Veins Theory: A Model of Global Discourse Cohesion and Coherence (1998) [28 citations — 7 self]
http://acl.ldc.upenn.edu/P/P98/P98-1044.pdf
http://www.cs.vassar.edu/~ide/papers/coling98.ps
http://www.cs.vassar.edu/~ide/papers/coling98.pdf
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author = {Dan Cristea and Nancy Ide and Laurent Romary},
title = {Veins Theory: A Model of Global Discourse Cohesion and Coherence},
booktitle = {In Proceedings of the 36th Annual Meeting of the Association for Computational Linguistics and of the 17th International Conference on Computational Linguistics (COLING/ACL’98},
year = {1998},
pages = {281--285}
}
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Abstract:
In this paper, we propose a generalization of Centering Theory (CT) (Grosz, Joshi, Weinstein 1995) called Veins Theory (VT), which extends the applicability of centering rules from local to global discourse. A key facet of the theory involves the identification of veins over discourse structure trees such as those defined in RST, which delimit domains of referential accessibility for each unit in a discourse. Once identified, reference chains can be extended across segment boundaries, thus enabling the application of CT over the entire discourse. In this paper, we describe the processes by which veins are defined over discourse structure trees and how CT can be applied to global discourse by using these chains. We also define a discourse smoothness index which can be used to compare different discourse structures and interpretations, and show how VT can be used to abstract the most important information from a discourse by identifying the minimal text units required to understand it. F...
