A Dynamical Model of Decision-Making Behaviour in a Network of Consumers   with Applications to Energy Choices
  A consumer Behaviour model is considered in the context of a network of interacting individuals in an energy market. We propose and analyse a simple dynamical model of an ensemble of coupled active elements mimicking consumers' Behaviour, where ``word-of-mouth'' interactions between individuals is important. A single element is modelled using the automatic control system framework. Assuming local (nearest neighbour) coupling we study the evolution of chains and lattices of the model consumers on variation of the coupling strength and initial conditions. The results are interpreted as the dynamics of the decision-making process by the energy-market consumers. We demonstrate that a pitchfork bifurcation to the homogeneous solution leads to bistability of stationary regimes, while the autonomous system is always monostable. In presence of inhomogeneities this results in the formation of clusters of sharply positive and negative opinions. We also find that, depending on the coupling strength, the perturbations caused by inhomogeneities can be exponentially Localised in space or de-Localised. In the latter case the coarse-graining of opinion clusters occurs. 
Nick. J. McCullen, Mikhail. V. Ivanchenko, Vladimir. D. Shalfeev and   William. F. Gale
nlin.AO