Modeling local coherence: An entity-based approach

  • Authors:
  • Regina Barzilay;Mirella Lapata

  • Affiliations:
  • -;-

  • Venue:
  • Computational Linguistics
  • Year:
  • 2008

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Abstract

This article proposes a novel framework for representing and measuring local coherence. Central to this approach is the entity-grid representation of discourse, which captures patterns of entity distribution in a text. The algorithm introduced in the article automatically abstracts a text into a set of entity transition sequences and records distributional, syntactic, and referential information about discourse entities. We re-conceptualize coherence assessment as a learning task and show that our entity-based representation is well-suited for ranking-based generation and text classification tasks. Using the proposed representation, we achieve good performance on text ordering, summary coherence evaluation, and readability assessment.