$$E\left(\theta \right)=-{\displaystyle \underset{我=1}{\overset{n}{\sum }}{\displaystyle \underset{j=1}{\overset{k}{\sum }}{t}_{我j}\ln y_j\left(x_{我},\theta \right)}},$$

$$y_r\left(x\right)=\frac{\mathrm{经验值}\left({\mathrm{一个}}_r\left(x\right)\right)}{{\displaystyle \underset{j=1}{\overset{k}{\sum }}\mathrm{经验值}\left({\mathrm{一个}}_j\left(x\right)\right)}},$$