An efficient multi-objective optimization algorithm based on swarm intelligence for engineering design

Reddy, Janga M and Kumar, Nagesh D (2007) An efficient multi-objective optimization algorithm based on swarm intelligence for engineering design. In: Engineering Optimization, 39 (1). pp. 49-68.

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Abstract

As there is a growing interest in applications of multi-objective optimization methods to real-world problems, it is essential to develop efficient algorithms to achieve better performance in engineering design and resources optimization. An efficient algorithm for multi-objective optimization, based on swarm intelligence principles, is presented in this article. The proposed algorithm incorporates a Pareto dominance relation into particle swarm optimization (PSO). To create effective selection pressure among the non-dominated solutions, it uses a variable size external repository and crowding distance comparison operator.An efficient mutation strategy called elitist-mutation is also incorporated in the algorithm. This strategic mechanism effectively explores the feasible search space and speeds up the search for the true Pareto-optimal region. The proposed approach is tested on various benchmark problems taken from the literature and validated with standard performance measures by comparison with NSGA-II, one of the best multi-objective evolutionary algorithms available at present. It is then applied to three engineering design problems. The results obtained amply demonstrate that the proposed approach is efficient and is able to yield a wide spread of solutions with good coverage and convergence to true Pareto-optimal fronts.

Item Type:	Journal Article
Publication:	Engineering Optimization
Publisher:	Taylor and Francis
Additional Information:	Copyright of this article belongs to Taylor and Francis.
Keywords:	Multi-objective optimization; Swarm intelligence; Particle swarm optimization; Elitist-mutation; Pareto-optimal solutions;Engineering design
Department/Centre:	Division of Mechanical Sciences > Civil Engineering
Date Deposited:	07 Mar 2007
Last Modified:	19 Sep 2010 04:34
URI:	http://eprints.iisc.ac.in/id/eprint/9580

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