if elif sentence logic question

[PreWisdom]

I find a question in SAMed/datasets/dataset_synapse.py line 38~40: if random.random() > 0.5: image, label = random_rot_flip(image, label) elif random.random() > 0.5: image, label = random_rotate(image, label) is that a logic problem or my misunderstanding?

[PreWisdom]

另外我还想请教一个问题，如果我做的是二分类分割，num_classes应该设置成1还是2？无论设置成1还是2都没有效果，预测出来的结果全是背景，没有目标前景

[Saillxl]

把学习率调到0.001试试