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。
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Chained 3× transforms (8KB × 500)，推荐阅读搜狗输入法2026获取更多信息
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