[Corpora-List] New version of the MPQA opinion corpus

[Jan Wiebe]

A new version (2.0) of the MPQA Opinion Corpus, which contains news articles
and other text documents manually annotated for opinions and other private
states   (i.e., beliefs, emotions, sentiments, speculations, etc.),  is
available for download (http://www.cs.pitt.edu/mpqa/databaserelease/).

    The main changes in this version of the MPQA Opinion Corpus are:

          - the extension of the MPQA annotation scheme to include two new
types of annotations: attitude annotations (e.g., positive and negative
sentiment & positive and negative arguing) and target annotations (i.e., the
objects of the opinions).
          - the addition of 157 new annotated documents (in the full MPQA
annotation scheme, including attitudes and targets) growing the size of  the
corpus to 692 documents
          - the inclusion of annotations for answers to a set of fact and
opinion questions for the OpQA subset of the corpus          - the
refinement of some annotations

Best,
Jan Wiebe
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