print treepepth, etc. in output of print()
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enhancement
- Dominant language
- R
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Description
We want to include the same diagnostic output "parameters" as in CmdStan, which means adding
So that means adding:
- accept_stat__
- stepsize__
- treedepth__
- n_leapfrog__
- n_divergent__
CmdStan's output looks like:
Mean MCSE StdDev 5% 50% 95% N_Eff N_Eff/s R_hat
lp__ -7.3 3.5e-02 6.9e-01 -8.7e+00 -7.0 -6.7 390 34020 1.00
accept_stat__ 0.64 1.2e-02 3.6e-01 5.1e-03 0.74 1.0 882 76898 1.00
stepsize__ 1.8 7.8e-15 5.6e-15 1.8e+00 1.8 1.8 0.50 44 1.00
treedepth__ 0.076 8.6e-03 2.7e-01 0.0e+00 0.00 1.0 942 82167 1.00
n_leapfrog__ 2.7 4.9e-02 1.3e+00 1.0 3.0 3.0 716 65090 1.0e+00
n_divergent__ 0.00 0.0e+00 0.0e+00 0.0e+00 0.00 0.00 1000 90909 1.00
theta 0.25 4.2e-03 1.2e-01 9.0e-02 0.23 0.47 827 72146 1.00
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start at the RStan print() entry point and trace how the current diagnostic output is assembled, using the listed CmdStan output as the reference. Check for existing print-related tests; done means the five diagnostics—accept_stat__, stepsize__, treedepth__, n_leapfrog__, and n_divergent__—appear in the output with the existing summary format.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- r
- Domain
- data
- Issue type
- Feature
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100