Generalizing over lexical features: selectional preferences for semantic role classification

  • Authors:
  • Beñat Zapirain;Eneko Agirre;Lluís Màrquez

  • Affiliations:
  • University of the Basque Country, Donostia, Basque Country;University of the Basque Country, Donostia, Basque Country;Technical University of Catalonia, Barcelona, Catalonia

  • Venue:
  • ACLShort '09 Proceedings of the ACL-IJCNLP 2009 Conference Short Papers
  • Year:
  • 2009

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Abstract

This paper explores methods to alleviate the effect of lexical sparseness in the classification of verbal arguments. We show how automatically generated selectional preferences are able to generalize and perform better than lexical features in a large dataset for semantic role classification. The best results are obtained with a novel second-order distributional similarity measure, and the positive effect is specially relevant for out-of-domain data. Our findings suggest that selectional preferences have potential for improving a full system for Semantic Role Labeling.