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An Active Elitism Mechanism for Multi-objective Evolutionary Algorithms
Engin Ufuk Ergul
Pages - 150 - 166     |    Revised - 01-09-2011     |    Published - 05-10-2011
Volume - 2   Issue - 4    |    Publication Date - September / October 2011  Table of Contents
Evolutionary Algorithms, Active Elitism, Multi-objective Optimization
Classical (or passive) elitism mechanisms in the literature have a holding/sending back structure. In the active elitism mechanism proposed in this paper, a set of elite individuals is excited by genetic operators (crossover/mutation) in archive in the hope of generating better and more diverse individuals than themselves. If a set of excited elites are any better than originals, then archive can be viewed as a place of active solution provider rather than a static storage place. The main motivation behind this approach is that elite individuals are inherently the closest individuals to the solution (of any optimization problem on hand) and exciting those individuals can likely generate more significant outcomes than a far away one. The proposed active elitism mechanism is embedded into well-known multi-objective SPEA and SPEA2 methods (named ACE_SPEA and ACE_SPEA2 respectively) and compared to the original methods using four benchmarks. The active elitist versions of SPEA and SPEA2 maintain better spread and convergence properties than the original methods. The proposed active elitism mechanism can easily be integrated into existing multi-objective evolutionary algorithms.
CITED BY (1)  
1 Maheta, H. H., & Dabhi, V. K. (2014, February). An improved SPEA2 Multi objective algorithm with non dominated elitism and Generational Crossover. In Issues and Challenges in Intelligent Computing Techniques (ICICT), 2014 International Conference on (pp. 75-82). IEEE.
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Dr. Engin Ufuk Ergul
Amasya University - Turkey

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