The Challenges of Parsing Chinese with Combinatory Categorial Grammar
Daniel W. K. Tse, James Curran · 2012
We apply Combinatory Categorial Grammar to wide-coverage parsing in Chinese with the new Chinese CCGbank, bringing a formalism capable of transparently recovering non-local dependencies to a language in which they are particularly frequent. We train two state-of-the-art English parsers: the parser of Petrov and Klein (P&K), and the Clark and Curran (C&C) parser, uncov-ering a surprising performance gap between them not observed in English — 72.73 (P&K) and 67.09 (C&C) F-score on 6. We explore the challenges of Chinese parsing through three novel ideas: develop-ing corpus variants rather than treating the cor-pus as fixed; controlling noun/verb and other ambiguities; and quantifying the impact of constructions like pro-drop. 1