Local models--an approach to distributed multi-objective optimization

  • Authors:
  • Lam T. Bui;Hussein A. Abbass;Daryl Essam

  • Affiliations:
  • The Artificial Life and Adaptive Robotics Laboratory, School of ITEE, University of New South Wales at Australian Defence Force Academy, Canberra, Australia 2600;The Artificial Life and Adaptive Robotics Laboratory, School of ITEE, University of New South Wales at Australian Defence Force Academy, Canberra, Australia 2600;The Artificial Life and Adaptive Robotics Laboratory, School of ITEE, University of New South Wales at Australian Defence Force Academy, Canberra, Australia 2600

  • Venue:
  • Computational Optimization and Applications
  • Year:
  • 2009

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Abstract

When solving real-world optimization problems, evolutionary algorithms often require a large number of fitness evaluations in order to converge to the global optima. Attempts have been made to find techniques to reduce the number of fitness function evaluations. We propose a novel framework in the context of multi-objective optimization where fitness evaluations are distributed by creating a limited number of adaptive spheres spanning the search space. These spheres move towards the global Pareto front as components of a swarm optimization system. We call this process localization. The contribution of the paper is a general framework for distributed evolutionary multi-objective optimization, in which the individuals in each sphere can be controlled by any existing evolutionary multi-objective optimization algorithm in the literature.