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2016 | OriginalPaper | Buchkapitel

Convergence Versus Diversity in Multiobjective Optimization

verfasst von : Shouyong Jiang, Shengxiang Yang

Erschienen in: Parallel Problem Solving from Nature – PPSN XIV

Verlag: Springer International Publishing

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Abstract

Convergence and diversity are two main goals in multiobjective optimization. In literature, most existing multiobjective optimization evolutionary algorithms (MOEAs) adopt a convergence-first-and-diversity-second environmental selection which prefers nondominated solutions to dominated ones, as is the case with the popular nondominated sorting based selection method. While convergence-first sorting has continuously shown effectiveness for handling a variety of problems, it faces challenges to maintain well population diversity due to the overemphasis of convergence. In this paper, we propose a general diversity-first sorting method for multiobjective optimization. Based on the method, a new MOEA, called DBEA, is then introduced. DBEA is compared with the recently-developed nondominated sorting genetic algorithm III (NSGA-III) on different problems. Experimental studies show that the diversity-first method has great potential for diversity maintenance and is very competitive for many-objective optimization.

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Fußnoten
1
Note that, although some algorithms like SPEA2 sort individuals by exploiting both convergence and diversity, convergence is priorly considered and emphasised.
 
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Metadaten
Titel
Convergence Versus Diversity in Multiobjective Optimization
verfasst von
Shouyong Jiang
Shengxiang Yang
Copyright-Jahr
2016
DOI
https://doi.org/10.1007/978-3-319-45823-6_92

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