Integrated shallow and deep parsing: TopP meets HPSG

  • Authors:
  • Anette Frank;Markus Becker;Berthold Crysmann;Bernd Kiefer;Ulrich Schäfer

  • Affiliations:
  • DFKI GmbH, Saarbrücken, Germany;University of Edinburgh, UK;DFKI GmbH, Saarbrücken, Germany;DFKI GmbH, Saarbrücken, Germany;DFKI GmbH, Saarbrücken, Germany

  • Venue:
  • ACL '03 Proceedings of the 41st Annual Meeting on Association for Computational Linguistics - Volume 1
  • Year:
  • 2003

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Abstract

We present a novel, data-driven method for integrated shallow and deep parsing. Mediated by an XML-based multi-layer annotation architecture, we interleave a robust, but accurate stochastic topological field parser of German with a constraint-based HPSG parser. Our annotation-based method for dovetailing shallow and deep phrasal constraints is highly flexible, allowing targeted and fine-grained guidance of constraint-based parsing. We conduct systematic experiments that demonstrate substantial performance gains.