Global optimization using hybrid approach

  • Authors:
  • Ting-Yu Chen;Yi Liang Cheng

  • Affiliations:
  • Department of Mechanical Engineering, National Chung Hsing University, Taichung, Taiwan;Department of Mechanical Engineering, National Chung Hsing University, Taichung, Taiwan

  • Venue:
  • WSEAS Transactions on Mathematics
  • Year:
  • 2008

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Abstract

The paper deals with a global optimization algorithm using hybrid approach. To take the advantage of global search capability the evolution strategy (ES) with some modifications in recombination formulas and elites keeping is used first to find the near-optimal solutions. The sequential quadratic programming (SQP) is then used to find the exact solution from the solutions found by ES. One merit of the algorithm is that the solutions for multimodal problems can be found in a single run. Eight popular test problems are used to test the proposed algorithm. The results are satisfactory in quality and efficiency.