stan-dev / stan-dev/rstan

New R-hat, ESS and quantile-MCSE functions

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#617 17 comments 0 reactions 2 assignees View on GitHub

@avehtari is already working on this.

Since Mar 20, 2019.

enhancement feature
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R
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Description

Summary:

Add new R-hat, ESS and quantile-MCSE described in

  • Aki Vehtari, Andrew Gelman, Daniel Simpson, Bob Carpenter, Paul-Christian Bürkner (2019): Rank-normalization, folding, and localization: An improved R-hat for assessing convergence of MCMC. arXiv preprint arXiv:1903.08008.
Description:

The reference implementation is available in monitornew.R

  • There is a new version of monitor(), but for backward compatibility it would be better to use different name.
  • monitor_extra() is needed only for the supporting experiments and should not to be implemented in rstan.
  • A bit more modularity in the code would be good, so that there would be separate functions for
    • R-hat
    • bulk-ESS
    • tail-ESS
    • quantile-ESS
    • mean-ESS
    • sd-ESS
    • quantile-MCSE
    • mean-MCSE
    • sd-MCSE

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