Fluctuation of the download network

Details Fluctuation of the download network Fluctuation of the download network

2007-10-31

arxiv.org/abs/0710.5865v2

Chin.Phys.Lett.25:765-768,2008

Physics

Physics and Society

4 pages, 4 figures

Scientific paper

10.1088/0256-307X/25/2/112

The scaling behavior of fluctuation for a download network which we have investigated a few years ago based upon Zhang's Encophysics web page has been presented. A power law scaling, namely $\sigma \sim < f> ^ \alpha $ exists between the dispersion $\sigma$ and average flux $$ of the download rates. The fluctuation exponent $\alpha$ is neither 1/2 nor 1 which was claimed as two universal fluctuation classes in previous publication, instead it varies from 1/2 to 1 with the time window in which the download data were accumulated. The crossover behavior of fluctuation exponents can be qualitatively understood by the external driving fluctuation model for a small-size system or a network traffic model which suggests congestion as the origin.

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