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- W4300562479 abstract "Conditions for geometric ergodicity of multivariate autoregressive conditional heteroskedasticity (ARCH) processes, with the so-called BEKK (Baba, Engle, Kraft, and Kroner) parametrization, are considered. We show for a class of BEKK-ARCH processes that the invariant distribution is regularly varying. In order to account for the possibility of different tail indices of the marginals, we consider the notion of vector scaling regular variation, in the spirit of Perfekt (1997, Advances in Applied Probability, 29, pp. 138-164). The characterization of the tail behavior of the processes is used for deriving the asymptotic properties of the sample covariance matrices." @default.
- W4300562479 created "2022-10-03" @default.
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- W4300562479 date "2017-01-18" @default.
- W4300562479 modified "2023-10-18" @default.
- W4300562479 title "On the tail behavior of a class of multivariate conditionally heteroskedastic processes" @default.
- W4300562479 doi "https://doi.org/10.48550/arxiv.1701.05091" @default.
- W4300562479 hasPublicationYear "2017" @default.
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