fahrendy, R.N.F., Fara Triadi and Agus Triyono 2026. A User Fatigue Prediction System Based on Heart Rate and SpO₂ Data from Smartwatch on Android Platform. Journal of Artificial Intelligence and Engineering Applications (JAIEA). 6, 1 (Oct. 2026), 554–563. DOI:https://doi.org/10.59934/jaiea.v6i1.2795.