IDOWU, GBOLAHAN ADENIRAN, and JOSIAH ENDURANCE OWOLABI. 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 -29. https://lagjma.unilag.edu.ng/article/view/2874.