Title :
Limit cycles in replicator-mutator network dynamics
Author :
Pais, Darren ; Leonard, Naomi Ehrich
Author_Institution :
Dept. of Mech. & Aerosp. Eng., Princeton Univ., Princeton, NJ, USA
Abstract :
The replicator-mutator equations from evolutionary dynamics serve as a model for the evolution of language, behavioral dynamics in social networks, and decision-making dynamics in networked multi-agent systems. Analysis of the stable equilibria of these dynamics has been a focus in the literature, where symmetry in fitness functions is typically assumed. We explore asymmetry in fitness and show that the replicator-mutator equations exhibit Hopf bifurcations and limit cycles. We prove conditions for the existence of stable limit cycles for the dynamics in the case of circulant fitness matrices, and illustrate their existence in the noncirculant case. For decision-making networks, these limit cycles correspond to sustained oscillations in decisions across the group.
Keywords :
bifurcation; decision making; grammars; multi-agent systems; natural languages; social networking (online); social sciences; Hopf bifurcations; behavioral dynamics; circulant fitness matrices; decision-making dynamics; decision-making networks; evolutionary dynamics; fitness functions; language evolution; networked multiagent systems; noncirculant case; replicator-mutator equations; replicator-mutator network dynamics; social networks; stable limit cycles; sustained oscillations; Aerodynamics; Bifurcation; Decision making; Limit-cycles; Mathematical model; Silicon;
Conference_Titel :
Decision and Control and European Control Conference (CDC-ECC), 2011 50th IEEE Conference on
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-61284-800-6
Electronic_ISBN :
0743-1546
DOI :
10.1109/CDC.2011.6160995