Lexical and structural biases for function parsing

  • Authors:
  • Gabriele Musillo;Paola Merlo

  • Affiliations:
  • University of Geneva, Geneva, Switzerland;University of Geneva, Geneva, Switzerland

  • Venue:
  • Parsing '05 Proceedings of the Ninth International Workshop on Parsing Technology
  • Year:
  • 2005

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Abstract

In this paper, we explore two extensions to an existing statistical parsing model to produce richer parse trees, annotated with function labels. We achieve significant improvements in parsing by modelling directly the specific nature of function labels, as both expressions of the lexical semantics properties of a constituent and as syntactic elements whose distribution is subject to structural locality constraints. We also reach state-of-the-art accuracy on function labelling. Our results suggest that current statistical parsing methods are sufficiently robust to produce accurate shallow functional or semantic annotation, if appropriately biased.