Figure 1:

Boxplots of MSE estimated at the 50th quantile of the marginal failure time distribution for the four simulation settings described in Section 5.1. L2 and L2 BJ are the CURE-L₂ algorithms, with BJ referring to the use of the Buckley-James CUT. RSF and CI are the default methods for rfsrc and cforest functions. RSF Opt is the default method for rfsrc with the nodesize parameter tuned. RIST is the recursively imputed survival trees algorithm, and 3 and 6 stand for the minimum number of observed failure times in a terminal node.