:<math> C(\theta)=\sum_{\alpha=1}^D\sum_{i=1}^ {m_\alpha}\left(\frac{y_\alpha(t_{\alpha i},\theta)-d_{\alpha i}}{\sigma_{\alpha i}}\right)^2</math> | :<math> C(\theta)=\sum_{\alpha=1}^D\sum_{i=1}^ {m_\alpha}\left(\frac{y_\alpha(t_{\alpha i},\theta)-d_{\alpha i}}{\sigma_{\alpha i}}\right)^2</math> |