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Explain why R-hat and ESS do not apply to the sampler diagnostics - #1000

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bob-carpenter merged 1 commit into
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document-sampler-diagnostics-convergence
Oct 26, 2026
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bob-carpenter merged 1 commit into
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document-sampler-diagnostics-convergence

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@avehtari

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Submission Checklist

  • Builds locally (quarto render analysis.qmd --to html, Quarto 1.8.26)
  • New functions marked with <<{ since VERSION }>> (no new functions)
  • Declare copyright holder and open-source license: see below

Summary

@bob-carpenter asked for this text in the discussion of stan-dev/cmdstan#1363, which removes MCSE, ESS, and R-hat from the sampler diagnostic rows of stansummary.

I'm not sure if the placement is the best, but the contents of the paragraph is the same what I wrote in stan-dev/cmdstan#1363 (just a bit more polished sentences).

  • reference-manual/analysis.qmd, section "Convergence is global": adds the subsection "Sampler diagnostics".

Copyright and Licensing

Please list the copyright holder for the work you are submitting (this will be you or your assignee, such as a university or company):

Aalto University

By submitting this pull request, the copyright holder is agreeing to license the submitted work under the following licenses:

This PR was assisted by Claude

@bob-carpenter bob-carpenter left a comment

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Thanks much for adding. Looks great.

@bob-carpenter
bob-carpenter merged commit 52e020e into master Oct 26, 2026
@WardBrian
WardBrian deleted the document-sampler-diagnostics-convergence branch October 26, 2026 21:03
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2 participants