Mixing and blending syntactic and semantic dependencies

  • Authors:
  • Yvonne Samuelsson;Oscar Täckström;Sumithra Velupillai;Johan Eklund;Mark Fišel;Markus Saers

  • Affiliations:
  • Stockholm University;SICS / Uppsala University;Stockholm University / KTH;University College of Borås;University of Tartu;Uppsala University

  • Venue:
  • CoNLL '08 Proceedings of the Twelfth Conference on Computational Natural Language Learning
  • Year:
  • 2008

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Abstract

Our system for the CoNLL 2008 shared task uses a set of individual parsers, a set of stand-alone semantic role labellers, and a joint system for parsing and semantic role labelling, all blended together. The system achieved a macro averaged labelled F1-score of 79.79 (WSJ 80.92, Brown 70.49) for the overall task. The labelled attachment score for syntactic dependencies was 86.63 (WSJ 87.36, Brown 80.77) and the labelled F1-score for semantic dependencies was 72.94 (WSJ 74.47, Brown 60.18).