中文CCG樹庫的構建

Combinatory Categorial Grammar（CCG） is a type-driven lexicalized grammar formalism with a transparent interface between syntax and semantics,which is essential to in-depth text processing.To apply CCG to real texts,however,a large scale lexicon needs to be constructed as indispensable support,demanding a great deal of manpower and resources.An effective way to alleviate this problem is to transform an existing treebank into a CCGbank.This paper presents an approach to deriving a Chinese CCGbank from Tsinghua Chinese Treebank,with the aid of a number of predefined verb sub-categorization and Chinese sentence patterns.The resulted CCGbank includes 32 737 sentences,of over 350k word tokens.The effectiveness of this approach is confirmed by an evaluation with manually annotated references and a comparison with reported works on the construction of several CCGbanks.