stan-dev / stan-dev/stan

diagnostic mode without Jacobian

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algorithm feature
Dominant language
C++
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Description

As of now, I don't think there's a way to turn off the Jacobian adjustment when reporting in diagnostic mode. There should be.

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First steps

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  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

The issue mentions diagnostic mode and the Jacobian adjustment but names no file, test, or entry point. Start by locating the diagnostic-mode reporting path and how the Jacobian adjustment is applied. Done means diagnostic reporting can explicitly omit that adjustment, with behavior covered by an appropriate test.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
backend
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
20/100

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