JuliaGaussianProcesses / JuliaGaussianProcesses/KernelFunctions.jl

Known AD Failures

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#116 27 comments 0 reactions 0 assignees View on GitHub

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help wanted
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Julia
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Description

Here is a list of the failures in the tests made in #114 I observed with the different ADs : ForwardDiff.jl, Zygote.jl and ReverseDiff.jl :

  • FBMKernel : ForwardDiff/Zygote
  • GaborKernel : Zygote (ForwardDiff+ReverseDiff randomly)
  • MaternKernel : Zygote
  • SpectralMixture : All
  • PeriodicKernel : Zygote (need to define an adjoint) #531, ForwardDiff and ReverseDiff fail randomly (edge cases might need to be looked at) #389
  • Wiener : All
  • GammaExponentialKernel : Zygote
  • NeuralNetworkKernel : Zygote
  • PiecewisePolynomialKernel : All
  • PolynomialKernel : All
  • GammaRationalQuadratic : All
  • KernelProduct : Zygote
  • KernelSum : Zygote
  • FunctionTransform : Zygote
  • ChainTransform : Zygote #415

This is a good starting point to try to find solutions

Contributor guide

Open the contributing guide

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 with the tests from issue #114 and reproduce the unchecked failures across ForwardDiff.jl, Zygote.jl, and ReverseDiff.jl. Review the referenced issues #531, #389, and #415 for existing context on PeriodicKernel and ChainTransform. Done means the listed automatic-differentiation failures are resolved and the corresponding tests pass.

Written by the indexing model from the issue text.

Assessment

Tech stack
julia
Domain
machine-learning, testing-qa
Issue type
Bug
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
30/100

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