Compare to regression method

[seabbs]

The decomposition into a hospitalisation and probability vector model used here is not the only possible nowcasting approach. A very sensible approach, though one that has slightly less nice theoretical properties is to model hospitalisations and delays jointly in a regression framework (with the outcome being new cases by time and delay). Summing over these then gives the nowcast.

Comparing these two approaches in a context where the models are otherwise the same would make it easier to understand their differences.

Similarly, the model evaluated here can also be phrased as a non-linear regression problem, for example in brms. It would be interesting to explore this implementation as it would allow a much large suite of models to be formulated though at the potential cost of some efficiency.