Chinese parsing model based on Constraint Dependency Grammar

Constraint Dependency Grammar (CDG) is a formalism representing grammatical rules as constraints on dependency relations. It reduces the structural ambiguity via constraint-propagation without generating individual parse trees. In this paper, we propose a high quality parsing model for Chinese, which defines the phrase molecule lexicalizing the CDG at the word-level. Ternary constraints are used to improve the accuracy and efficiency of parsing.