JuliaDiff / JuliaDiff/ReverseDiff.jl
Support for sparse TrackedArray
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- Dominant language
- Julia
- Stars
- 393
- Forks
- 60
- Avg merge
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- Merged PRs (30d)
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Description
I'm trying to calculate gradients with respect to elements of a sparse input array, but this seems to be forbidden due to the check:
AssertionError: IndexStyle(value) === IndexLinear()
Could you give me some pointers to how to try to include this?
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
Start by tracing the IndexStyle(value) === IndexLinear() assertion mentioned in the issue and inspect how TrackedArray handles sparse inputs. Determine the project’s existing gradient behavior for sparse arrays; done means gradients with respect to sparse input elements are supported without that assertion failing.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- julia
- Domain
- data
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100