Generating high-coverage semantic orientation lexicons from overtly marked words and a thesaurus

TitleGenerating high-coverage semantic orientation lexicons from overtly marked words and a thesaurus
Publication TypeConference Papers
Year of Publication2009
AuthorsMohammad S, Dunne C, Dorr BJ
Conference NameProceedings of the 2009 Conference on Empirical Methods in Natural Language Processing: Volume 2 - Volume 2
Date Published2009///
PublisherAssociation for Computational Linguistics
Conference LocationStroudsburg, PA, USA
ISBN Number978-1-932432-62-6
Abstract

Sentiment analysis often relies on a semantic orientation lexicon of positive and negative words. A number of approaches have been proposed for creating such lexicons, but they tend to be computationally expensive, and usually rely on significant manual annotation and large corpora. Most of these methods use WordNet. In contrast, we propose a simple approach to generate a high-coverage semantic orientation lexicon, which includes both individual words and multi-word expressions, using only a Roget-like thesaurus and a handful of affixes. Further, the lexicon has properties that support the Polyanna Hypothesis. Using the General Inquirer as gold standard, we show that our lexicon has 14 percentage points more correct entries than the leading WordNet-based high-coverage lexicon (SentiWordNet). In an extrinsic evaluation, we obtain significantly higher performance in determining phrase polarity using our thesaurus-based lexicon than with any other. Additionally, we explore the use of visualization techniques to gain insight into the our algorithm beyond the evaluations mentioned above.

URLhttp://dl.acm.org/citation.cfm?id=1699571.1699591