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function a = metropolis(dE,T,q) % Metropolis acceptance method supplied with SA Tools. % Copyright (c) 2002, by Richard Frost and Frost Concepts. % See http://www.frostconcepts.com/software for information on SA Tools. % % a = metropolis(dE,T,q) ; % % dE = the difference in cost between a trial state and % the current state: dE = Wtrial - W % T = the current temperature % q = (not used) any data required by the acceptrule % a = 0 if trial is rejected, otherwise 1. % a = 0 ; if (dE <= 0) a = 1 ; else if rand < exp(-dE/T) a = 1 ; end end