IDOWU, G. A. and OWOLABI, J. E. (2026) “ENSEMBLE-BASED FRAUD DETECTION IN NIGERIAN BANKING: A SYNTHETIC DATA BENCHMARK AND COST-SENSITIVE ANALYSIS GBOLAHAN ADENIRAN IDOWU∗ AND JOSIAH ENDURANCE OWOLABI ABSTRACT. Fraud detection in Nigerian banking is critically hampered by a scarcity of authen”, Unilag Journal of Mathematics and Applications, 6(1), pp. 107 - 129. Available at: https://lagjma.unilag.edu.ng/article/view/2874 (Accessed: 23March2026).