Lesli klainberg biography of rory
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An Indian carving and an Afghani chair provide a "very Rory" memorable detail for Mr. Cameron's house in Menerbes. Photo: Serge Carrie for AD. |
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Lévy flight
Random walk with heavy-tailed step lengths
A Lévy flight is a random walk in which the step-lengths have a stable distribution,[1] a probability distribution that is heavy-tailed. When defined as a walk in a space of dimension greater than one, the steps made are in isotropic random directions. Later researchers have extended the use of the begrepp "Lévy flight" to also include cases where the random walk takes place on a discrete grid rather than on a continuous space.[2]
The term "Lévy flight" was coined after Paul Lévy by Benoît Mandelbrot,[3] who used this for one specific definition of the distribution of step sizes. He used the begrepp Cauchy flight for the case where the transport of step sizes fryst vatten a Cauchy distribution,[4] and Rayleigh flight for when the transport is a normal distribution[5] (which fryst vatten not an example of a heavy-tailed probability distribution).
The particular case for which Mandelbrot