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1
Incremental Syntactic Language Models for Phrase-Based Translation
Schwartz, Lane
;
Callison-Burch, Chris
;
Schuler, William
;
Wu, Stephen
In: DTIC (2011)
Abstract:
This paper describes a novel technique for incorporating syntactic knowledge into phrase-based machine translation through incremental syntactic parsing. Bottom-up and top-down parsers typically require a completed string as input. This requirement makes it difficult to incorporate them into phrase-based translation, which generates partial hypothesized translations from left-to-right. Incremental syntactic language models score sentences in a similar left-to-right fashion, and are therefore a good mechanism for incorporating syntax into phrase-based translation. We give a formal definition of one such linear-time syntactic language model, detail its relation to phrase-based decoding, and integrate the model with the Moses phrase-based translation system. We present empirical results on a constrained Urdu-English translation task that demonstrate a significant BLEU score improvement and a large decrease in perplexity. ; Presented at the Annual Meeting of the Association for Computational Linguistics (49th) held in Portland, Oregon, on June 19-24, 2011. Published in the Proceedings of the 49th Annual Meeting of the Association for Computational Linguistics, p620-631, June 2011. Sponsored in part by the National Science Foundation.
Keyword:
*INCREMENTAL SYNTACTIC PARSING
;
*LEARNING MACHINES
;
*MACHINE TRANSLATION
;
*MARKOV PROCESSES
;
*PARSERS
;
*PHRASE-BASED MACHINE TRANSLATION
;
*STATISTICAL ANALYSIS
;
*STATISTICAL MACHINE TRANSLATION
;
*SYNTAX
;
CONTEXT FREE GRAMMARS
;
Cybernetics
;
DECODING
;
ENGLISH LANGUAGE
;
GRAMMATICAL CORRECTNESS
;
GRAPHS
;
HIERARCHICAL HIDDEN MARKOV MODELS
;
HIERARCHIES
;
INCREMENTAL PARSERS
;
INCREMENTAL SYNTACTIC LANGUAGE MODELS
;
Linguistics
;
PCFG(PROBABILISTIC CONTEXT-FREE GRAMMAR)
;
Statistics and Probability
;
SYMPOSIA
;
URDU LANGUAGE
;
WORDS(LANGUAGE)
URL:
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA558560
http://www.dtic.mil/docs/citations/ADA558560
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