使用Latex对公式进行标号并对齐

在公式后面空一格并添加 \tag{number}

ai,t=exp(hTtWbbi)∑jexp(hTtWbbj)(1) $$\begin{array}{}\text{(1)}& a_{i,t}=\frac{exp(h_t^T{W}_b{b}_i)}{\underset{j}{\sum }exp(h_t^T{W}_b{b}_j)}\end{array}$$

ct=∑i=1,…,|x|ai,tbi(2) $$\begin{array}{}\text{(2)}& c_t=\underset{i=1,\dots ,|x|}{\sum }{a}_{i,t}{b}_i\end{array}$$

$$ a_{i,t} = \frac{exp(h_t^TW_bb_i)}{\sum_jexp(h_t^TW_bb_j)} \tag{1}$$
$$c_t = \sum_{i=1,…,|x|}a_{i,t}b_i \tag{2}$$