# 深度学习(1)Python手写Numpy神经网络

Posted by qingdujun on 2019-06-09

• $W=\left[w{1}, w{2} \dots w_{m}\right]$
• $X=\left[x^{(1)}, x^{(2)} \dots x^{(m)}\right]$
• $B=\left[b, b, \dots b\right]$
• $Z=\left[z^{(1)}, z^{(2)} \dots z^{(m)}\right]$
• $A=\left[a^{(1)}, a^{(2)} \dots a^{(m)}\right]$
• $Y=\left[y^{(1)}, y^{(2)} \dots y^{(m)}\right]$
• $dW=\left[dw{1}, dw{2} \dots dw_{m}\right]^T$

# 反向传播

Reference:

Neural Networks and Deep Learning