Self-organized criticality and coevolution of network structure and dynamics.
نویسندگان
چکیده
We investigate, by numerical simulations, how the avalanche dynamics of the Bak-Tang-Wiesenfeld sandpile model can induce emergence of scale-free networks and how this emerging structure affects dynamics of the system.
منابع مشابه
Dynamical synapses causing self-organized criticality in neural networks
We show that a network of spiking neurons exhibits robust self-organized criticality if the synaptic efficacies follow realistic dynamics. Deriving analytical expressions for the average coupling strengths and inter-spike intervals, we demonstrate that networks with dynamical synapses exhibit critical avalanche dynamics for a wide range of interaction parameters. We prove that in the thermodyna...
متن کاملSelf-organization of heterogeneous topology and symmetry breaking in networks with adaptive thresholds and rewiring
We study an evolutionary algorithm that locally adapts thresholds and wiring in Random Threshold Networks, based on measurements of a dynamical order parameter. If a node is active, with probability p an existing link is deleted, with probability 1− p the node’s threshold is increased, if it is frozen, with probability p it acquires a new link, with probability 1 − p the node’s threshold is dec...
متن کاملA Self–organized model for network evolution Coupling network evolution and extremal dynamics
Here we provide a detailed analysis, along with some extensions and additonal investigations, of a recently proposed [1] self–organised model for the evolution of complex networks. Vertices of the network are characterised by a fitness variable evolving through an extremal dynamics process, as in the Bak–Sneppen [2] model representing a prototype of Self–Organized Criticality. The network topol...
متن کاملCriticality of avalanche dynamics in adaptive recurrent networks
In many studies of self-organized criticality (SOC), branching processes were used to model the dynamics of the activity of the system during avalanches. This mathematical simplification was also adopted when investigating systems with a complicated connection topology including recurrent and subthreshold interactions. However, none of these studies really analyzed whether this convenient appro...
متن کاملAvalanches in Self-Organized Critical Neural Networks: A Minimal Model for the Neural SOC Universality Class
The brain keeps its overall dynamics in a corridor of intermediate activity and it has been a long standing question what possible mechanism could achieve this task. Mechanisms from the field of statistical physics have long been suggesting that this homeostasis of brain activity could occur even without a central regulator, via self-organization on the level of neurons and their interactions, ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Physical review. E, Statistical, nonlinear, and soft matter physics
دوره 73 4 Pt 2 شماره
صفحات -
تاریخ انتشار 2006