Paper: Generalizing Tree Transformations for Inductive Dependency Parsing

ACL ID P07-1122
Title Generalizing Tree Transformations for Inductive Dependency Parsing
Venue Annual Meeting of the Association of Computational Linguistics
Session Main Conference
Year 2007
Authors

Previous studies in data-driven dependency parsinghaveshownthattreetransformations can improve parsing accuracy for specific parsers and data sets. We investigate to what extent this can be generalized across languages/treebanks and parsers, focusing on pseudo-projective parsing, as a way of capturing non-projective dependencies, and transformations used to facilitate parsing of coordinate structures and verb groups. The results indicate that the beneficial effect of pseudo-projective parsing is independent of parsing strategy but sensitive to language or treebankspecificproperties. Bycontrast, the construction specific transformations appear to be more sensitive to parsing strategy but have a constant positive effect over several languages.