JuliaDiff / JuliaDiff/ForwardDiff.jl

dynamic NaN-safe mode switching

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#181 3 comments 3 reactions 0 assignees View on GitHub

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Dominant language
Julia
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Description

Follow-up issue to #179. From my comment there:

In a future PR, we could add AbstractConfig constructors like GradientConfig(x, Chunk{N}, NaNSafe{true}). The generated dual numbers would then contain partials of type Partials{N,T,true}, which would dispatch to the NaN-safe versions of methods. Downstream modules could then support passing that option through their APIs (or simply setting it to a reasonable default for themselves internally).

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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 issue #179 and the referenced comment, then trace AbstractConfig, GradientConfig, Chunk, NaNSafe, and Partials in the Julia source. Check how generated dual numbers and downstream module APIs currently handle configuration; done means a reviewed design and implementation for dynamic NaN-safe mode switching.

Written by the indexing model from the issue text.

Assessment

Tech stack
julia
Domain
backend
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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