Add the regularization calibration
It would be nice to implement the regularisation calibration proposed by de Lavenne et al. (2019) (https://doi.org/10.1029/2018WR024266). That would stabilise parameters for downstream basins.
Basically, we need to consider in the calibration process the distance between calibrated parameter values and parameter values of upstream catchments.
That would be useful for @cyril.thebault as well as Laura and other people using airGR-SD.
I would say that we need for that:
to have access to upstream parameter values in
regulboolean in CreateCalibOptions and retrieve it in
either a new
Error_Critthat allows to combine any
Error_Critwith the distance calculation, or implement directly that in
distance must be calculated in the transformed space of parameters to avoid having parameters with huge distance (e.g. X1) compared to smaller parameters (e.g. X4)
certainly other things that will come up when we try to implement it. :)
Who wants to give it a try? :)