Extraction of semantic information from an ordinary English dictionary and its evaluation

  • Authors:
  • Jun-ichi Nakramura;Makoto Nagao

  • Affiliations:
  • Kyoto University, Kyoto, Japan;Kyoto University, Kyoto, Japan

  • Venue:
  • COLING '88 Proceedings of the 12th conference on Computational linguistics - Volume 2
  • Year:
  • 1988

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Abstract

The automatic extraction of semantic information especially semantic relationships between words, from an odinary English dictionary is described. For the extraction, the magnetic tape version of LDOCE (Longman Dictionary of Contemporary English, 1978 edition) is loaded into a relational database system. Developed extraction programs analyze a definition sentence in LDOCE with a pattern matching based algorithm. Since this algorithm is not perfect, the result of the extraction has been compared with semantic information (semantic markers) which the magnetic tape version of LDOCE contains. The result of comparison is also discussed for evaluating the reliability of such an automatic extraction.