Offset issues
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- Dominant language
- R
- Stars
- 114
- Forks
- 31
- PR merge metrics
- No merged PRs in 30d
Description
There are two rstanarm issues related to offsets (stan-dev/rstanarm#541 and stan-dev/rstanarm#542) which require a workaround in projpred until they are resolved in rstanarm. I can try to create a PR for these workarounds in projpred, but before doing so, I want to make sure I understand the key idea of handling offsets in projpred: Is it correct that <refmod_object>$ref_predfun() is supposed to not take the offsets into account (or, equivalently, use offsets which are all equal to zero) so that the submodels (which basically fit to <refmod_object>$mu which in turn is based on <refmod_object>$ref_predfun()) may be fitted without any offsets?
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Read rstanarm issues #541 and #542 first, then inspect the projpred handling around <refmod_object>$ref_predfun() and <refmod_object>$mu. Determine whether offsets should be excluded or set to zero for submodel fitting, and document the agreed workaround before attempting a PR.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- r
- Domain
- machine-learning
- Issue type
- Bug
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 20/100