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Fluctuation scaling in complex systems: Taylor's law and beyond

Fluctuation scaling in complex systems: Taylor's law and beyond

This video was recorded at 4th European Phd Complexity School. Complex systems consist of many interacting elements which participate in some dynamical process. The activity of various elements is often different and the fluctuation in the activity of an element grows monotonically with the average activity. This relationship is generically of the form fluctuations ≈ const.\times average^α, where the exponent α is predominantly in the range [1/2, 1]. This power law has been observed in a very wide range of disciplines, ranging from population dynamics through the Internet to the stock market and it is often treated under the names Taylor's law or fluctuation scaling. We attempt to show how general the above scaling relationship is by surveying the literature, as well as by reporting some... Show More
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