Paper: Coordinate Noun Phrase Disambiguation in a Generative Parsing Model

ACL ID P07-1086
Title Coordinate Noun Phrase Disambiguation in a Generative Parsing Model
Venue Annual Meeting of the Association of Computational Linguistics
Session Main Conference
Year 2007
Authors

In this paper we present methods for im- proving the disambiguation of noun phrase (NP) coordination within the framework of a lexicalised history-based parsing model. As well as reducing noise in the data, we look at modelling two main sources of information for disambiguation: symmetry in conjunct structure, and the dependency between con- junct lexical heads. Our changes to the base- line model result in an increase in NP coor- dination dependency f-score from 69.9% to 73.8%, which represents a relative reduction in f-score error of 13%.