middle_out(models, split = 1)

## Arguments

models A column of models in a mable. The middle level of the hierarchy from which the bottom-up and top-down approaches are used above and below respectively.

## Details

Reconciles a hierarchy using the middle out reconciliation method. The response variable of the hierarchy must be aggregated using sums. The forecasted time points must match for all series in the hierarchy.

reconcile(), aggregate_key() Forecasting: Principles and Practice - Middle-out approach