1. Cohen, J.A.: Coefficient of Agreement for Nominal Scales. Educational and Psychological Measurement 20(1), 37–46 (1960)
2. Hassan, A., Qazvinian, V., Radev, D.R.: What’s with the attitude? A study of participant attitude in multi-party online discussions. In: Empirical Methods on Natural Language Processing, pp. 1245–1255. ACL (2010)
3. Jakob, N., Weber, S.H., Muller, M.C., Gurevych, I.: Beyond the stars: exploiting free-text user reviews to improve the accuracy of movie recommendations. In: Conference on Information and Knowledge Management, pp. 57–64. ACM, New York (2009)
4. Kennedy, A., Inkpen, D.: Sentiment classification of movie reviews using contextual valence shifters. Computational Intelligence 22(2), 110–125 (2006)
5. Moilanen, K., Pulman, S.: Sentiment Composition. In: Recent Advances in Natural Language Processing, pp. 378–382 (2007)