Syntax-Based Translation With Bilingually Lexicalized Synchronous Tree Substitution Grammars

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	Syntax-Based Translation With Bilingually Lexicalized Synchronous Tree Substitution Grammars
	Zhang, Jiajun; Zhai, Feifei; Zong, Chengqing
刊名	IEEE TRANSACTIONS ON AUDIO SPEECH AND LANGUAGE PROCESSING
	2013-08-01
卷号	21 期号:8 页码:1586-1597
关键词	Bilingually lexicalized synchronous tree substitution grammars discriminative model generative model syntax-based statistical machine translation
英文摘要	Syntax-based models can significantly improve the translation performance due to their grammatical modeling on one or both language side(s). However, the translation rules such as the non-lexical rule "VP -> (x(0)x(1), VP : x(1)PP : x(0))" in string-to-tree models do not consider any lexicalized information on the source or target side. The rule is so generalized that any subtree rooted at VP can substitute for the nonterminal VP : x(1). Because rules containing nonterminals are frequently used when generating the target-side tree structures, there is a risk that rules of this type will potentially be severely misused in decoding due to a lack of lexicalization guidance. In this article, inspired by lexicalized PCFG, which is widely used in monolingual parsing, we propose to upgrade the STSG (synchronous tree substitution grammars)-based syntax translation model with bilingually lexicalized STSG. Using the string-to-tree translation model as a case study, we present generative and discriminative models to integrate lexicalized STSG into the translation model. Both small- and large-scale experiments on Chinese-to-English translation demonstrate that the proposed lexicalized STSG can provide superior rule selection in decoding and substantially improve the translation quality.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Acoustics ; Engineering, Electrical & Electronic
研究领域[WOS]	Acoustics ; Engineering
收录类别	SCI
语种	英语
WOS记录号	WOS:000318545200005
内容类型	期刊论文
源URL	[http://ir.ia.ac.cn/handle/173211/4123]
专题	自动化研究所_模式识别国家重点实验室_自然语言处理团队
作者单位	Chinese Acad Sci, Natl Lab Pattern Recognit, Inst Automat, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Jiajun,Zhai, Feifei,Zong, Chengqing. Syntax-Based Translation With Bilingually Lexicalized Synchronous Tree Substitution Grammars[J]. IEEE TRANSACTIONS ON AUDIO SPEECH AND LANGUAGE PROCESSING,2013,21(8):1586-1597.
APA	Zhang, Jiajun,Zhai, Feifei,&Zong, Chengqing.(2013).Syntax-Based Translation With Bilingually Lexicalized Synchronous Tree Substitution Grammars.IEEE TRANSACTIONS ON AUDIO SPEECH AND LANGUAGE PROCESSING,21(8),1586-1597.
MLA	Zhang, Jiajun,et al."Syntax-Based Translation With Bilingually Lexicalized Synchronous Tree Substitution Grammars".IEEE TRANSACTIONS ON AUDIO SPEECH AND LANGUAGE PROCESSING 21.8(2013):1586-1597.