Speech recognition and the frequency of recently used words: a modified Markov model for natural language

  • Authors:
  • Roland Kuhn

  • Affiliations:
  • McGill University, Montreal

  • Venue:
  • COLING '88 Proceedings of the 12th conference on Computational linguistics - Volume 1
  • Year:
  • 1988

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Abstract

Speech recognition systems incorporate a language model which, at each stage of the recognition task, assigns a probability of occurrence to each word in the vocabulary. A class of Markov language models identified by Jelinek has achieved considerable success in this domain. A modification of the Markov approach, which assigns higher probabilities to recently used words, is proposed and tested against a pure Markov model. Parameter calculation and comparison of the two models both involve use of the LOB Corpus of tagged modern English.