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WIP: fit_constrained #1714
add constrained fitting to models
starting with generic setup and Poisson as example.
The last commit added start_params, but used it only in one of the two non-converging test cases.
referenced this pull request
Jun 3, 2014
only Poisson and GLM for now
If the _wrap functions that modifies an existing model work out, then I think we can add more of those that without needing to incorporate them in every model. Pinv/PCR for non-linear models (Poisson and GLM again) would be my next transform candidate.