A self-adaptive dynamic multi-objective optimization algorithm based on transfer learning and elitism-based mutation

Dynamic multi-objective optimization problems (DMOPs) involve several conflicting objectives, and these objective functions change over time. Therefore, addressing DMOPs necessitates an effective response to environmental changes. However, most existing algorithms only deal with DMOPs with one parti...

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Bibliographic Details
Published in:Neurocomputing (Amsterdam) Vol. 559; p. 126761
Main Authors: Zhang, Xi, Jin, Yaochu, Qian, Feng
Format: Journal Article
Language:English
Published: Elsevier B.V 28.11.2023
Subjects:
Diversity introduction
Dynamic multi-objective optimization
Self-adaptive change response
Transfer learning
Self-adaptive change response
Diversity introduction
Dynamic multi-objective optimization
Transfer learning
ISSN:0925-2312, 1872-8286
Online Access:Get full text
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Summary:Dynamic multi-objective optimization problems (DMOPs) involve several conflicting objectives, and these objective functions change over time. Therefore, addressing DMOPs necessitates an effective response to environmental changes. However, most existing algorithms only deal with DMOPs with one particular type of environmental changes, whereas real-world dynamic changes are more complicated. Therefore, this paper proposes a self-adaptive DMOEA based on transfer learning and elitism-based mutation (ATM-DMOEA), aiming to efficiently tackle DMOPs exhibiting complex environmental changes. Specifically, a change evaluation method is devised to gauge change intensity and discern whether a change is drastic or gentle. Subsequently, an adaptive change response strategy is implemented to accommodate varying environmental changes. For drastic changes, the algorithm employs an elitism-based manifold transfer learning method, while gentle changes are handled with a diversity enhancement strategy introduced by adaptive elitism-based mutations with a varying mutation probability. The experiments have validated the competitiveness of the proposed ATM-DMOEA on the majority of DMOP test instances with different levels of change severity.
ISSN:0925-2312
1872-8286
DOI:10.1016/j.neucom.2023.126761