Erqi Huang的博客

公式推导皆以分母布局（即分子为行向量或者分母为列向量）, x=[x1x2⋯xn]Tx = \begin{bmatrix} x_{1} x_{2}\cdots x_{n} \end{bmatrix}^Tx=[x1​x2​⋯xn​​]T, ∂y∂x=[∂y∂x]=[∂y∂x1∂y∂x2⋮∂y∂xn]\frac{\partial y}{\partial x} = [\frac{\partial y}{\partial x}] =\begin{bmatrix} \frac{\partial y}{\p.