Parameter Estimation

I'm setting up a parameter estimation experiment to estimate the kBOD.

I have data for 5 days. If I set my simulation time to 20 days, what happens to the objective (mean difference)?

- after the 5 days, it holds the last value and subtracts the simulation values from the last value
- it does not calculate the difference when there is no data

When comparing simulated time series with reference series in the scope of objective evaluation, differences are computed at the time points of the reference series (linear interpolation is done for the simulated series in case it has different time points, which is most often the case). So in your case, only the 5 days of the reference series are taken into account.