Non-dominated sorting genetic algorithm with decomposition to solve constrained optimisation problems Online publication date: Mon, 31-Mar-2014
by Sanyou Zeng; Dong Zhou; Hui Li
International Journal of Bio-Inspired Computation (IJBIC), Vol. 5, No. 3, 2013
Abstract: Pareto-domination was adopted to handle not only trade-off between objective and constraints but also trade-off between convergence and diversity on solving a constrained optimisation problem (COP) in this paper like many other researchers. But there are some differences. This paper converts a COP into an equivalent dynamic constrained multi-objective optimisation problem (DCMOP) first, then dynamic version of non-dominated sorting genetic algorithm with decomposition (NSGA/D) is designed to solve the equivalent DCMOP, consequently solve the COP. A key issue for the NSGA/D working effectively is that the environmental change should not destroy the feasibility of the population. With a feasible population, the NSGA/D could solve well the DCMOP just as a MOEA usually can solve well an unconstrained MOP. Experimental results show that the NSGA/D outperforms or performs similarly to other state-of-the-art algorithms referred to in this paper, especially in global search.
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