Mustafa Berk Keles

BI-GBDT: A Graph-Free Behavioral Interaction-Aware Gradient Boosting Framework for Fraud Detection in Large-Scale Payment Systems

2026 · Applied Sciences

Detecting fraudulent and anomalous transactions in large-scale digital payment systems is significantly challenging due to severe class imbalance and the fact that transactional risk is tightly coupled to the historical interactions and behaviors of transacting …