Open edxu96 opened 3 years ago
An advantage of this approach is that we are forecasting at the bottom-level of a structure, and therefore no information is lost due to aggregation. On the other hand, bottom-level data can be quite noisy and more challenging to model and forecast. [FPP3]
Top-down approaches involve first generating forecasts for the Total series, and then disaggregating these down the hierarchy. This only works with strictly hierarchical data, not with grouped or mixed aggregation structures. [FPP3]
fpp3
crossvalidated