Why is it that when we calculate partial with respect to w1, we said a1 depends on w1, but a2 doesn’t depend on w2 and a3 doesn’t depend on w3?
motoole2
$a_2$ does depend on $w_2$, and $a_3$ does depend on $w_3$! See this slide for example.
The reason that the calculation for $dL / dw_1$ does not include a $d / dw_2$ or $d / dw_3$ term is because the value of $w_2$ and $w_3$ does not depend on $w_1$. Only the other terms shown in this chain depend on the value of $w_1$.
Why is it that when we calculate partial with respect to w1, we said a1 depends on w1, but a2 doesn’t depend on w2 and a3 doesn’t depend on w3?
$a_2$ does depend on $w_2$, and $a_3$ does depend on $w_3$! See this slide for example.
The reason that the calculation for $dL / dw_1$ does not include a $d / dw_2$ or $d / dw_3$ term is because the value of $w_2$ and $w_3$ does not depend on $w_1$. Only the other terms shown in this chain depend on the value of $w_1$.