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{EI} &=\frac{1}{N}\sum_{i=1}^ND_{KL}[W_i^{out}||<W_i^{out}>] \\
{EI} &=\frac{1}{N}\sum_{i=1}^ND_{KL}[W_i^{out}||<W_i^{out}>] \\
&= \frac{1}{N}\sum_{i=1}^N\sum_{j=1}^Nw_{ij}\log_2(w_{ij})-\frac{1}{N}\sum_{i=1}^N\sum_{j=1}^Nw_{ij}\log_2(W_j) \\
&= \frac{1}{N}\sum_{i=1}^N\sum_{j=1}^Nw_{ij}\log_2(w_{ij})-\frac{1}{N}\sum_{i=1}^N\sum_{j=1}^Nw_{ij}\log_2(W_j) \\
&=\underbrace{-\langle H(W_i^{out})\rangle}_{确定性项}+\underbrace{H(<W_i^{out}>)}_{非简并性项}
&=\underbrace{-\langle <H(W_i^{out})>\rangle}_{确定性项}+\underbrace{H(<W_i^{out}>)}_{非简并性项}
\end{aligned}
\end{aligned}