| embedded.blocks | Embedded blocks regression | 
| ensemble.blocks | Ensemble blocks regression | 
| heterogeneity | Testing heterogeneity of the LGD rating model | 
| homogeneity | Testing homogeneity of the LGD rating model | 
| interaction.transformer | Extract risk factors interaction from decision tree | 
| kfold.idx | Indices for K-fold validation | 
| kfold.vld | K-fold model cross-validation | 
| lgd.ds.c | Synthetic modeling dataset | 
| r.squared | Coefficient of determination | 
| rf.interaction.transformer | Extract interactions from random forest | 
| sc.merge | Special case merging procedure | 
| staged.blocks | Staged blocks regression | 
| stepFWD | Customized stepwise (OLS & fractional logistic) regression with p-value and trend check | 
| stepRPC | Stepwise (OLS & fractional logistic) regression based on risk profile concept |