本文提出变量随机分解策略，增加关联变量分配到同组的概率，使得算法更好的保留变量间的关联性，并将合作协同进化框架融合到算法中，提出了基于大规模变量分解的多目标粒子群优化算法-In this paper, a stochastic variable decomposition strategy is proposed to increase the probability of assigning related variables to the same group, which makes the algorithm better preserve the correlation between variables. The cooperative co-evolution framework is integrated into the algorithm, and a multi-objective decomposition based on large- Particle swarm optimization algorithm