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MC Stan
@mc-stan.org
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Expressive probabilistic programming language for writing statistical models. Fast Bayesian inference. Interfaces for Python, Julia, R, and the Unix shell. A rich ecosystem of tools for validation and visualization. Home https://mc-stan.org/
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avehtari.bsky.social
Aki Vehtari @avehtari.bsky.social · Sep 3
bayesplot 1.14.0 CRAN release mc-stan.org/bayesplot/ with contributions from @tjmahr.com, Behram Ulukır, and @teemusailynoja.bsky.social

My favorite new feature is the discrete style ppc_rootogram() as proposed in teemusailynoja.github.io/visual-predi... and shown below

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A discrete rootgram plot. The unmodified counts are displayed on the vertical axis, while using square root scaling for the axis, thus enabling direct reading of the count frequencies. The predictions are displayed as light blue points and interval lines. The observations are overlaid with darker points, except the observations outside the predictive credible intervals are highlighted in red.
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Reposted by MC Stan
avehtari.bsky.social
Aki Vehtari @avehtari.bsky.social · Sep 2
Stan / CmdStan 2.37 release!
blog.mc-stan.org/2025/09/02/r...
- sum_to_zero_matrix type sums to zero across both rows and columns
- simplex and *_stochastic_matrix types should be now faster and more stable
- new functions exposing the built-in constraint implementations
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Release of CmdStan 2.37
We are very happy to announce that the 2.37.0 release of CmdStan is now available on Github! As usual, the release of CmdStan is accompanied by new releases of Stan Math, core Stan, and Stanc3. Thi…
blog.mc-stan.org
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mc-stan.org
MC Stan @mc-stan.org · 21d
MC Stan is here! Follow for the latest Stan news, and tag if you want us to repost your posts about new papers, packages, courses, etc. about Stan
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