Recognizing radicalization indicators in text documents using human-in-the-loop information extraction and NLP techniques - Hung, Benjamin W.K.; Renugopalakrishnan, Priyanka; Moloney, Evan; Libretti, Rosanne; Klausen, Jytte; Jayasumana, Anura P.; Murmudalige, Shashika R. (Institute of Electrical and Electronics Engineers, 2019)