If subset is not specified, generates the following
plots (going from top to bottom, left to right):
Forest estimated survival function for each individual (thick
red line is overall ensemble survival, thick green line is
Nelson-Aalen estimator).
Brier score (0=perfect, 1=poor, and 0.25=guessing) stratified
by ensemble mortality. Based on the IPCW method described in Gerds
et al. (2006). Stratification is into 4 groups corresponding to the
0-25, 25-50, 50-75 and 75-100 percentile values of mortality. Red
line is the overall (non-stratified) Brier score.
Continuous rank probability score (CRPS) equal to the
integrated Brier score divided by time.
Plot of mortality of each individual versus observed time.
Points in blue correspond to events, black points are censored
observations.
When subset is specified, then for each individual in
subset, the following three plots are generated:
Forest estimated survival function.
Forest estimated cumulative hazard function (CHF) (displayed
using black lines). Blue lines are the CHF from the estimated hazard
function.
Note that when the object x
is of class (rfsrc, predict)
not all plots will be produced. In particular, Brier scores are not
calculated.
Only applies to survival families. In particular, fails for competing
risk analyses. Use plot.competing.risk
in such cases.
Whenever possible, out-of-bag (OOB) values are used.