Neural RST-based Evaluation of Discourse Coherence

September 30, 2020 ยท Declared Dead ยท ๐Ÿ› AACL

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Authors Grigorii Guz, Peyman Bateni, Darius Muglich, Giuseppe Carenini arXiv ID 2009.14463 Category cs.CL: Computation & Language Citations 7 Venue AACL Last Checked 5 months ago
Abstract
This paper evaluates the utility of Rhetorical Structure Theory (RST) trees and relations in discourse coherence evaluation. We show that incorporating silver-standard RST features can increase accuracy when classifying coherence. We demonstrate this through our tree-recursive neural model, namely RST-Recursive, which takes advantage of the text's RST features produced by a state of the art RST parser. We evaluate our approach on the Grammarly Corpus for Discourse Coherence (GCDC) and show that when ensembled with the current state of the art, we can achieve the new state of the art accuracy on this benchmark. Furthermore, when deployed alone, RST-Recursive achieves competitive accuracy while having 62% fewer parameters.
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