medium10 pts · first answer countstime-seriesmodel-evaluation

Validating a forecasting model

How should you validate a model that forecasts next week of sales?

A.Shuffle all rows and use 5-fold cross-validationB.Train on earlier periods and test on later ones, rolling forward in timeC.Use leave-one-out cross-validation on random daysD.Test on the training data to save time

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Validating a forecasting model

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