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Abstract

VP VBD increased NP CD 11 NN % PP TO to NP QP # # CD 2.5 CD billion PP IN from NP QP # # CD 2.25 CD billion Slav Petrov, Leon Barrett and Dan Klein Non-Local Modeling with a Mixture of PCFGs Empirical Motivation VP VBD increased NP CD 11 NN % PP TO to NP QP # # CD 2.5 CD billion PP IN from NP QP # # CD 2.25 CD billion Verb Phrase Expansion: capture with lexicalization. VP VBD increased NP CD 11 NN % PP TO to NP QP # # CD 2.5 CD billion PP IN from NP QP # # CD 2.25 CD billion

References (1)

  1. Recent Development "Learning Accurate, Compact, and Interpretable Tree Annotation", Petrov et al., ACL 2006: F 1 = 90.2%. More flexible learning framework. Split and merge training to keep grammar compact. Similar in spirit to Klein & Manning 2003 and Matsuzaki et al. 2005.