Reranking a wide-coverage ccg parser
Dominick Ng, Matthew Honnibal, James Curran · 2010
n-best parse reranking is an important technique for improving the accuracy of statistical parsers. Reranking is not constrained by the dynamic programming required for tractable parsing, so arbitrary features of each parse may be considered. We adapt the reranking features and methodology used by Charniak and Johnson (2005) for the C&C Combinatory Categorial Grammar parser, and develop new features based on the richer formalism. The reranker achieves a labeled dependency F-score of 87.59%, which is a significant improvement over prior results. 1