نتایج جستجو برای: random drift

تعداد نتایج: 313333  

Journal: :CoRR 2013
Jun Sun Xiaojun Wu Vasile Palade Wei Fang Yuhui Shi

The random drift particle swarm optimization (RDPSO) algorithm, inspired by the free electron model in metal conductors placed in an external electric field, is presented, systematically analyzed and empirically studied in this paper. The free electron model considers that electrons have both a thermal and a drift motion in a conductor that is placed in an external electric field. The motivatio...

2015
Werner R.W. Scheinhardt Dirk P. Kroese

Although the theoretical behavior of one-dimensional random walks in random environments is well understood, the actual evaluation of various characteristics of such processes has received relatively little attention. This paper develops new methodology for the exact computation of the drift in such models. Focusing on random walks in dependent random environments, including k-dependent and mov...

Journal: :Journal of Applied Probability 2017

Journal: :Stochastic Processes and their Applications 2010

Journal: :Journal of Time Series Analysis 2005

Journal: :Proceedings of the National Academy of Sciences 1966

Journal: :Journal of the Optical Society of America. A, Optics and image science 1988
C Chubb G Sperling

To some degree, all current models of visual motion-perception mechanisms depend on the power of the visual signal in various spatiotemporal-frequency bands. Here we show how to construct counterexamples: visual stimuli that are consistently perceived as obviously moving in a fixed direction yet for which Fourier-domain power analysis yields no systematic motion components in any given directio...

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