statsmodels.tsa.arima_process.lpol_fiar
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statsmodels.tsa.arima_process.lpol_fiar(d, n=20)
[source] -
AR representation of fractional integration
Parameters: d : float
fractional power
n : int
number of terms to calculate, including lag zero
Returns: ar : array
coefficients of lag polynomial
Notes: :
first coefficient is 1, negative signs except for first term, :
ar(L)*x_t :
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