1. Ahmad S, Asghar MZ, Alotaibi FM, Awan I (2019) Detection and classification of social media-based extremist affiliations using sentiment analysis techniques. HCIS 9(1):24
2. AZSecure-data (2013) Turn to Islam forum dataset. University of Arizona Artificial Intelligence Lab, AZSecure-data. https://www.azsecure-data.org/dark-web-forums.html
3. Baccianella S, Esuli A, Sebastiani F (2010) Sentiwordnet 3.0: an enhanced lexical resource for sentiment analysis and opinion mining. In: LREC, vol. 10, pp 2200–2204
4. Becker H, Naaman M, Gravano L (2011) Selecting quality twitter content for events. In: Fifth international AAAI conference on weblogs and social media
5. Bouazizi M, Ohtsuki T (2017) A pattern-based approach for multi-class sentiment analysis in twitter. IEEE Access 5:20617–20639