An Algorithm for the Stochastic User Equilibrium Problem
نویسندگان
چکیده
In this paper we present a new algorithm for the approximate solution of the logit-based stochastic user equilibrium problem. The main advantage of this algorithm is that it provides route ows explicitly, of particular interest in the evaluation of route guidance and information systems; in previously proposed methods for the stochastic user equilibrium problem, only link ows are provided. The proposed algorithm alternates between two main phases. In the subproblem phase, prootable routes are generated. In a restricted master problem, a descent method is used to solve the restriction to the original problem to the subset of the total set of routes generated so far. We present and evaluate alternative strategies for generating routes algorithmically, and discuss the possibility of utilizing such strategies for reducing the inherent problem of overlapping route ows in logit-based traac models.
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