Evaluating Topic Coherence Using Distributional Semantics

  title={Evaluating Topic Coherence Using Distributional Semantics},
  author={Nikolaos Aletras and Mark Stevenson},
This paper introduces distributional semantic similarity methods for automatically measuring the coherence of a set of words generated by a topic model. We construct a semantic space to represent each topic word by making use of Wikipedia as a reference corpus to identify context features and collect frequencies. Relatedness between topic words and context features is measured using variants of Pointwise Mutual Information (PMI). Topic coherence is determined by measuring the distance between… CONTINUE READING
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