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pytorch 参数初始化
2022-07-07 04:11:00 【Melody2050】
可行的initializer有kaiming_normal、xavier_normal。
参考博客 weight-initialization-in-neural-networks-a-journey-from-the-basics-to-kaiming
梯度爆炸与梯度消失
反向传播
根据梯度的链式反向传播,当深层的梯度要向浅层传播时,会乘以该层的梯度。我们参考 深度前馈网络与Xavier初始化原理 进行举例。假设有一个线性连接层后接激活层,如下图:
- 线性连接层f2的输入为x,输出为z。即 z = f 2
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