| beta_AD | Caculate the estimators of beta on the A-opt and D-opt |
| beta_cor | Caculate the estimator of beta on the COR |
| eerr | Generate Data with Elliptically Distributed Covariates |
| ELIC | A General Length and Information Criterion (LIC) Function |
| LICnew | Calculate the LIC estimator based on A-optimal and D-optimal criterion |