更改

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\begin{aligned}

\begin{aligned}

{EI} &=\frac{1}{N}\sum_{i=1}^ND_{KL}[W_i||\bar{W} \\  

{EI} &=\frac{1}{N}\sum_{i=1}^ND_{KL}[W_i||\bar{W}] \\  

&= \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(\bar{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(\bar{w_j}) \\  

&=\underbrace{-\langle H(W_i)\rangle}_{确定性项}+\underbrace{H(\bar{W})}_{非简并性项}

&=\underbrace{-\langle H(W_i)\rangle}_{确定性项}+\underbrace{H(\bar{W})}_{非简并性项}