JuliaDiff / JuliaDiff/ChainRules.jl
Returning `Broadcasted` cotangents for `Broadcasted` arguments?
Nobody has claimed this yet.
- Dominant language
- Julia
- Stars
- 475
- Forks
- 98
- PR merge metrics
- No merged PRs in 30d
Description
More of a question on whether this makes sense than a feature request. I could see it replacing or complementing @thunk(<eager broadcast> of unbroadcast(...)) for rules such as https://github.com/JuliaDiff/ChainRules.jl/blob/v1.48.0/src/rulesets/Base/broadcast.jl#L174.
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
Review src/rulesets/Base/broadcast.jl around line 174 and compare the proposed Broadcasted cotangent behavior with the existing thunk/unbroadcast approach. Done means reaching and recording a decision on whether this API change should be pursued, since the issue currently asks a design question rather than specifying an implementation.
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Assessment
- Tech stack
- julia
- Domain
- machine-learning
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100