IDOWU, G. A., & 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), 107 - 129. Retrieved from https://lagjma.unilag.edu.ng/article/view/2874