Sugihdharma, Joseph Ananda, Fitra Bachtiar, and Novanto Yudistira. 2025. “Improving Frame-Based Engagement Classification in E-Learning Using EfficientNet and Normalized Loss Weighting”. Jurnal RESTI (Rekayasa Sistem Dan Teknologi Informasi) 9 (3), 551 -61. https://doi.org/10.29207/resti.v9i3.6161.