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Expressivity and comparison of models of discourse structure

Venant, Antoine and Asher, Nicholas and Muller, Philippe and Denis, Pascal and Afantenos, Stergos Expressivity and comparison of models of discourse structure. (2013) In: 14th Annual Special Interest Group on Discourse and Dialogue Meeting (SIGDIAL 2013), 22 August 2013 - 24 August 2013 (Metz, France).

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Official URL: http://www.sigdial.org/workshops/sigdial2013/proceedings/index.html

Abstract

Several discourse annotated corpora now exist for NLP exploitation. Nevertheless, it is not clear how these annotations compare: are they incompatible, incomparable, or do they share some inter- pretations? In this paper, we relate three types of discourse annotation as found in: (i) the RST Tree Bank corpus, (ii) SDRT corpora DISCOR and ANNODIS, and (iii) dependency tree structures. The latter have not yet been used in actual annotations, but represent elementary substructures which are interesting for automated parsing. Specifically, we discuss two ways of interpreting RST trees by taking discourse relations as semantics operators, one is fully specified, the other one underspecified. We also provide an underspecified semantic interpretation of dependency trees. We define trans- lations between RST and DT that preserve these underspecified interpretations. On this basis, we design similarity measures that quantify the loss of information implied by these translations. Over- all, these translations and metrics provide a unified framework that will hopefully enable us to take advantage of the various existing discourse annotation data that are available for automated tasks.

Item Type:Conference or Workshop Item (Paper)
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
French research institutions > Institut National de la Recherche en Informatique et en Automatique - INRIA (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Université de Toulouse > Université Toulouse - Jean Jaurès - UT2J (FRANCE)
Université de Toulouse > Université Toulouse 1 Capitole - UT1 (FRANCE)
Other partners > Université Lille 1, Sciences et Technologies - Lille 1 (FRANCE)
Other partners > Université Lille 3 - Sciences humaines et sociales (FRANCE)
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Deposited By: IRIT IRIT
Deposited On:07 Oct 2015 11:50

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