Computation of infix probabilities for probabilistic context-free grammars

  • Authors:
  • Mark-Jan Nederhof;Giorgio Satta

  • Affiliations:
  • University of St Andrews, United Kingdom;University of Padua, Italy

  • Venue:
  • EMNLP '11 Proceedings of the Conference on Empirical Methods in Natural Language Processing
  • Year:
  • 2011

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Abstract

The notion of infix probability has been introduced in the literature as a generalization of the notion of prefix (or initial substring) probability, motivated by applications in speech recognition and word error correction. For the case where a probabilistic context-free grammar is used as language model, methods for the computation of infix probabilities have been presented in the literature, based on various simplifying assumptions. Here we present a solution that applies to the problem in its full generality.