Similarity between pairs of co-indexed trees for textual entailment recognition

  • Authors:
  • Fabio Massimo Zanzotto;Alessandro Moschitti

  • Affiliations:
  • University Of Milan-Bicocca, Milano, Italy;University Of Rome "Tor Vergata", Roma, Italy

  • Venue:
  • TextGraphs-1 Proceedings of the First Workshop on Graph Based Methods for Natural Language Processing
  • Year:
  • 2006

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Abstract

In this paper we present a novel similarity between pairs of co-indexed trees to automatically learn textual entailment classifiers. We defined a kernel function based on this similarity along with a more classical intra-pair similarity. Experiments show an improvement of 4.4 absolute percent points over state-of-the-art methods.