Related pitfalls: any preprocessing that learns from data (scaling, imputing, encoding) belongs inside a Pipeline so it'...

Related pitfalls: any preprocessing that learns from data (scaling, imputing, encoding) belongs inside a Pipeline so it's fitted on the training fold only. For repeated entities use GroupKFold, and for time-ordered data use TimeSeriesSplit instead of shuffled folds.#MachineLearning #Statistics

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