MPQA Opinion Corpus Release Page

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Available versions

Version 3.0 (entity/event-level target added)

Version 2.0 (attitude and span-based target added)

Version 1.2 (contextual polarity added)


The paper describing the MPQA 3.0 annotation scheme:

    Lingjia Deng and Janyce Wiebe (2015). MPQA 3.0: Entity/Event-Level Sentiment Corpus. 2015 Conference of the North American Chapter of the Association for Computational Linguistics – Human Language Technologies, Denver, Colorado, USA.

The main paper describing the core annotation scheme:

The chapter from Theresa Wilson's Dissertation describing the new attitude and target annotations :

    Chapter 7 from Theresa Ann Wilson (2008). Fine-grained Subjectivity and Sentiment Analysis: Recognizing the Intensity, Polarity, and Attitudes of Private States. University of Pittsburgh.

The main paper describing the contextual polarity annotations :

The OpQA papers: