Users should be able to specify which parameters to start optimizing from. StepMix can already be provided with parameters (see examples in `datasets.py`), but we need to make sure they don't get reinitialized when calling `fit`.
Users should be able to specify which parameters to start optimizing from.
StepMix can already be provided with parameters (see examples in
datasets.py), but we need to make sure they don't get reinitialized when callingfit.