Spectral learning of latent-variable PCFGs

  • Authors:
  • Shay B. Cohen;Karl Stratos;Michael Collins;Dean P. Foster;Lyle Ungar

  • Affiliations:
  • Columbia University;Columbia University;Columbia University;University of Pennsylvania;University of Pennsylvania

  • Venue:
  • ACL '12 Proceedings of the 50th Annual Meeting of the Association for Computational Linguistics: Long Papers - Volume 1
  • Year:
  • 2012

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Abstract

We introduce a spectral learning algorithm for latent-variable PCFGs (Petrov et al., 2006). Under a separability (singular value) condition, we prove that the method provides consistent parameter estimates.