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Remove step size jittering functionality

1

#### Summary: Remove step size jittering functionality from samplers. #### Description: The HMC sampler allow for the nominal step size to be randomly jittered, in line with advice given in...

betanalpha

#### Summary: Expose and document `normal_sufficient`. #### Description: See stan-dev/math#38.

randommm

Sampler appears to avoid zero in truncated hierarchical priors

7

#### Summary: Samples generated from a simple hierarchical normal prior (no model, just prior) don't agree with the theoretical distribution or those generated numerically near the truncation point (zero) ####...

akerrigan

Stan should accumulate the mean and variance for all unknowns

13

#### Summary: RStan has for a long time calculated the mean for all unknowns, even those that are not returned to R. But this (and the variance) should not be...

bgoodri

Things needed by interfaces for Stan 3.x

2

#### Summary: The class of the C++ model does not have enough functionality for interfaces like RStan and PyStan to implement version 3.x. #### Description: Here are things that I...

bgoodri

Add software regression tests

23

#### Summary: We don't have [software regression tests](https://en.wikipedia.org/wiki/Regression_testing) in place. We should introduce them and test them. #### Description: More accurately, we could use some [characterization tests](https://en.wikipedia.org/wiki/Characterization_test). Here are a...

syclik

access to iteration number and chain id within model

11

Sean O'Riordain suggested on stan-users that it would be useful to be able to access the iteration number in a Stan program so that you could write something like this...

bob-carpenter

more general gamma function

19

I am wanting to use the incomplete gamma function, with a negative shape parameter. This is currently not supported by the relevant boost library function. To get around this, I...

steven-murray

Update tests to use rtools-provided make

1

#### Submission Checklist - [x] Run unit tests: `./runTests.py src/test/unit` - [x] Run cpplint: `make cpplint` - [x] Declare copyright holder and open-source license: see below #### Summary Continuing updates...

andrjohns

report condition number of metric for HMC adaptive samplers

4

#### Summary: Extend the functionality added in https://github.com/stan-dev/stan/pull/3230 to return the Hessian and the condition number of the Hessian at the end of adaptation. #### Description: The Stan User's Guide...

mitzimorris