Topics in Time Series Analysis. III. ARIMA Time Series Models with Non-Normal Shocks
WISCONSIN UNIV-MADISON DEPT OF STATISTICS
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In this paper the parent distribution of the shocks a sub t in ARIMA models is extended to the family of symmetric exponential power distributions, which covers the Normal as well as particular forms of symmetric leptokurtic and playkurtic distributions. The inference robustness of the parameters of ARIMA models and the effect of non Normality of the shocks on the forecasts is studied.
- Numerical Mathematics