Considering the advantages of the partcile swarm optimization (PSO), this paper probes deep into the improvement of the traditional PSO algorithm and its application in leather workshop scheduling. Firstly, the online scheduling of no-wait supply chain was described in details, while improving the PSO algorithm. On this basis, the author proposed an online no-wait scheduling algorithm based on the improved PSO for leather workshop supply chain. After that, the proposed algorithm was used to schedule an example leather workshop. The results show that our algorithm can find the optimal processing plan with a small swarm and through a limited number of iterations, despite the huge amount of orders..

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