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Computational Linguistics

Hwee Tou Ng, Editor
March 2008, Vol. 34, No. 1, Pages 1-34
(doi: 10.1162/coli.2008.34.1.1)
© 2008 Massachusetts Institute of Technology
Modeling Local Coherence: An Entity-Based Approach
Article PDF (280.36 KB)

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.