DR_pseudo_outcome_regression
                        Generate oracle prediction function estimates
                        using doubly-robust pseudo-outcome regression
                        with SuperLearner
crossfit_oracle_preds   Generate cross-fitted oracle prediction
                        function estimates
crossfit_surv_preds     Generate cross-fitted conditional survival
                        predictions
currstatCIR             Estimate a survival function under current
                        status sampling
generate_folds          Generate cross-fitting and sample-splitting
                        folds
predict.stackG          Obtain predicted conditional survival and
                        cumulative hazard functions from a global
                        survival stacking object
predict.stackL          Obtain predicted conditional survival function
                        from a local survival stacking object
stackG                  Estimate a conditional survival function using
                        global survival stacking
stackL                  Estimate a conditional survival function via
                        local survival stacking
vim                     Estimate AUC VIM
vim_AUC                 Estimate AUC VIM
vim_accuracy            Estimate classification accuracy VIM
vim_brier               Estimate Brier score VIM
vim_cindex              Estimate concordance index VIM
vim_rsquared            Estimate R-squared (proportion of explained
                        variance) VIM based on event occurrence by a
                        landmark time
vim_survival_time_mse   Estimate restricted predicted survival time MSE
                        VIM
