如果担心 ReLU 死神经元，可尝试 Leaky ReLU 或 ELU
Answer (Playground):
，更多细节参见safew官方下载
优势：时间复杂度O(n+k)，k为数据范围
（三）在当地有常住户口和固定住所；
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· 孙亮 · 来源：user资讯