True and predicted survival probability curves. Survival probability curves for the observed log survival time and predicted log survival time (using H-RVM) of the patients in the test data with minimum mean square prediction error. The solid lines are the Kaplan-Meier estimates of survival probabilities for the predicted (in blue) and observed (in red) log survival times in the test data. The dotted lines indicate point-wise 95% confidence intervals for the survival probabilities. The p-value of the log rank test is 0.0964.