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Detecting Speculations, Contrasts and Conditionals in Consumer Reviews
Linnaeus University, Faculty of Technology, Department of Computer Science. Gavagai AB. (ISOVIS)ORCID iD: 0000-0001-6164-7762
Lund University. (ISOVIS)
Gavagai AB, Sweden.
Lund University.ORCID iD: 0000-0002-7240-9003
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2015 (English)In: Proceedings of the 6th Workshop on Computational Approaches to Subjectivity, Sentiment & Social Media Analysis (WASSA '15): Short Paper Track / [ed] Alexandra Balahur, Erik van der Goot, Piek Vossen, and Andrés Montoyo, Association for Computational Linguistics , 2015, p. 162-168Conference paper, Published paper (Refereed)
Abstract [en]

A support vector classifier was compared to a lexicon-based approach for the task of detecting the stance categories speculation, contrast and conditional in English consumer reviews. Around 3,000 training instances were required to achieve a stable performance of an F-score of 90 for speculation. This outperformed the lexicon-based approach, for which an F-score of just above 80 was achieved. The machine learning results for the other two categories showed a lower average (an approximate F-score of 60 for contrast and 70 for conditional), as well as a larger variance, and were only slightly better than lexicon matching. Therefore, while machine learning was successful for detecting speculation, a well-curated lexicon might be a more suitable approach for detecting contrast and conditional. 

Place, publisher, year, edition, pages
Association for Computational Linguistics , 2015. p. 162-168
Keywords [en]
consumer reviews, support vector classifier, stance
National Category
Language Technology (Computational Linguistics)
Research subject
Computer and Information Sciences Computer Science
Identifiers
URN: urn:nbn:se:lnu:diva-45649ISBN: 978-1-941643-32-7 (print)OAI: oai:DiVA.org:lnu-45649DiVA, id: diva2:844975
Conference
6th Workshop on Computational Approaches to Subjectivity, Sentiment & Social Media Analysis (WASSA '15), Lisbon, Portugal, 2015
Projects
StaViCTA
Funder
Swedish Research Council, 2012-5659Available from: 2015-08-10 Created: 2015-08-10 Last updated: 2018-01-11Bibliographically approved

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Skeppstedt, MariaParadis, CaritaKerren, Andreas

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf