support integer refit in cross_validation

Nixtla / mlforecast

Scalable machine 🤖 learning for time series forecasting.

https://nixtlaverse.nixtla.io/mlforecast

Apache License 2.0

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Closed jmoralez closed 1 year ago

jmoralez commented 1 year ago

Extends the refit argument in MLForecast.cross_validation to support integers, which allows retraining the models at specific window intervals.

Fixes #188

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