@cache_readonly
    def aic(self):
        # return -2*self.llf + 2*self.params.shape[0]
        return aic(self.llf, self.nobs, self.params.shape[0])
(float) Akaike Information Criterion
dataset/ETHPy150Open statsmodels/statsmodels/statsmodels/tsa/statespace/mlemodel.py/MLEResults.aic