Abubakar, Haisal Dauda, Sharin Hazlin Huspi, and Mahmood Umar. “A Scheme of Pairwise Feature Combinations to Improve Sentiment Classification Using Book Review Dataset”. International Journal of Innovative Computing 12, no. 1 (November 16, 2021): 25–33. Accessed July 7, 2022. https://ijic.utm.my/index.php/ijic/article/view/344.