| BIC_PFP | Selecting Tuning Parameter for Factor Adjusted-Pairwise Fusion Penalty (FA-PFP) Method via corresponding BIC |
| BIC_SILFS | Selecting Tuning Parameter for SILFS Method via corresponding BIC |
| DCADMM_iter_l1 | SILFS-Based Subgroup Identification and Variable Selection Optimized by DC-ADMM under the L1 Distance |
| DCADMM_iter_l2 | SILFS-Based Subgroup Identification and Variable Selection Optimized by DC-ADMM under the L2 Distance |
| FA_PFP | Factor Adjusted-Pairwise Fusion Penalty (FA-PFP) Method for Subgroup Identification and Variable Selection |
| INIT | Initialization Function for the Intercept Parameter |
| SCAR | Standard Center Augmented Regularization (S-CAR) Method for Subgroup Identification and Variable Selection |
| SILFS | SILFS-Based Subgroup Identification and Variable Selection Optimized by Coordinate Descent under the L2 Distance |