Two multivariate generalizations of pointwise mutual information

  • Authors:
  • Tim Van de Cruys

  • Affiliations:
  • University of Cambridge, United Kingdom

  • Venue:
  • DiSCo '11 Proceedings of the Workshop on Distributional Semantics and Compositionality
  • Year:
  • 2011

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Abstract

Since its introduction into the NLP community, pointwise mutual information has proven to be a useful association measure in numerous natural language processing applications such as collocation extraction and word space models. In its original form, it is restricted to the analysis of two-way co-occurrences. NLP problems, however, need not be restricted to two-way co-occurrences; often, a particular problem can be more naturally tackled when formulated as a multi-way problem. In this paper, we explore two multivariate generalizations of pointwise mutual information, and explore their usefulness and nature in the extraction of subject verb object triples.