Modified movement force vector in an electromagnetism-like mechanism for global optimization

Authors:
Ana Maria A. C. Rocha;Edite M. G. P. Fernandes
Affiliations:
Department of Production and Systems, School of Engineering, University of Minho, Braga, Portugal;Department of Production and Systems, School of Engineering, University of Minho, Braga, Portugal
Venue:
Optimization Methods & Software - THE JOINT EUROPT-OMS CONFERENCE ON OPTIMIZATION, 4-7 JULY, 2007, PRAGUE, CZECH REPUBLIC, PART II
Year:
2009

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Abstract

This paper presents an algorithm for solving global optimization problems with bounded variables. The algorithm is a modification of the electromagnetism-like mechanism proposed by Birbil and Fang [An electromagnetism-like mechanism for global optimization, J. Global Optim. 25 (2003), pp. 263-282]. The differences are mainly on the local search procedure and on the force vector used to move each point in the population. Several widely-used benchmark problems were solved in a performance evaluation of the new algorithm when compared with the original one. A comparison with other stochastic methods is also included. The algorithm seems appropriate for large dimension problems.