Daniel Lee

Clean up code: `.str().length()`

13

#### Summary: There are many instances of code that looks like: ``` if (msg.str().length() > 0) logger.info(msg); ``` We should either: - have the info() method ignore empty messages in...

Redesign loggers

1

#### Summary: From @bob-carpenter > Our loggers should just take these, as in: > > logger.info() > logger.info("Gradient evaluation took ", deltaT, " seconds"); #### Description: Our loggers were introduced...

#### Summary: @betanalpha fixed #1972. We should add a test so it doesn't recur. (Thanks, @YannickJadoul) #### Description: This model did not sample correctly in v2.10: ``` stan parameters {...

Add exit() to the language

2

#### Summary: Add an `exit()` function to the language. We could also call it `error()`, `fatal()`, or `fatal_error()`. #### Description: Currently, we have `reject()` in the Stan language. Using `reject()`...

#### Summary: The help option is slightly out-of-date. #### Description: It currently points to the Math library repo at the end of the help message. That should point to Stan....

Update gaussian_dlm_obs_log to use LDLT

3

_From @mbrubake on February 18, 2014 22:44_ Currently still uses inverse_spd/log_determinant_spd which may be less than optimal for large systems. _Copied from original issue: stan-dev/stan#574_

_From @bob-carpenter on February 4, 2015 1:49_ Right now, when external programs use numeric_limits, new `vari` instances are created in the memory arena. This is done by some routines in...

_From @bob-carpenter on November 11, 2014 16:31_ - [ ] density - [ ] `dirichlet_multinomial_lpdf` function - [ ] distribution tests - [ ] model instantiation tests - [ ]...

Analytic evolve functions (ODE)

1

_From @betanalpha on May 21, 2015 12:55_ In ODE models some components can be solved analytically such that some state components are given in closed form and some need to...

_From @bob-carpenter on June 8, 2015 19:34_ Request from Slawek Smyl via stan-users group: "... please add the Skew Student distribution - it would be very general and useful." The...