Print_ISBN :
978-1-4577-1733-8
Type :
conf
DOI :
10.1109/IALP.2011.43
Filename :
6121494
Link To Document :
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