J4 ›› 2013, Vol. 40 ›› Issue (3): 87-94.doi: 10.3969/j.issn.1001-2400.2013.03.013

• Original Articles • Previous Articles     Next Articles

Improved electromagnetism-like mechanism algorithm

JIANG Jianguo1;LIU Yongqing1;SHANG Haibao1;LIN Longjun1;WANG Shuangji1,2   

  1. (1. School of Computer Science and Technology, Xidian Univ., Xi'an  710071, China;
    2. No.91388 Troops of PLA, Zhanjiang  524022, China)
  • Received:2012-01-01 Online:2013-06-20 Published:2013-07-29
  • Contact: JIANG Jianguo E-mail:jgjiang@mail.xidian.edu.cn

Abstract:

Based on the principle of the electromagnetism-like mechanism(EM) algorithm, the algorithm's optimization mechanism is studied. An improved electromagnetism-like mechanism algorithm is proposed to solve the problems of the original EM algorithm, such as non-uniform initial population, low search efficiency, and pathological feature in the total force formula. The new algorithm generates the initial population with the uniform design method, improves the local search algorithm with the hybrid chaotic pattern search method and calculates the total force between particles with the modified equation. Besides, an adaptive formula of movement is designed to update the locations of those particles. Experimental results show that the improved algorithm has a better convergence result and a higher solution accuracy.

Key words: electromagnetism-like mechanism algorithm, uniform design, chaos search, pattern search, global optimization

CLC Number: 

  • TP301.6