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- W3143145464 abstract "This paper provides an exact algorithm for efficient computation of the time series of conditional variances, and hence the likelihood function, of models that have an ARCH($infty$) representation. This class of models includes, e.g., the fractionally integrated generalized autoregressive conditional heteroskedasticity (FIGARCH) model. Our algorithm is a variation of the fast fractional difference algorithm of Jensen and Nielsen (2014). It takes advantage of the fast Fourier transform (FFT) to achieve an order of magnitude improvement in computational speed. The efficiency of the algorithm allows estimation (and simulation/bootstrapping) of ARCH($infty$) models, even with very large data sets and without the truncation of the filter commonly applied in the literature. In Monte Carlo simulations, we show that the elimination of the truncation of the filter reduces the bias of the quasi-maximum-likelihood estimators and improves out-of-sample forecasting. Our results are illustrated in two empirical examples." @default.
- W3143145464 created "2021-04-13" @default.
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- W3143145464 date "2020-11-23" @default.
- W3143145464 modified "2023-09-27" @default.
- W3143145464 title "To infinity and beyond: Efficient computation of ARCH(infty) models" @default.
- W3143145464 hasPublicationYear "2020" @default.
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