1. Zikopoulos P, Eaton C, DeRoos D, Deutch T, Lapis G (2011) Understanding big data: analytics for enterprise class Hadoop and streaming data. McGraw-Hill Osborne Media
2. Agarwal A, Xie B, Vovsha I, Rambow O, Passonneau R (2011) Sentiment analysis of twitter data. In: Proceedings of ACL 2011 workshop on languages in social media, pp 30–38
3. Saif H, He Y, Alani H (2011) Semantic smoothing for twitter sentiment analysis. In: Proceeding of the 10th international semantic web conference (ISWC)
4. Kiritchenko S, Zhu X, Mohammad SM (2014) Sentiment analysis of short informal texts. J Artif Intell Res 723–762
5. Das A, Bandyopadhyay S (2010) SentiWordNet for Indian languages. In: Proceedings of the 8th workshop on Asian Language Resources (ALR), August, pp 56–63