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29 March 2024
 
  » arxiv » cond-mat/0201002

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Self-Segregation vs. Clustering in the Evolutionary Minority Game
Shahar Hod ; Ehud Nakar ;
Date 1 Dec 2001
Journal Phys. Rev. Lett. {f 88}, 238702 (2002)
Subject Condensed Matter; Physics and Society; Biological Physics; Adaptation and Self-Organizing Systems | cond-mat astro-ph nlin.AO physics.bio-ph physics.soc-ph q-bio
AbstractComplex adaptive systems have been the subject of much recent attention. It is by now well-established that members (`agents’) tend to self-segregate into opposing groups characterized by extreme behavior. However, while different social and biological systems manifest different payoffs, the study of such adaptive systems has mostly been restricted to simple situations in which the prize-to-fine ratio, $R$, equals unity. In this Letter we explore the dynamics of evolving populations with various different values of the ratio $R$, and demonstrate that extreme behavior is in fact {it not} a generic feature of adaptive systems. In particular, we show that ``confusion’’ and ``indecisiveness’’ take over in times of depression, in which case cautious agents perform better than extreme ones.
Source arXiv, cond-mat/0201002
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