水下机器人视觉_4_反向传播

Posted on 2019-09-21 In 机器学习 Views: 2
Symbols count in article: 153 Reading time ≈ 1 mins.

sigmoid 函数的导数计算:

由于没太看懂 PPT 内容，最后还是参考 https://www.cnblogs.com/charlotte77/p/5629865.html

简而言之，信号前向传播，权重的更新反向传播；反向传播算法利用链式法则，来获得总误差值对每个权重的偏导数，是对梯度下降算法中求偏导数的具体实现

Thank you for your reward !

Post author: DiDong
Post link: https://didongdongdi.github.io/2019/09/21 / 水下机器人视觉 - 4 - 反向传播 /
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