Differential evolution for integer programming problems

The performance of two recent variants of differential evolution (DE) when applied to integer programming problems is investigated. The two DE variants, namely, self-adaptive DE (SDE) and DE using the ring neighborhood topology (a.k.a. DE/lbest/1) are compared with the standard DE and particle swarm optimization (PSO) methods on several integer programming test problems. The results show that the SDE seems to be an efficient alternative for solving integer programming problems.