Metrics 评估指标

准确性 Accuracy

Acc. = (TP + TN)/(TP + FP + TN + FN)

精确性 Precision or Positive Predictive Value (PPV)

PPV = TP / (TP + FP)

召回率/敏感性 Sensitivity, Recall, or True Positive Rate (TPR)

TPR = TP / (TP + FN)

特异性/选择性 Specificity, Selectivity, or True Negative Rate (TNR)

TNR = TN / (TN + FP)

Negative Predictive Value (NPV)

NPV = TN / (TN + FN)

F1-score (F-score)

F-score = 2 * Prec. * Recall / (Prec. + Recall)

Dice Score (DSC)

DSC = $2|X\cap Y|/(|X|+|Y|)$ = 2TP /(2TP + FP + FN)

Summary