# statsmodels.tsa.statespace.dynamic_factor.DynamicFactor.transform_params¶

DynamicFactor.transform_params(unconstrained)[source]

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

Parameters: unconstrained (array_like) – Array of unconstrained parameters used by the optimizer, to be transformed. constrained – Array of constrained parameters which may be used in likelihood evalation. array_like

Notes

Constrains the factor transition to be stationary and variances to be positive.