A lightweight semantic chunking model based on tagging

  • Authors:
  • Kadri Hacioglu

  • Affiliations:
  • University of Colorado, Boulder

  • Venue:
  • HLT-NAACL-Short '04 Proceedings of HLT-NAACL 2004: Short Papers
  • Year:
  • 2004

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Abstract

In this paper, a framework for the development of a fast, accurate, and highly portable semantic chunker is introduced. The framework is based on a non-overlapping, shallow tree-structured language. The derivation of the tree is considered as a sequence of tagging actions in a predefined linguistic context, and a novel semantic chunker is accordingly developed. It groups the phrase chunks into the arguments of a given predicate in a bottom-up fashion. This is quite different from current approaches to semantic parsing or chunking that depend on full statistical syntactic parsers that require tree bank style annotation. We compare it with a recently proposed word-by-word semantic chunker and present results that show that the phrase-by-phrase approach performs better than its word-by-word counterpart.