Towards semi-supervised classification of discourse relations using feature correlations

Hugo Hernault; Danushka Bollegala; Mitsuru Ishizuka

Towards semi-supervised classification of discourse relations using feature correlations

Hugo Hernault, Danushka Bollegala, Mitsuru Ishizuka

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

Abstract

Two of the main corpora available for training discourse relation classifiers are the RST Discourse Treebank (RST-DT) and the Penn Discourse Treebank (PDTB), which are both based on the Wall Street Journal corpus. Most recent work using discourse relation classifiers have employed fully-supervised methods on these corpora. However, certain discourse relations have little labeled data, causing low classification performance for their associated classes. In this paper, we attempt to tackle this problem by employing a semi-supervised method for discourse relation classification. The proposed method is based on the analysis of feature cooccurrences in unlabeled data. This information is then used as a basis to extend the feature vectors during training. The proposed method is evaluated on both RST-DT and PDTB, where it significantly outperformed baseline classifiers. We believe that the proposed method is a first step towards improving classification performance, particularly for discourse relations lacking annotated data.

Original language	English
Title of host publication	Proceedings of the SIGDIAL 2010 Conference: 11th Annual Meeting of the Special Interest Group onDiscourse and Dialogue
Pages	55-58
Number of pages	4
Publication status	Published - 2010
Externally published	Yes
Event	11th Annual Meeting of the Special Interest Group on Discourse and Dialogue, SIGDIAL 2010 - Tokyo Duration: 2010 Sep 24 → 2010 Sep 25

Other

Other	11th Annual Meeting of the Special Interest Group on Discourse and Dialogue, SIGDIAL 2010
City	Tokyo
Period	10/9/24 → 10/9/25

ASJC Scopus subject areas

Computer Graphics and Computer-Aided Design
Computer Vision and Pattern Recognition
Human-Computer Interaction
Modelling and Simulation

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Towards semi-supervised classification of discourse relations using feature correlations. / Hernault, Hugo; Bollegala, Danushka; Ishizuka, Mitsuru.

Proceedings of the SIGDIAL 2010 Conference: 11th Annual Meeting of the Special Interest Group onDiscourse and Dialogue. 2010. p. 55-58.

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

Hernault, H, Bollegala, D & Ishizuka, M 2010, Towards semi-supervised classification of discourse relations using feature correlations. in Proceedings of the SIGDIAL 2010 Conference: 11th Annual Meeting of the Special Interest Group onDiscourse and Dialogue. pp. 55-58, 11th Annual Meeting of the Special Interest Group on Discourse and Dialogue, SIGDIAL 2010, Tokyo, 10/9/24.

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