See https://colah.github.io/posts/2015-08-Backprop/ 30% 쯤 Derivatives on Computational Graphs
미분,differentiation이 두가지
forward-mode differentiation $\displaystyle \frac{\partial}{\partial X}$
reverse-mode differentiation $\displaystyle \frac{\partial Z}{\partial}$

... forward reverse mode differentiation forward reverse mode differentiation forward reverse mode differentiation

이렇게 forward diff/reverse diff가 서로 편미분,partial_derivative 미분형식,differential_form의 reciprocal ...???

Up: 계산,computation 그래프,graph

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