Accuracy of Mean-Field Theory for Dynamics on Real-World Networks

Details Accuracy of Mean-Field Theory for Dynamics on Real-World Networks Accuracy of Mean-Field Theory for Dynamics on Real-World Networks

2010-11-16

arxiv.org/abs/1011.3710v3

Phys. Rev. E, 85, 026106 (2012)

Physics

Physics and Society

12 pages, 10 figures. This version (with title changed from "How Accurate is Mean-Field Theory for Dynamics on Real-World Netw

Scientific paper

10.1103/PhysRevE.85.026106

Mean-field analysis is an important tool for understanding dynamics on complex networks. However, surprisingly little attention has been paid to the question of whether mean-field predictions are accurate, and this is particularly true for real-world networks with clustering and modular structure. In this paper, we compare mean-field predictions to numerical simulation results for dynamical processes running on 21 real-world networks and demonstrate that the accuracy of the theory depends not only on the mean degree of the networks but also on the mean first-neighbor degree. We show that mean-field theory can give (unexpectedly) accurate results for certain dynamics on disassortative real-world networks even when the mean degree is as low as 4.

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