Search Results for author: Richard Nickl

Found 1 papers, 0 papers with code

On free energy barriers in Gaussian priors and failure of cold start MCMC for high-dimensional unimodal distributions

no code implementations5 Sep 2022 Afonso S. Bandeira, Antoine Maillard, Richard Nickl, Sven Wang

We exhibit examples of high-dimensional unimodal posterior distributions arising in non-linear regression models with Gaussian process priors for which MCMC methods can take an exponential run-time to enter the regions where the bulk of the posterior measure concentrates.

regression

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