paper

On a generalization of the preconditioned Crank-Nicolson Metropolis algorithm

arXiv:1504.03461 · doi:10.1007/s10208-016-9340-x

Abstract

Metropolis algorithms for approximate sampling of probability measures on infinite dimensional Hilbert spaces are considered and a generalization of the preconditioned Crank-Nicolson (pCN) proposal is introduced. The new proposal is able to incorporate information of the measure of interest. A numerical simulation of a Bayesian inverse problem indicates that a Metropolis algorithm with such a proposal performs independent of the state space dimension and the variance of the observational noise. Moreover, a qualitative convergence result is provided by a comparison argument for spectral gaps. In particular, it is shown that the generalization inherits geometric ergodicity from the Metropolis algorithm with pCN proposal.

40 pages, 3 Figures

References in corpus (2)

Cited by in corpus (24)