NDLI: Dynamic evolutionary algorithm with variable relocation vectors

Content Provider	IEEE Xplore Digital Library
Author	Woldesenbet, Y.G. Yen, G.G.
Copyright Year	2007
Description	Author affiliation: Oklahoma State Univ., Stillwater (Woldesenbet, Y.G.; Yen, G.G.)
Abstract	Many real-world optimization problems have to be performed under the presence of various uncertainties. A significant number of these uncertainty problems fall into the dynamic optimization category. For this class of problems, an evolutionary algorithm is expected to perform well under different levels and frequencies of change in the landscape. In addition, the dynamic evolutionary algorithm should warrant an acceptable performance improvement to justify the additional computational cost. Effective reuse of previous evolutionary information is a must as it facilitates a faster convergence after a change has occurred. This paper introduces a new dynamic evolutionary algorithm that uses variable relocation vectors to adapt already converged or currently evolving individuals to the new environmental condition. The proposed algorithm relocates those individuals based on their change in functional value due to the change in the environment and the average sensitivities of their decision variables to the corresponding change in the objective space. The relocated population is shown to be better fit to the new environment than the original or any other randomly generated population. The algorithm has been tested for several dynamic benchmark problems and has shown better results.
Starting Page	1748
Ending Page	1755
File Size	250421
Page Count	8
File Format	PDF
ISBN	9781424413393
DOI	10.1109/CEC.2007.4424684
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-09-25
Publisher Place	Singapore
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Evolutionary computation Decision support systems Virtual reality
Content Type	Text
Resource Type	Article

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