Importance sampling type estimators based on approximate marginal Markov chain Monte Carlo and exact approximation

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• Matti Vihola (University of Jyväskylä )
• Thursday 06 July 2017, 13:30-14:15
• Seminar Room 1, Newton Institute.

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SINW01 - Scalable statistical inference

We consider an importance sampling (IS) type estimator based on Markov chain Monte Carlo (MCMC) which targets an approximate marginal distribution. The IS approach, based on unbiased estimators, is consistent, and provides a natural alternative to delayed acceptance (DA) pseudo-marginal MCMC . The IS approach enjoys many benefits against DA, including a straightforward parallelisation. We focus on a Bayesian latent variable model setting, where the MCMC operates on the hyperparameters, and the latent variable distributions are approximated. 

This talk is part of the Isaac Newton Institute Seminar Series series.

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