tensorflow2.0深度学习 keras AUC性能评估 借鉴:keras中自定义验证集的性能评估(ROC,AUC) 1. AUC 计算公式 from tensorflow.keras import backend as K # AUC for a binary classifier def auc(y_true, y_pred): ptas = tf.stack([binary_PTA(y_true,y_pred,k) for k in np.linspace(0, 1, 1000)],axis=0) pfas = tf.stack([binary_PFA(y_true,y_pred,...