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Bootstrapping multifractals: surrogate data from random cascades on wavelet dyadic trees

. 2008 Sep 26 ; 101 (13) : 134101. [epub] 20080925

Status PubMed-not-MEDLINE Language English Country United States Media print-electronic

Document type Journal Article

A method for random resampling of time series from multiscale processes is proposed. Bootstrapped series--realizations of surrogate data obtained from random cascades on wavelet dyadic trees--preserve the multifractal properties of input data, namely, interactions among scales and nonlinear dependence structures. The proposed approach opens the possibility for rigorous Monte Carlo testing of nonlinear dependence within, with, between, or among time series from multifractal processes.

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