A general Bayesian bootstrap for censored data based on the beta-Stacy process
Abstract
We introduce a novel procedure to perform Bayesian non-parametric inference with right-censored data, the \emph{beta-Stacy bootstrap}. This approximates the posterior law of summaries of the survival distribution (e.g. the mean survival time). More precisely, our procedure approximates the joint posterior law of functionals of the beta-Stacy process, a non-parametric process prior that generalizes the Dirichlet process and that is widely used in survival analysis. The beta-Stacy bootstrap generalizes and unifies other common Bayesian bootstraps for complete or censored data based on non-parametric priors. It is defined by an exact sampling algorithm that does not require tuning of Markov Chain Monte Carlo steps. We illustrate the beta-Stacy bootstrap by analyzing survival data from a real clinical trial.
Cite
@article{arxiv.2002.04081,
title = {A general Bayesian bootstrap for censored data based on the beta-Stacy process},
author = {Andrea Arfè and Pietro Muliere},
journal= {arXiv preprint arXiv:2002.04081},
year = {2021}
}