F1 measures weighted Harmonic Mean of precision and recall to treat Recall Precision Tradeoff Precision and Sensitivity are in a Trade-off relationship, so we use the F1-score. We use it to find a suitable point where both are high. 2×Precision×RecallPrecision+Recall2 \times \frac{Precision \times Recall}{Precision + Recall}2×Precision+RecallPrecision×Recall