Methods for the qualitative evaluation of lexical association measures

  • Authors:
  • Stefan Evert;Brigitte Krenn

  • Affiliations:
  • University of Stuttgart, Stuttgart, Germany;Austrian Research Institute for Artificial Intelligence (ÖFAI), Vienna, Austria

  • Venue:
  • ACL '01 Proceedings of the 39th Annual Meeting on Association for Computational Linguistics
  • Year:
  • 2001

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Abstract

This paper presents methods for a qualitative, unbiased comparison of lexical association measures and the results we have obtained for adjective-noun pairs and preposition-noun-verb triples extracted from German corpora. In our approach, we compare the entire list of candidates, sorted according to the particular measures, to a reference set of manually identified "true positives". We also show how estimates for the very large number of hapaxlegomena and double occurrences can be inferred from random samples.