Handling sparse data by successive abstraction

  • Authors:
  • Christer Samuelsson

  • Affiliations:
  • Universität des Saarlandes, Saarbrücken, Germany

  • Venue:
  • COLING '96 Proceedings of the 16th conference on Computational linguistics - Volume 2
  • Year:
  • 1996

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Abstract

A general, practical method for handling sparse data that avoids held-out data and iterative reestimation is derived from first principles. It has been tested on a part-of-speech tagging task and out-performed (deleted) interpolation with context-independent weights, even when the latter used a globally optimal parameter setting determined a posteriori.