%0 Journal Article %T Multi/Many-Objective Particle Swarm Optimization Algorithm Based on Competition Mechanism %A Chen %A Li %A Wang %A Yi %A Yang %A Wusi %A Zhang %A Maosheng %J - %D 2020 %R https://doi.org/10.1155/2020/5132803 %X The recently proposed multiobjective particle swarm optimization algorithm based on competition mechanism algorithm cannot effectively deal with many-objective optimization problems, which is characterized by relatively poor convergence and diversity, and long computing runtime. In this paper, a novel multi/many-objective particle swarm optimization algorithm based on competition mechanism is proposed, which maintains population diversity by the maximum and minimum angle between ordinary and extreme individuals. And the recently proposed -dominance is adopted to further enhance the performance of the algorithm. The proposed algorithm is evaluated on the standard benchmark problems DTLZ, WFG, and UF1-9 and compared with the four recently proposed multiobjective particle swarm optimization algorithms and four state-of-the-art many-objective evolutionary optimization algorithms. The experimental results indicate that the proposed algorithm has better convergence and diversity, and its performance is superior to other comparative algorithms on most test instances %U https://www.hindawi.com/journals/cin/2020/5132803/