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Non-reversible guided Metropolis kernel

Published online by Cambridge University Press:  12 April 2023

Kengo Kamatani*
Affiliation:
The Institute of Statistical Mathematics
Xiaolin Song*
Affiliation:
Osaka University
*
*Postal address: 10-3 Midori-cho, Tachikawa Tokyo 190-8562, Japan. Email address: kamatani@ism.ac.jp
**Postal address: Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama-cho, Toyonaka, Osaka, Japan. Email address: songxl@sigmath.es.osaka-u.ac.jp

Abstract

We construct a class of non-reversible Metropolis kernels as a multivariate extension of the guided-walk kernel proposed by Gustafson (Statist. Comput. 8, 1998). The main idea of our method is to introduce a projection that maps a state space to a totally ordered group. By using Haar measure, we construct a novel Markov kernel termed the Haar mixture kernel, which is of interest in its own right. This is achieved by inducing a topological structure to the totally ordered group. Our proposed method, the $\Delta$-guided Metropolis–Haar kernel, is constructed by using the Haar mixture kernel as a proposal kernel. The proposed non-reversible kernel is at least 10 times better than the random-walk Metropolis kernel and Hamiltonian Monte Carlo kernel for the logistic regression and a discretely observed stochastic process in terms of effective sample size per second.

Information

Type
Original Article
Copyright
© The Author(s), 2023. Published by Cambridge University Press on behalf of Applied Probability Trust

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