Journal
ENGINEERING APPLICATIONS OF ARTIFICIAL INTELLIGENCE
Volume 112, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.engappai.2022.104866
Keywords
Multi-modal multi-objective; K-means clustering; Short-term memory; Dynamic inertia weight; Elite archiving
Categories
Funding
- State Key Laboratory of Digital Manufacturing Equipment and Technology of China [DMETKF2021024]
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This paper proposes an improved multi-objective particle swarm optimizer, called MOPSO-SMK, to solve multi-modal multi-objective optimization problems where the same PF may correspond to multiple different PSs. By introducing short-term memory and K-means clustering, the algorithm achieves better performance compared to other three multi-objective optimization algorithms in terms of four indexes.
To solve the multi-modal multi-objective optimization problems in which the same Pareto Front (PF) may correspond to multiple different Pareto Optimal Sets (PSs), an improved multi-objective particle swarm optimizer with short-term memory and K-means clustering (MOPSO-SMK) is proposed in this paper. According to the framework of multi-objective particle swarm optimization (MOPSO) algorithm, the designs of updating mechanism and population maintenance mechanism are the keys to obtain the optimal solutions. As a significant influence factor of the updating mechanism, the inertia weight has been discussed in this paper. In the improved algorithm, a new update model for the value of pbest based on short-term memory is proposed. The update strategies based on K-means clustering are adopted to obtain the better gbest and elite archive. 16 multi-modal multi-objective optimization functions are used to verify the feasibility and effectiveness of the proposed MOPSO-SMK. As the results show, MOPSO-SMK has more advantages in four indexes (1/PSP, 1/HV, IGDX, and IGDF) compared with other three multi-objective optimization algorithms.
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