embedded.blocks         Embedded blocks regression
ensemble.blocks         Ensemble blocks regression
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
