DWIPAYANA, M. Y.; PRADIPTA, G. A.; HOSTIADI, D. P. Safety-Oriented Air Quality Index Classification for Imbalanced Data Using Optimized Boosting Models with Optuna and Oversampling . TIERS Information Technology Journal, [S. l.], v. 7, n. 1, p. 17-31, 2026. DOI: 10.38043/tiers.v7i1.7558. Disponível em: https://journal.undiknas.ac.id/index.php/tiers/article/view/7558. Acesso em: 28 jul. 2026.