Stratified Cross-Validation Calculator
K-fold CV with preserved class proportions in each fold
About Stratified Cross-Validation
Stratified k-fold CV ensures each fold has approximately the same class distribution as the full dataset.
When to use:
- Classification problems with imbalanced classes
- Small datasets where random splits may create unrepresentative folds
- When consistent class representation matters
Benefit: Reduces variance in performance estimates compared to regular k-fold CV.