Probabilistic numerical method

[pnkraemer]

Hi all!

I have a Q about the interface ProbabilisticNumericalMethod. The context is #486, where I want to make the probabilistic (filtering-based) ODE solver inherit from the PN method interface.

The output of ProbabilisticNumericalMethod.solve() is a tuple of

• BeliefType
• StateType

I do not understand what these output types mean.
I suppose one of those is something that contains a RandomVariable/RandomProcess (I guess BeliefType?). If so, what is an example for a StateType?
I would expect something like a dictionary (containing extra information) as a second output.