• 中国计算机学会会刊
  • 中国科技核心期刊
  • 中文核心期刊

Computer Engineering & Science

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A hybrid SFLA algorithm based on conjugate gradient method
 

PANG Kai-li,LIANG Xi-ming   

  1. (School of Science,Beijing University of Civil Engineering and Architecture,Beijing 100044,China)
  • Received:2016-01-11 Revised:2016-05-03 Online:2017-10-25 Published:2017-10-25

Abstract:

We propose a hybrid shuffled frog leaping algorithm (SFLA) based on the conjugate gradient method to solve
the problem of low solution precision and easy to fall into local optimal solutions of the traditional SFLA.
Since the rules of dividing meme groups make the fitness values of the last frog subgroup too bad, which
affects the searching speed of the SFLA in the whole group, we introduce the conjugate gradient method into
the SFLA. We select the last meme groups to search the solution by using the conjugate gradient method, which
prevents the hybrid SFLA from falling into local optimal solution and improves the convergence accuracy. The
proposed hybrid SFLA algorithm combines the strongly global searing ability of the SFLA with the fast local
searching ability of the conjugate gradient method. Numerical experiment results show that the hybrid SFLA
has a higher convergent precision, more stable optimal results, and jumps out of local optimal solution
easily in comparison with the basic SFLA.
 

Key words: shuffled frog leaping algorithm, conjugate gradient method, numerical experiment, fitness function