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Communication Dans Un Congrès Année : 2007

Time-Scale Block Bootstrap tests for non Gaussian finite variance self-similar processes with stationary increments

Herwig Wendt
Patrice Abry

Résumé

Scaling analysis is nowadays becoming a standard tool in statistical signal processing. It mostly consists of estimating scaling attributes which in turns are involved in standard tasks such as detection, identification or classification. Recently, we proposed that confidence interval or hypothesis test design for scaling analysis could be based on non parametric bootstrap approaches. We showed that such procedures are efficient to decide whether data are better modeled with Gaussian fractional Brownian motion or with multifractal processes. In the present contribution, we investigate the relevance of such bootstrap procedures to discriminate between non Gaussian finite variance self similar processes with stationary increments (such as Rosenblatt process) and multifractal processes. To do so, we introduce a new joint time-scale block based bootstrap scheme and make use of the most recent scaling analysis tools, based on wavelet leaders.
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Dates et versions

ensl-00160708 , version 1 (06-07-2007)

Identifiants

  • HAL Id : ensl-00160708 , version 1

Citer

Herwig Wendt, Patrice Abry. Time-Scale Block Bootstrap tests for non Gaussian finite variance self-similar processes with stationary increments. IEEE Statistical Signal Processing Workshop 2007 (SSP'07), 2007, Madison, Wisconsin, United States. ⟨ensl-00160708⟩
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