Dina, N. Z., Yunardi, R. T., & Firdaus, A. A. (2021). Utilizing Text Mining and Feature-Sentiment-Pairs to Support Data-Driven Design Automation Massive Open Online Course. International Journal of Emerging Technologies in Learning (iJET), 16(01), pp. 134–151. https://doi.org/10.3991/ijet.v16i01.17095