Fine-tuning Stacked AEs
From Ufldl
(→Recap of the Backpropagation Algorithm) |
(→Recap of the Backpropagation Algorithm) |
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| Line 14: | Line 14: | ||
::<math>\begin{align} | ::<math>\begin{align} | ||
\delta^{(n_l)} | \delta^{(n_l)} | ||
| - | = - (\nabla_{a^{ | + | = - (\nabla_{a^{n_l}}J) \bullet f'(z^{(n_l)}) |
\end{align}</math> | \end{align}</math> | ||
: 3. For <math>\textstyle l = n_l-1, n_l-2, n_l-3, \ldots, 2</math> | : 3. For <math>\textstyle l = n_l-1, n_l-2, n_l-3, \ldots, 2</math> | ||
