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statsmodels.base.model.GenericLikelihoodModel.expandparams

GenericLikelihoodModel.expandparams(params)[source]

expand to full parameter array when some parameters are fixed

Parameters:

params : array

reduced parameter array

Returns:

paramsfull : array

expanded parameter array where fixed parameters are included

Notes

Calling this requires that self.fixed_params and self.fixed_paramsmask are defined.

developer notes:

This can be used in the log-likelihood to ...

this could also be replaced by a more general parameter transformation.

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