Kho, Delvian Christoper, Hindriyanto Dwi Purnomo, and Hendry Hendry. “PERFORMANCE ANALYSIS OF GRADIENT BOOSTING MODELS VARIANTS IN PREDICTING THE DIRECTION OF STOCK CLOSING PRICES ON THE INDONESIA STOCK EXCHANGE”. BAREKENG: Jurnal Ilmu Matematika dan Terapan 19, no. 2 (April 1, 2025): 1393-1408. Accessed June 28, 2025. https://ojs3.unpatti.ac.id/index.php/barekeng/article/view/16208.