Imbalanced Classification in Python: SMOTE, ADASYN, and Threshold Tuning Compared (2026)
A practical 2026 guide to imbalanced classification in Python: when to reach for SMOTE, ADASYN, BorderlineSMOTE, class_weight, or threshold tuning — with runnable scikit-learn 1.8 and imbalanced-learn 0.14 code, common pitfalls, and a clear decision framework.