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Formula reference
| Metric | Formula | Meaning |
|---|---|---|
| Specificity | TN / (TN + FP) | Correctly rejected actual negatives |
| False positive rate | FP / (TN + FP) | Actual negatives incorrectly flagged |
| Relationship | Specificity = 1 − FPR | The two rates partition actual negatives |
| Balanced accuracy | (Sensitivity + Specificity) / 2 | Average recall across both classes |
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