Statistical Parsing with an Automatically-Extracted Tree Adjoining Grammar

We discuss the advantages of lexicalized tree-adjoining grammar as an alternative to lexicalized PCFG for statistical parsing, describingthe induction of a probabilistic LTAG model from the Penn Treebank and evaluating its parsing performance. We nd that this induction method is an improvement over the EM-based method of Hwa, 1998, and that the induced model yields results comparable to lexicalized PCFG.

• Type: Conference
• Year: 2000
• Where: ACL
• Authors: David Chiang
• Keywords: ACL 2000, ACL 2007, Lexicalized, Probabilistic Ltag Model, Statistical Parsing