| delete_rect | rectangular hole in image | 
| inpainting | image recovery using Lasso regression | 
| k_fold_cross | k_fold_cross | 
| lasso_fista | Lasso regression with fixed step with FISTA algorithm | 
| lasso_fista_back | Lasso regression with backtraking line research with FISTA algorithm | 
| lasso_ista | Lasso regression with fixed step with ISTA algorithm | 
| lasso_ista_back | Lasso regression with backtraking line research | 
| lasso_multi | Lasso logistic regression for multinomial response variable with fixed step | 
| lasso_multi_back | Lasso regression with backtraking line research for multinomial response variable | 
| l_CV | K-Fold Cross validation for L1/L2 regression | 
| ols | Ordinary Least Square regression | 
| ols_KCV | K-Fold Cross Validation for OLS | 
| ridge | Ridge regression | 
| softmax | Softmax function for multinomial response variable |