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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Not for the faint of heart, the epic Venusaur, Charizard and Blastoise set features 6,838 pieces and brings three fan favorites to life in one of Lego's largest display sets ever. Each of the figures can be displayed individually or together on the action base, which is full of Easter eggs for fans. The design details on the base are inspired by each of the Pokémon’s biomes (beach, jungle, and volcano) for further depth. All three also have articulated parts, so they can be posed however you desire. The price is also not for the faint of heart. It retails for *gulp* $649.99 and is officially live on the Lego website.。搜狗输入法2026对此有专业解读