ENH Add sample_weight parameter to OneHotEncoder's .fit
#26330
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…stments to sum(sample_weight)=0 scenario
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As I had to adapt to the #27381 PR related to the new array API (#26024 for details), this PR got a little bit denser. The failing CI is due to coverage. Anyway, before I continue to work on this PR, I think I need a review otherwise I might invest too much time into some path (maybe I already did that hahah) and have to change it all. |
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Fixes #26248.
This PR adds
sample_weightparameter toOneHotEncoder.fitfunction and calculate level frequencies usingsample_weightsum instead of counting. Also, this enables the ranking of categories accordingly for the use ofmax_categories.