Credit Card Fraud Detection
Built and benchmarked an end-to-end fraud detection pipeline in Python using Scikit-learn, XGBoost, and imbalanced-learn on a severely imbalanced dataset of more than 284,000 records, with 0.17% fraudulent transactions. Achieved a best test ROC-AUC of 0.98 with 92% sensitivity using XGBoost on undersampled data and compared four machine learning algorithms.