JuliaDiff / JuliaDiff/ChainRulesCore.jl
Tangents vs Cotangents
Open
Nobody has claimed this yet.
help wanted
speculative
- Dominant language
- Julia
- Stars
- 267
- Forks
- 66
- PR merge metrics
- No merged PRs in 30d
Description
We don't currently maintain a distinction between tangents and cotangents in ChainRules. I've yet to come up with an example where it matters whether or not you do, but it would be good to understand this sooner rather than later.
Contributor guide
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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
The issue does not name any files, tests, or entry points. First identify a concrete example where distinguishing tangents from cotangents matters and define the intended ChainRules semantics; completion would require an agreed design and corresponding implementation scope.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- julia
- Domain
- backend-api-design
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 20/100