F1_Score

Last updated May 5, 2022 Edit Source

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• F1 score

Tags: #F1Score

• The traditional F-measure or balanced F-score (F₁ score) is the Harmonic_Mean-调和平均数 of Precision Recall:

$$F_{1}=\frac{2}{\text { recall }^{-1}+\text { precision }^{-1}}=2 \cdot \frac{\text { precision } \cdot \text { recall }}{\text { precision }+\text { recall }}=\frac{\text { tp }}{t p+\frac{1}{2}(\mathrm{fp}+\mathrm{fn})}$$