Recent advances of stretched Gaussian distribution underlying Hausdorff fractal distance and its applications in fitting stretched Gaussian noise

Wei Xu, Yingjie Liang, Wen Chen and Fajie Wang

Physica A: Statistical Mechanics and its Applications, 2020, vol. 539, issue C

Abstract: This paper summarizes the latest advances of the third author’s research group on stretched Gaussian distribution underlying the Hausdorff fractal theory and its applications in fitting stretched Gaussian noise. Firstly, the Hausdorff fractal metrics are introduced as an extension of non-Euclidean distance. Based on the fractal scaling, the Hausdorff derivative is derived which can describe the problems of interest to construct non-integer differential equations. Secondly, we introduce the Hausdorff derivatives in tackling partial differential equations, and the fundamental solution of Hausdorff derivative diffusion equation is stretched Gaussian distribution. Thirdly, we analyze the feasibility of the least square method for stretched Gaussian noise, which obeys stretched Gaussian distribution. The least square method is inapplicable when the noise level is larger than 5%. Finally, by using the Hausdorff fractal distance, we introduce the stretched least square method, which improves the traditional least square method, to fit stretched Gaussian noise.

Keywords: Stretched Gaussian distribution; Hausdorff fractal distance; Hausdorff derivative; Stretched Gaussian noise; Least square method (search for similar items in EconPapers)
Date: 2020
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:539:y:2020:i:c:s0378437119316930

DOI: 10.1016/j.physa.2019.122996

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