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#### Summary:
Allow 3rd-party PDE(partial differential equation) libraries to be used to perform inference that involve PDEs.
#### Description:
The design involves `cmdstan`, `stan`, and `math…
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## Description
When solving an ODE using `ode_rk45` which takes the form
$\left.u^{\prime}=\frac{e^{-\lambda u^2}}{\lambda u\left(u^{-2}-2 \lambda\right)-u^{-3}}\left[\frac{3}{2}\Omega_m(1+z)^2+2 \O…
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#### Summary:
Defining a size 0 correlation matrix leads to std::bad_alloc in rstan. This is related to #2588, where it is suggested that corr_matrix and related types should be able to work for size…
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#### Summary:
The covariance estimation currently used to construct a dense mass matrix is yielding sufficiently poor results that the resulting chains go crazy.
#### Description:
It looks like the…
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This is not a priority issue as we don't currently have any plans to publish to CRAN (at least we can't until cmdstanr does) but if we ever did want to publish we can't unless the total run time of ou…
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#### Summary:
Implement the automatic selection between metric=dense_e and metric=diag_e as described in: https://arxiv.org/abs/1905.11916
#### Description
It's not always obvious when the di…
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#### Summary:
The CmdStan method `generate_quantities` doesn't directly provide a way to summarize the output csv file;
either modify `stansummary` to recognize generate quantities output, or create…
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```julia
julia> using StanSample, InferenceObjects
julia> model = """
parameters {
matrix[2, 3] x;
}
model {
for (i in 1:2)
x[i,:] ~ std_nor…
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Reprex:
```
mod = brm(mpg ~ 0 + Intercept + cyl + disp + hp, data = mtcars, backend = "cmdstan", refresh = 0)
Warning message:
Model has no intercept. VIFs may not be sensible.
High Correlat…