如果不确定用哪个激活函数，隐藏层可以先用 ReLU，输出层按任务选择；训练中注意梯度情况，如果梯度消失或爆炸，再考虑替换或调整激活函数。
Credit: Samsung
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雖然大法官把這個棘手的退款問題留給下級法院處理，但布雷特·卡瓦諾（Brett Kavanaugh）在不同意見書中警告，整個過程很可能會是一團「混亂」。