Ke Ting C, Ibrahim N, Huspi SH, Nasir Wan Kadir WM. A Class Density-Weighted Gain Ratio Feature Selection for Multiclass Student Engagement Classification. IJARPED [Internet]. 2025 Oct. 1 [cited 2026 Feb. 4];14(4):186-202. Available from: https://ijarped.com/index.php/journal/article/view/3842