Exploring the Effects of Word Roots for Arabic Sentiment Analysis Shereen Oraby author Yasser El-Sonbaty author Mohamad Abou El-Nasr author 2013-10 text Proceedings of the Sixth International Joint Conference on Natural Language Processing Ruslan Mitkov editor Jong C Park editor Asian Federation of Natural Language Processing Nagoya, Japan conference publication oraby-etal-2013-exploring https://aclanthology.org/I13-1054/ 2013-10 471 479