Github user MLnick commented on the issue:
    I have a few high level questions on this:
    #### Params
    Why are we only setting` k` based on the `initialModel`? I had thought from 
previous discussion above (it was a while ago now) that it would set all 
parameters? Of course some will be ignored like the init settings, but I think 
the default expectation of using `setInitialModel` would be that all params are 
    For example, let's say I train a model with various `maxIter` and `tol` 
params. Then I want to use that model later for warm-starting. I want the same 
settings, just start from the existing centroids. I have to remember to do `new 
    If there is a good argument against this I'm happy to hear it, but then we 
must document this behavior clearly.
    #### Saving initial model on Model
    What is the reasoning behind saving the `initialModel` on the `Model`? It 
makes sense for the `Estimator` - I may want to save my estimator, and when 
loading it of course I'd need the initial model to be loaded, if it was set, so 
that I can correctly fit my estimator.
    But once I've fit a model, why would I save two models?

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