Siringo-ringo AR, Paninggalih R, Putra RK. SCALABLE DETECTION OF COST INEFFICIENCY IN BPJS KESEHATAN CLAIMS USING XGBOOST WITH IMBALANCE LEARNING AND VAEX-BASED BIG DATA PROCESSING. BAREKENG: J. Math. & App. [Internet]. 24Aug.2026 [cited 25Aug.2026];20(4):3531-44. Available from: https://ojs3.unpatti.ac.id/index.php/barekeng/article/view/23082