vault backup: 2026-05-07 23:03:06
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@@ -78,7 +78,7 @@ $$
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Введём локальную ошибку выходного нейрона:
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$$
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\delta_l^{(2)}=(y_l-d_l)F'(S_l^{(2)})
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\delta_l^{(2)}=(y_l-d_l)*F'(S_l^{(2)})
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$$
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Тогда:
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@@ -140,7 +140,7 @@ $$
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$$
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\frac{\partial y_l}{\partial u_i}
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=
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F'(S_l^{(2)})w_{li}^{(2)}
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F'(S_l^{(2)})*w_{li}^{(2)}
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$$
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Производная выхода скрытого нейрона $u_i$ по весу $w_{ij}^{(1)}$:
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@@ -164,7 +164,7 @@ $$
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$$
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\frac{\partial u_i}{\partial w_{ij}^{(1)}}
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=
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F'(S_i^{(1)})x_j
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F'(S_i^{(1)})*x_j
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$$
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Собираем:
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@@ -172,10 +172,10 @@ $$
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$$
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\frac{\partial E}{\partial w_{ij}^{(1)}} =
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\sum\limits_{l=1}^{m}
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(y_l-d_l)
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F'(S_l^{(2)})
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w_{li}^{(2)}
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F'(S_i^{(1)})
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(y_l-d_l)*
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F'(S_l^{(2)})*
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w_{li}^{(2)}*
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F'(S_i^{(1)})*
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x_j
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$$
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@@ -185,9 +185,9 @@ $$
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\delta_i^{(1)}
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=
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\sum\limits_{l=1}^{m}
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(y_l-d_l)
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F'(S_l^{(2)})
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w_{li}^{(2)}
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(y_l-d_l)*
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F'(S_l^{(2)})*
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w_{li}^{(2)}*
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F'(S_i^{(1)})
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$$
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@@ -196,9 +196,9 @@ $$
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$$
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\delta_i^{(1)}
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=
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F'(S_i^{(1)})
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F'(S_i^{(1)})*
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\sum\limits_{l=1}^{m}
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\delta_l^{(2)}
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\delta_l^{(2)}*
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w_{li}^{(2)}
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$$
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