Paper: Unlexicalised Hidden Variable Models of Split Dependency Grammars

ACL ID P08-2054
Title Unlexicalised Hidden Variable Models of Split Dependency Grammars
Venue Annual Meeting of the Association of Computational Linguistics
Session Main Conference
Year 2008
Authors

This paper investigates transforms of split dependency grammars into unlexicalised context-free grammars annotated with hidden symbols. Our best unlexicalised grammar achieves an accuracy of 88% on the Penn Treebank data set, that represents a 50% reduction in error over previously published results on unlexicalised dependency parsing.