Sugihdharma, J. A., Bachtiar, F., & Yudistira, N. (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 - 561. https://doi.org/10.29207/resti.v9i3.6161