1. Pang B., and Lee L., Opinion mining and sentiment analysis, Foundations and Trends® in Information Retrieval, 1–135 (2008)
2. Tom W., Hadoop: The definitive guide, O’Reilly Media, Inc. (2012)
3. https://manifoldcf. apache.org/ (2015)
4. http://www.statista. com/statistics/272014/global-social-networks-ranked-by-number-of-users/, (2015)
5. Aydin G., and Hallac İ. R., Distributed NLP, ISITES2015 (2015)