F. , C. Savoy, and J. , UniNE at TREC 2008: Fact and Opinion Retrieval in the Blogsphere, Proceedings of the 17 th Text REtrieval Conference, 2008.

M. , J. R. White, and P. R. , The Language of Evaluation: Appraisal in English, 2005.

M. , G. De, R. , and M. , « Capturing global mood levels using blog posts, Proceedings of the AAAI 2006 Spring Symposium on Computational Approaches to Analysing Weblogs (AAAI-CAAW 2006), pp.145-152, 2006.

M. , G. De, R. , and M. , « A study of blog search, Proceedings of the 28 th European Conference on Information Retrieval, pp.289-301, 2006.

M. , G. Glance, and N. , « Predicting movie sales from blogger sentiment, Proceedings of the AAAI 2006 Spring Symposium on Computational Approaches to Analysing Weblogs (AAAI-CAAW 2006), pp.155-158, 2006.

P. and B. Lee-l, « Opinion Mining and Sentiment Analysis, Foundations and Trends in Information Retrieval, vol.2, issue.12, pp.1-135, 2008.

P. , A. &. Etzioni, and O. , « Extracting product features and opinions from reviews, Proceedings of the Conference on Human Language Technology and Empirical Methods in Natural Language Processing (HLT/EMNLP'05), pp.339-346, 2005.

R. , E. Wiebe, and J. , « Learning extraction patterns for subjective expressions, Proceedings of the Conference on Empirical Methods in Natural Language Processing (EMNLP'03), pp.105-112, 2003.

W. , J. Wilson, T. , &. Cardie, and C. , « Annotating expressions of opinions and emotions in language, Language Resources and Evaluation, vol.39, issue.2-3, pp.165-210, 2005.

Z. , G. Joshi, H. Bayrak, and C. , « Topic categorization for relevancy and opinion detection, Proceedings of the 16 th Text REtrieval Conference, 2007.