OpinionFinder 2.x Release Page
OpinionFinder 2.x Available versions
OpinionFinder 1.x relied on many external software packages (e.g. SUNDANCE, SCOL, BoosTexter) which were neither built nor supported by our group. Since OpinionFinder was originally released in 2005, there were some compatibility issues with versions of various software and packages. We had reports that these problems sometimes resulted in an exhausting and even unsuccessful installation process of OpinionFinder. Currently, we released OpinionFinder 2 which is written in Java and is platform-independent.LICENSE AGREEMENT
Yejin Choi, Claire Cardie, Ellen Riloff, and Siddharth Patwardhan (2005). Identifying Sources of Opinions with Conditional Random Fields and Extraction Patterns. Human Language Technology Conference and Conference on Empirical Methods in Natural Language Processing (HLT/EMNLP 2005).
Ellen Riloff and Janyce Wiebe (2003). Learning Extraction Patterns for Subjective Expressions. Conference on Empirical Methods in Natural Language Processing (EMNLP-03). ACL SIGDAT. Pages 105-112.
Janyce Wiebe (2002). Instructions for Annotating Opinions in Newspaper Articles. Department of Computer Science Technical Report TR-02-101, University of Pittsburgh, Pittsburgh, PA.
Janyce Wiebe and Ellen Riloff (2005). Creating subjective and objective sentence classifiers from unannotated texts. Sixth International Conference on Intelligent Text Processing and Computational Linguistics (CICLing-2005). [Invited talk by Ellen Riloff]
Janyce Wiebe, Theresa Wilson, and Claire Cardie (2005). Annotating expressions of opinions and emotions in language. Language Resources and Evaluation, volume 39, issue 2-3, pp. 165-210.
Theresa Wilson, Janyce Wiebe and Paul Hoffmann (2005). Recognizing Contextual Polarity in Phrase-Level Sentiment Analysis. Human Language Technologies Conference/Conference on Empirical Methods in Natural Language Processing (HLT/EMNLP 2005).
Theresa Wilson, Paul Hoffmann, Swapna Somasundaran, Jason Kessler, JanyceWiebe, Yejin Choi, Claire Cardie, Ellen Riloff, Siddharth Patwardhan (2005). OpinionFinder: A system for subjectivity analysis. Proceedings of HLT/EMNLP 2005 Interactive Demonstrations. (demo)
Cem Akkaya, Janyce Wiebe and Rada Mihalcea (2009). Subjectivity Word Sense Disambiguation. Conference on Empirical Methods in Natural Language Processing (EMNLP-09).
Cem Akkaya, Janyce Wiebe, Alexander Conrad and Rada Mihalcea (2011). Improving the Impact of Subjectivity Word Sense Disambiguation on Contextual Opinion Analysis. Conference on Computational Natural Language Learning (CoNLL-2011).