Statistical thermodynamics for choice models on graphs

Details Statistical thermodynamics for choice models on graphs Statistical thermodynamics for choice models on graphs

2003-06-28

arxiv.org/abs/cond-mat/0306717v1

Physica A337 (2004) 645

Physics

Condensed Matter

Statistical Mechanics

17 pages, 13 figures

Scientific paper

10.1016/j.physa.2004.01.063

Formalism based on equilibrium statistical thermodynamics is applied to communication networks of decision making individuals. It is shown that in statistical ensembles for choice models, properly defined disutility can play the same role as energy in statistical mechanics. We demonstrate additivity and extensivity of disutility and build three types of equilibrium statistical ensembles: the canonical, the grand canonical and the super-canonical. Using Boltzmann-like probability measure one reproduce the logit choice model. We also propose using q-distributions for temperature evolution of moments of stochastic variables. The formalism is applied to three network topologies of different degrees of symmetry, for which in many cases analytic results are obtained and numerical simulations are performed for all of them. Possible applications of the model to airline networks and its usefulness for practical support of economic decisions is pointed out.

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