一圖一公式搞懂：準確率(accuracy) vs 精確率(precision) vs 召回率(recall)

準確率(accuracy) = 預測對的/所有 = T P + T N T P + F N + F P + T N \frac{TP+TN}{TP+FN+FP+TN} % TP+FN+FP+TNTP+TN​ 精確率(precision) = T P T P + F P \frac{TP}{TP+FP} % TP+FPTP​ 召回率(recall) = T P T P + F N \frac{TP}

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