stan-dev / stan-dev/docs

fix unit vector transform details in reference manual

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bug
Dominant language
TeX
Stars
43
Forks
133
Avg merge
11h 32m
Merged PRs (30d)
4

Description

Summary:

The description of the unit vector transform isn't accurate as written in the Reference Manual chapter on constraining transforms. There's no Jacobian determinant involved, just a density on auxiliary parameters.

Current Version:

v2.18.0

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start in the Reference Manual chapter on constraining transforms and locate the unit vector transform description. Check the surrounding explanation against the issue's distinction between a Jacobian determinant and a density on auxiliary parameters; done means the manual accurately describes the transform without introducing a Jacobian determinant.

Written by the indexing model from the issue text.

Assessment

Tech stack
tex
Domain
documentation
Issue type
Documentation
Difficulty
2/5
Estimated time
1-3 hours
Activity status
Stale
Clarity
Clearly specified
Newbie friendliness
48/100

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