sktime/sktime

[ENH] `GroupByTransformer`

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#9,262 opened on 2026年1月19日

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feature requestgood first issuemodule:transformations

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Discussed in https://github.com/sktime/sktime/discussions/9248

Originally posted by RobKuebler January 15, 2026 Hi!

There is a GroupByForecaster already that lets you train a (global) model per time series cluster. How about a GroupByTransformer that lets you do the same, but with transformers instead of forecasters?

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