SADRI, Farhad; MOHAMADI , Amir Sajad; GHOLAMI , Ariana. A Comparative Analysis of XGBoost and DNN in Online Payment Fraud Detection under Extreme Class Imbalance: A Cost-Sensitive Optimization Approach Based on the F3-Score. Business, Marketing, and Finance Open, [S. l.], p. 1–15, 2026. Disponível em: https://bmfopen.com/index.php/bmfopen/article/view/446.. Acesso em: 27 may. 2026.