Enhance ValidationCurveDisplay for categorical parameters #31043
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Reference Issues/PRs
Fixes #28536
See also the discussion in ValidationCurveDisplay can't handle categorical parameters.
What does this implement/fix? Explain your changes.
This PR enhances the
ValidationCurveDisplay
to support categorical parameters. Previously, it only worked with numerical hyperparameters, causing errors when string-based parameters were used. The update introduces:Any other comments?