Machine Translation Using Constraint-Based Synchronous Grammar  

作　　者：黄辉 董名垂 胡东成 

机构地区：[1]Department of Automation, Tsinghua University, Beijing 100084, China

出　　处：《Tsinghua Science and Technology》2006年第3期295-306,共12页清华大学学报（自然科学版（英文版）

基　　金：SupportedbytheCenterofScientificandTechnologicalResearchofUniversityofMacao(CATIVO:3678)

摘　　要：A synchronous grammar based on the formalism of context-free grammar was developed by generalizing the first component of production that models the source text. Unlike other synchronous grammars, the grammar allows multiple target productions to be associated to a single production rule which can be used to guide a parser to infer different possible translational equivalences for a recognized input string according to the feature constraints of symbols in the pattern. An extended generalized LR algorithm was adapted to the parsing of the proposed formalism to analyze the syntactic structure of a language. The grammar was used as the basis for building a machine translation system for Portuguese to Chinese translation. The empirical results show that the grammar is more expressive when modeling the translational equivalences of parallel texts for machine translation and grammar rewriting applications.A synchronous grammar based on the formalism of context-free grammar was developed by generalizing the first component of production that models the source text. Unlike other synchronous grammars, the grammar allows multiple target productions to be associated to a single production rule which can be used to guide a parser to infer different possible translational equivalences for a recognized input string according to the feature constraints of symbols in the pattern. An extended generalized LR algorithm was adapted to the parsing of the proposed formalism to analyze the syntactic structure of a language. The grammar was used as the basis for building a machine translation system for Portuguese to Chinese translation. The empirical results show that the grammar is more expressive when modeling the translational equivalences of parallel texts for machine translation and grammar rewriting applications.

关 键 词：constraint-based synchronous grammar machine translation Portuguese to Chinese translation 

分 类 号：H085[语言文字—语言学]