statsmodels.tsa.arima_process.lpol_fima¶ statsmodels.tsa.arima_process.lpol_fima(d, n=20)[source]¶ MA representation of fractional integration \[(1-L)^{-d} for |d|<0.5 or |d|<1 (?)\] Parameters dfloatfractional power nintnumber of terms to calculate, including lag zero Returns maarraycoefficients of lag polynomial