statsmodels.tsa.statespace.mlemodel.MLEModel.untransform_params¶

MLEModel.untransform_params(constrained)[source]¶

Transform constrained parameters used in likelihood evaluation to unconstrained parameters used by the optimizer

Parameters:¶

constrained : array_like¶

Array of constrained parameters used in likelihood evaluation, to be transformed.

Returns:¶

unconstrained – Array of unconstrained parameters used by the optimizer.

Return type:¶

array_like

Notes

This is a noop in the base class, subclasses should override where appropriate.