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A Modular Incremental Model for English Full Parsing
Authors:Li Sheng  Zhao Tiejun  Zhang Jing
Affiliation:The Machine Translation Laboratory, School of Computer Science and Engineering,Harbin Institute of Technology, Harbin 150001, P.R.China;The Machine Translation Laboratory, School of Computer Science and Engineering,Harbin Institute of Technology, Harbin 150001, P.R.China;The Machine Translation Laboratory, School of Computer Science and Engineering,Harbin Institute of Technology, Harbin 150001, P.R.China;The Machine Translation Laboratory, School of Computer Science and Engineering,Harbin Institute of Technology, Harbin 150001, P.R.China
Abstract:In this paper, we present a modular incremental statistical model for English full parsing. Unlike other full parsing approaches in which the analysis of the sentence is a uniform process, our model separates the full parsing into shallow parsing and sentence skeleton parsing. In shallow parsing, we finish POS tagging, Base NP identification, prepositional phrase attachment and subordinate clause identification. In skeleton parsing, we use a layered feature-oriented statistical method. Modularity possesses the advantage of solving different problems in parsing with corresponding mechanisms. Feature-oriented rule is able to express the complex lingual phenomena at the key point if needed. Evaluated on Penn Treebank corpus, we obtained 89.2% precision and 89.8% recall.
Keywords:incremental statistical model   shallow parsing   skeleton parsing   feature-oriented rule
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