Identifying Opinion-Topics and Polarity of Parliamentary Debate Motions

Gavin Abercrombie, Riza Theresa Batista-Navarro


Abstract
Analysis of the topics mentioned and opinions expressed in parliamentary debate motions–or proposals–is difficult for human readers, but necessary for understanding and automatic processing of the content of the subsequent speeches. We present a dataset of debate motions with pre-existing ‘policy’ labels, and investigate the utility of these labels for simultaneous topic and opinion polarity analysis. For topic detection, we apply one-versus-the-rest supervised topic classification, finding that good performance is achieved in predicting the policy topics, and that textual features derived from the debate titles associated with the motions are particularly indicative of motion topic. We then examine whether the output could also be used to determine the positions taken by proposers towards the different policies by investigating how well humans agree in interpreting the opinion polarities of the motions. Finding very high levels of agreement, we conclude that the policies used can be reliable labels for use in these tasks, and that successful topic detection can therefore provide opinion analysis of the motions ‘for free’.
Anthology ID:
W18-6241
Volume:
Proceedings of the 9th Workshop on Computational Approaches to Subjectivity, Sentiment and Social Media Analysis
Month:
October
Year:
2018
Address:
Brussels, Belgium
Editors:
Alexandra Balahur, Saif M. Mohammad, Veronique Hoste, Roman Klinger
Venue:
WASSA
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
280–285
Language:
URL:
https://aclanthology.org/W18-6241
DOI:
10.18653/v1/W18-6241
Bibkey:
Cite (ACL):
Gavin Abercrombie and Riza Theresa Batista-Navarro. 2018. Identifying Opinion-Topics and Polarity of Parliamentary Debate Motions. In Proceedings of the 9th Workshop on Computational Approaches to Subjectivity, Sentiment and Social Media Analysis, pages 280–285, Brussels, Belgium. Association for Computational Linguistics.
Cite (Informal):
Identifying Opinion-Topics and Polarity of Parliamentary Debate Motions (Abercrombie & Batista-Navarro, WASSA 2018)
Copy Citation:
PDF:
https://aclanthology.org/W18-6241.pdf