Realization of Discourse Relations by Other Means: Alternative Lexicalizations

Rashmi Prasad; Aravind K. Joshi; Bonnie L. Webber

Realization of Discourse Relations by Other Means: Alternative Lexicalizations

Rashmi Prasad, Aravind K. Joshi, Bonnie L. Webber

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract / Description of output

Studies of discourse relations have not, in the past, attempted to characterize what serves as evidence for them, beyond lists of frozen expressions, or markers, drawn from a few well-defined syntactic classes. In this paper, we describe how the lexicalized discourse relation annotations of the Penn Discourse Treebank (PDTB) led to the discovery of a wide range of additional expressions, annotated as AltLex (alternative lexicalizations) in the PDTB 2.0. Further analysis of AltLex annotation suggests that the set of markers is open-ended, and drawn from a wider variety of syntactic types than currently assumed. As a first attempt towards automatically identifying discourse relation markers, we propose the use of syntactic paraphrase methods.

Original language	English
Title of host publication	COLING 2010, 23rd International Conference on Computational Linguistics, Posters Volume, 23-27 August 2010, Beijing, China
Pages	1023-1031
Number of pages	9
Publication status	Published - 2010

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http://aclweb.org/anthology-new/C/C10/C10-2118.pdf

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title = "Realization of Discourse Relations by Other Means: Alternative Lexicalizations",

abstract = "Studies of discourse relations have not, in the past, attempted to characterize what serves as evidence for them, beyond lists of frozen expressions, or markers, drawn from a few well-defined syntactic classes. In this paper, we describe how the lexicalized discourse relation annotations of the Penn Discourse Treebank (PDTB) led to the discovery of a wide range of additional expressions, annotated as AltLex (alternative lexicalizations) in the PDTB 2.0. Further analysis of AltLex annotation suggests that the set of markers is open-ended, and drawn from a wider variety of syntactic types than currently assumed. As a first attempt towards automatically identifying discourse relation markers, we propose the use of syntactic paraphrase methods.",

author = "Rashmi Prasad and Joshi, {Aravind K.} and Webber, {Bonnie L.}",

year = "2010",

language = "English",

pages = "1023--1031",

booktitle = "COLING 2010, 23rd International Conference on Computational Linguistics, Posters Volume, 23-27 August 2010, Beijing, China",

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T1 - Realization of Discourse Relations by Other Means: Alternative Lexicalizations

AU - Prasad, Rashmi

AU - Joshi, Aravind K.

AU - Webber, Bonnie L.

PY - 2010

Y1 - 2010

N2 - Studies of discourse relations have not, in the past, attempted to characterize what serves as evidence for them, beyond lists of frozen expressions, or markers, drawn from a few well-defined syntactic classes. In this paper, we describe how the lexicalized discourse relation annotations of the Penn Discourse Treebank (PDTB) led to the discovery of a wide range of additional expressions, annotated as AltLex (alternative lexicalizations) in the PDTB 2.0. Further analysis of AltLex annotation suggests that the set of markers is open-ended, and drawn from a wider variety of syntactic types than currently assumed. As a first attempt towards automatically identifying discourse relation markers, we propose the use of syntactic paraphrase methods.

AB - Studies of discourse relations have not, in the past, attempted to characterize what serves as evidence for them, beyond lists of frozen expressions, or markers, drawn from a few well-defined syntactic classes. In this paper, we describe how the lexicalized discourse relation annotations of the Penn Discourse Treebank (PDTB) led to the discovery of a wide range of additional expressions, annotated as AltLex (alternative lexicalizations) in the PDTB 2.0. Further analysis of AltLex annotation suggests that the set of markers is open-ended, and drawn from a wider variety of syntactic types than currently assumed. As a first attempt towards automatically identifying discourse relation markers, we propose the use of syntactic paraphrase methods.

M3 - Conference contribution

SP - 1023

EP - 1031

BT - COLING 2010, 23rd International Conference on Computational Linguistics, Posters Volume, 23-27 August 2010, Beijing, China

ER -

Realization of Discourse Relations by Other Means: Alternative Lexicalizations

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