model

model

def find_best_threshold(threshold, fpr, tpr):
    t = threshold[np.argmax(tpr*(1-fpr))]     
    print("the maximum value of tpr*(1-fpr)", max(tpr*(1-fpr)), "for threshold", np.round(t,3))
    return t

def predict_with_best_t(proba, threshold):
    predictions = []
    for i in proba:                              
        if i>=threshold:
            predictions.append(1)
        else:
            predictions.append(0)
    return predictions
best_t = find_best_threshold(tr_thresholds, train_fpr, train_tpr)
best_t_test=find_best_threshold(te_thresholds, test_fpr, test_tpr)


the maximum value of tpr*(1-fpr) 0.9782132727235511 for threshold 0.298
the maximum value of tpr*(1-fpr) 0.9702060771618405 for threshold 0.331