Andrew Johnson

Allow choice of tau2 estimation method

1

An interesting additional feature could be the ability to use REML estimation to obtain the `tau2` term, which could also allow for additional levels of variance terms for inflating the...

Downstream Deprecated / Expired Syntax

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Opening this issue to track the status of downstream packages. All dependencies have now had PRs submitted or the maintainers notified. ### Status - Patches not yet merged: 23 -...

RStan & StanHeaders Downstream Patching Status

2

I'm consolidating the tables/issues from #1034 and #1046, since they're spread across multiple comments and somewhat buried. Note that these tables/failures should be considered cumulative - any patches needed for...

RStan & expiring deprecations

5

Transferring the discussion [from the forums](https://discourse.mc-stan.org/t/planning-the-2-32-release/30641/23) for visibility. We're approaching the expiration of deprecated syntax (e.g., arrays) before rstan is compatible with the new syntax and downstream packages can update....

virtual declarations missing for `get_constrained_sizedtypes()` and `get_constrained_sizedtypes()` in `model_base`

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#### Summary: `stanc` outputs methods for returning a json-formatted string of the parameter metadata, like the following for the bernoulli model: ```cpp inline std::string get_constrained_sizedtypes() const { return std::string("[{\"name\":\"theta\",\"type\":{\"name\":\"real\"},\"block\":\"parameters\"}]"); }...

Re-Implementation of Hypergeometric PFQ gradient function

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## Summary This PR rewrites the `grad_pFq` function to use a significantly simpler form of the gradient definition (now requiring only one infinite sum instead of two nested ones). The...

Add Hypergeometric 1F0 function and gradients

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## Summary This PR exposes the `hypergeometric_1f0` function from Boost and adds gradients. The gradients for the 1F0 are much simpler than the other hypergeometric series and can be expressed...

Expose integrate_1d variadic signatures

1

## Description Discussed over in the [stanc3 repo](https://github.com/stan-dev/stanc3/issues/1352), `integrate_1d_impl` supports variadic arguments, but this is not exposed by the user-facing `integrate_1d` function. #### Current Version: v4.6.2

Update Normal quantile function with new approximations

3

## Description The R project recently published a vignette covering various approximations for the quantiles of the normal distribution, including for log inputs: https://CRAN.R-project.org/package=DPQ/vignettes/qnorm-asymp.pdf

Add variadic version of `scalar_seq_view`

3

## Description In the [finite-diff framework PR](#2929) (and some other functions that I'm planning), we need to be able to sequentially iterate through each element of all arguments passed to...