IDOWU GA, OWOLABI JE. 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. LAGJMA [Internet]. 2026Mar.9 [cited 2026Mar.23];6(1):107 -129. Available from: https://lagjma.unilag.edu.ng/article/view/2874