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    Wavelet estimation of the long memory parameter for Hermite polynomial of Gaussian processes

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    Date Issued
    2014-01-01
    Publisher Version
    10.1051/ps/2012026
    Author(s)
    Clausel, M.
    Roueff, F.
    Taqqu, Murad S.
    Tudor, C.
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    Permanent Link
    https://hdl.handle.net/2144/37500
    Version
    Accepted manuscript
    Citation (published version)
    M. Clausel, F. Roueff, M.S. Taqqu, C. Tudor. 2014. "Wavelet estimation of the long memory parameter for Hermite polynomial of Gaussian processes." ESAIM-PROBABILITY AND STATISTICS, Volume 18, pp. 42 - 76 (35). https://doi.org/10.1051/ps/2012026
    Abstract
    We consider stationary processes with long memory which are non-Gaussian and represented as Hermite polynomials of a Gaussian process. We focus on the corresponding wavelet coefficients and study the asymptotic behavior of the sum of their squares since this sum is often used for estimating the long–memory parameter. We show that the limit is not Gaussian but can be expressed using the non-Gaussian Rosenblatt process defined as a Wiener–Itô integral of order 2. This happens even if the original process is defined through a Hermite polynomial of order higher than 2.
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    • CAS: Mathematics & Statistics: Scholarly Papers [280]
    • BU Open Access Articles [3847]


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