Tag
class-imbalance
- Nov 4, 2025 Class Imbalance, Class Priors, and Cost-Sensitive Thresholds Why resampling and thresholding both leave the fitted probabilities unchanged or wrong, how a prior shift translates into an intercept adjustment, and where the expected-cost optimum sits. machine learning
- May 4, 2025 ROC-AUC and PR-AUC Under Class Imbalance What each area actually integrates, why ROC-AUC stays flat as positives become rare, and the conditions under which the two order two models differently. machine learning