Hayati, Hind, et al. “Doc2Vec &Naïve Bayes: Learners’ Cognitive Presence Assessment through Asynchronous Online Discussion TQ Transcripts”. International Journal of Emerging Technologies in Learning (iJET), vol. 14, no. 08, Apr. 2019, pp. pp. 70-81, doi:10.3991/ijet.v14i08.9964.