本文介绍机器学习中的二分类性能评估指标Precision, Recall, Sensitivity, Specificity, Accuracy, FNR, FPR, TNR, TPR, F1 Score, Balanced F Score基本含义,给出公式和具体算例,并作简要分析。 基础定义 评估指标 预测结...
(receiver operating characteristic curve,简称ROC曲线),又称为感受性曲线(sensitivity curve),用来...
TN = TN.astype(float)# Sensitivity, hit rate, recall, or true positive rateTPR = TP/(TP+FN)# Specificity or true negative rateTNR = TN/(TN+FP)# Precision or positive predictive valuePPV = TP/(TP+FP)# Negative predictive valueNPV = TN/(TN+FN)# Fall out or false positive rateFPR ...
简称ROC曲线),又称为感受性曲线(sensitivity curve),AUC(Area Under Curve)是ROC曲线下的面积。