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| diffseries | Fractionally Differenciate Data |
| fdGPH | Geweke and Porter-Hudak Estimator for ARFIMA(p,d,q) |
| fdSperio | Sperio Estimate for 'd' in ARFIMA(p,d,q) |
| fracdiff | ML Estimates for Fractionally-Differenced ARIMA (p,d,q) models |
| fracdiff.sim | Simulate fractional ARIMA Time Series |
| fracdiff.var | Recompute Covariance Estimate for fracdiff |