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bivariate normal cdf

15

#### Summary: Add a function to compute the bivariate normal cdf. #### Description: For size 2 vectors `y` and `mu` and 2 x 2 covariance matrix `Sigma`, compute ``` bivar_normal_cdf(y,...

bob-carpenter

#### Summary: stan::io reimplements its own versions of ordered_free (https://github.com/stan-dev/stan/blob/develop/src/stan/io/writer.hpp#L211) and positive_ordered_free (https://github.com/stan-dev/stan/blob/develop/src/stan/io/writer.hpp#L237) instead of using the stuff in the math library I assigned it to you @syclik to evaluate...

bbbales2

support arbitrary data type in function block's function signatures

7

#### Summary: support arbitrary type in external C++ code so `user_header.hpp` can provide higher-order function support. #### Description: Currently external C++ function in Stan must be declared in `functions` block...

yizhang-yiz

Interfacing with 3rd-party PDE libraries

17

#### 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`. This issue ticket solicits...

yizhang-yiz

#### Summary: This issue complements https://github.com/stan-dev/math/issues/888. #### Description: The "tricky" thing is that, in its current state, the quadratic optimizer takes in four functions as part of its arguments. This...

charlesm93

Consolidate and refactor output from algorithms

5

#### Summary: This issues is to track progress on refactoring outputs. The design and other issues are discussed at forums: http://discourse.mc-stan.org/t/proposal-for-consolidated-output/4263/19 #### Description: This will be detailed once the design...

martinmodrak

Expose Laplace Approximation

2

#### Summary: Complements [issue 755 in the math repo](https://github.com/stan-dev/math/issues/755). #### Description: The goal is to design specialized functions to efficiently compute the posteriors of latent gaussian models. In particular we...

charlesm93

deprecate int_step

2

#### Summary: `int_step(x)` and `step(x)` return different values for 0. The version of `step(x)` matches the BUGS definition and the standard definition of the Heaviside step function. Therefore, it should...

bob-carpenter

#### Summary: No unit test for method `cholesky_corr_unconstrain` in unit tests. #### Description: Need unit tests for all variable types in the Stan language. As part of this issue check...

mitzimorris

Log density with proportionality in ADVI drops more than constant

2

#### Summary: Log density with proportionality in ADVI drops more than constant #### Description: According to stan C++ guidance (https://github.com/stan-dev/stan/wiki/Model-Concept), the log probability of a stan model, with or without...

yao-yl