Madani, A.F., Poningsih, P., Almaida, Z. and Saputra, W. 2026. Optimization Of Hybrid K-Means–Naïve Bayes Using Optuna for Classification of Global Plastic Waste Management Levels . Jurnal Teknik Informatika (Jutif). 7, 2 (Apr. 2026), 1818–1833. DOI:https://doi.org/10.52436/1.jutif.2026.7.2.5651.