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- W1991968032 abstract "Hall & Yao (2003) showed that, for ARCH/GARCH, i.e. autoregressive conditional heteroscedastic/generalised autoregressive conditional heteroscedastic, models with heavy‐tailed errors, the conventional maximum quasilikelihood estimator suffers from complex limit distributions and slow convergence rates. In this paper three types of absolute deviations estimator have been examined, and the one based on logarithmic transformation turns out to be particularly appealing. We have shown that this estimator is asymptotically normal and unbiased. Furthermore it enjoys the standard convergence rate of n1/2 regardless of whether the errors are heavy‐tailed or not. Simulation lends further support to our theoretical results." @default.
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- W1991968032 date "2003-12-01" @default.
- W1991968032 modified "2023-10-16" @default.
- W1991968032 title "Least absolute deviations estimation for ARCH and GARCH models" @default.
- W1991968032 doi "https://doi.org/10.1093/biomet/90.4.967" @default.
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