Swati Satpute

When Does Cost-Sensitive Weighting Matter? A Classifier-Capacity Anal-ysis for Imbalanced Classification

Class weighting is the most widely used cost-sensitive remedy for class imbalance, and inverse-frequency “balanced” weights are often applied as an unquestioned default. This paper asks whether the choice among competing weighting mechanisms actually matters, and for which classifiers. Seven mechanisms, namely Balanced...