Efficient Bayesian inference for stochastic volatility models with ensemble MCMC methods
Computation
2014-12-10 v1
Abstract
In this paper, we introduce efficient ensemble Markov Chain Monte Carlo (MCMC) sampling methods for Bayesian computations in the univariate stochastic volatility model. We compare the performance of our ensemble MCMC methods with an improved version of a recent sampler of Kastner and Fruwirth-Schnatter (2014). We show that ensemble samplers are more efficient than this state of the art sampler by a factor of about 3.1, on a data set simulated from the stochastic volatility model. This performance gain is achieved without the ensemble MCMC sampler relying on the assumption that the latent process is linear and Gaussian, unlike the sampler of Kastner and Fruwirth-Schnatter.
Cite
@article{arxiv.1412.3013,
title = {Efficient Bayesian inference for stochastic volatility models with ensemble MCMC methods},
author = {Alexander Y. Shestopaloff and Radford M. Neal},
journal= {arXiv preprint arXiv:1412.3013},
year = {2014}
}