Paper: Enforcing Subcategorization Constraints in a Parser Using Sub-parses Recombining

ACL ID N13-1024
Title Enforcing Subcategorization Constraints in a Parser Using Sub-parses Recombining
Venue Annual Conference of the North American Chapter of the Association for Computational Linguistics
Session Main Conference
Year 2013
Authors

Treebanks are not large enough to adequately model subcategorization frames of predica- tive lexemes, which is an important source of lexico-syntactic constraints for parsing. As a consequence, parsers trained on such tree- banks usually make mistakes when selecting the arguments of predicative lexemes. In this paper, we propose an original way to correct subcategorization errors by combining sub- parses of a sentence S that appear in the list of the n-best parses of S. The subcatego- rization information comes from three differ- ent resources, the first one is extracted from a treebank, the second one is computed on a large corpora and the third one is an existing syntactic lexicon. Experiments on the French Treebank showed a 15.24% reduction of er- roneous subcategorization frames (SF) s...