Figure 2.

Boxplots for Simulation 1 for 30% censoring. Lower values imply better performance for all measures except PPS, where higher is better. IPCW is the IPCW tree building method, Exp is the default exponential rpart method, and Tree, Cox, RF, Weibull, and Log Log are the doubly robust trees fit using an augmentation term in which the required conditional expectation term is respectively estimated using a survival tree, Cox model, survival forest, and a Weibull and log-logistic parametric AFT model (see Section 3.2.2).