JSM 2011 Online Program

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Abstract Details

Activity Number: 309
Type: Contributed
Date/Time: Tuesday, August 2, 2011 : 8:30 AM to 10:20 AM
Sponsor: IMS
Abstract - #301066
Title: On Data Adaptive Wavelet Decomposition and Bootstrap Under Long-Range Dependence
Author(s): Jan Beran*+ and Yevgen Shumeyko
Companies: University of Konstanz and University of Konstanz
Address: Department of Mathematics and Statistics,, Konstanz, International, 78457, Germany
Keywords: long-range dependence ; wavelets ; bootstrap ; discontinuity ; data adaptive ; time series
Abstract:

Optimal data adaptive wavelet estimation of a trend function in time series with long-range dependence leads to a natural decomposition into a low and a high-resolution part. Explicit formulas for optimal decomposition levels and smoothing parameters are obtained. Moreover, a bootstrap test is developed to detect discontinuities in the underlying trend function. Asymptotic validity and consistency of the test are derived under general conditions.


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