Easier Access to Nonlinearities

[jacobnzw]

When I want to use nonlinearity, say from a UNGMTransitionModel, just for experiments, I have to instantiate the class, which means I have to provide the init_rv and noise_rv arguments, which in turn require of me to instantiate yet another class, e.g. GaussRV. This is waaaay too much hassle! All I want is access the nonlinearity of the UNGM model.

Requirements

• nonlinearities (functions) must be accessible without the need to instantiate a class (TransitionModel, MeasurementModel)