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@lorentzenchr lorentzenchr commented Sep 1, 2025

Reference Issues/PRs

Carries out #28703 and #31241.
Contributes massively to #11865.
Fixes #32072

What does this implement/fix? Explain your changes.

This PR removes the deprecated parameter multi_class from LogisticRegression and LogisticRegressionCV and does all the necessary code refactoring to not drown of all the legacy code.

Any other comments?

A lot of work, but I hope it is useful for the future.

@lorentzenchr lorentzenchr added this to the 1.8 milestone Sep 1, 2025
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@jeremiedbb This is a very difficult to carry out deprecation. At least, this PR is a big jump start. I might not be able to finish it in time. In that case, someone can take over.

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@lorentzenchr lorentzenchr force-pushed the dep_logistic_multiclass branch from c248ea7 to e538ff5 Compare September 2, 2025 10:40
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Dear reviewers, feel free to finish in case I am unresponsive.

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LogisticRegressionCV intercept is wrong
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