Modelling Approaches

For each challenge below, we describe what modelling approaches are available, what data they need, and when they are most useful. For mathematical details and computational properties, see the companion technical overview.

Challenge	Approaches	Description
Correcting delayed data	Simple, Multiplicative, Regression, Generative, Other statistical	Adjust for right-truncation caused by delays between events and their reports
Managing data revisions	(placeholder?)	Handle retrospective changes to previously reported data
Site drop-in and drop-out	(placeholder?)	Account for facilities joining or leaving the surveillance system
Other data quality issues	(placeholder?)	Address missing dates, format incompatibilities, and deduplication