期刊
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
卷 334, 期 1-2, 页码 119-131出版社
ELSEVIER
DOI: 10.1016/j.physa.2003.11.005
关键词
disequilibrium; distances in probability space; dynamical systems
We discuss a way of characterizing probability distributions, complementing that provided by the celebrated notion of information measure, with reference to a measure of complexity that we call a nontriviality measure. Our starting point is the LMC measure of complexity advanced by Lopez-Ruiz et at. (Phys. Lett. A 209 (1995) 321) and its analysis by Anteneodo and Plastino (Phys. Lett. A 223 (1997) 348). An improvement of some of their troublesome characteristics is thereby achieved. Basically, we replace the Euclidean distance to equilibrium by the Jensen-Shannon divergence. The resulting measure turns out to be (i) an intensive quantity and (ii) allows one to distinguish between different degrees of periodicity. We apply the cured measure to the logistic map so as to clearly exhibit its advantages. (C) 2004 Elsevier B.V. All rights reserved.
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