statespace
VARMAXResults.
cov_params_robust
(array) The QMLE variance / covariance matrix. Alias for cov_params_robust_oim
statsmodels.tsa.statespace.varmax.VARMAXResults.cov_params_opg
statsmodels.tsa.statespace.varmax.VARMAXResults.cov_params_robust_approx