PMID- 37884636 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20231029 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 13 IP - 1 DP - 2023 Oct 26 TI - A modified particle swarm optimization algorithm for a vehicle scheduling problem with soft time windows. PG - 18351 LID - 10.1038/s41598-023-45543-z [doi] LID - 18351 AB - This article constructed a vehicle scheduling problem (VSP) with soft time windows for a certain ore company. VSP is a typical NP-hard problem whose optimal solution can not be obtained in polynomial time, and the basic particle swarm optimization(PSO) algorithm has the obvious shortcoming of premature convergence and stagnation by falling into local optima. Thus, a modified particle swarm optimization (MPSO) was proposed in this paper for the numerical calculation to overcome the characteristics of the optimization problem such as: multiple constraints and NP-hard. The algorithm introduced the "elite reverse" strategy into population initialization, proposed an improved adaptive strategy by combining the subtraction function and "ladder strategy" to adjust inertia weight, and added a "jump out" mechanism to escape local optimal. Thus, the proposed algorithm can realize an accurate and rapid solution of the algorithm's global optimization. Finally, this article made typical benchmark functions experiment and vehicle scheduling simulation to verify the algorithm performance. The experimental results of typical benchmark functions proved that the search accuracy and performance of the MPSO algorithm are superior to other algorithms: the basic PSO, the improved particle swarm optimization (IPSO), and the chaotic PSO (CPSO). Besides, the MPSO algorithm can improve an ore company's profit by 48.5-71.8% compared with the basic PSO in the vehicle scheduling simulation. CI - (c) 2023. The Author(s). FAU - Qiao, Jinwei AU - Qiao J AD - School of Mechanical and Automotive Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, People's Republic of China. AD - Shandong Institute of Mechanical Design and Research, Jinan, 250353, People's Republic of China. FAU - Li, Shuzan AU - Li S AD - School of Mechanical and Automotive Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, People's Republic of China. AD - Shandong Institute of Mechanical Design and Research, Jinan, 250353, People's Republic of China. FAU - Liu, Ming AU - Liu M AD - School of Mechanical and Automotive Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, People's Republic of China. AD - Shandong Institute of Mechanical Design and Research, Jinan, 250353, People's Republic of China. FAU - Yang, Zhi AU - Yang Z AD - School of Mechanical and Automotive Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, People's Republic of China. yangzhi@qlu.edu.cn. AD - Shandong Institute of Mechanical Design and Research, Jinan, 250353, People's Republic of China. yangzhi@qlu.edu.cn. FAU - Chen, Jun AU - Chen J AD - School of Mechanical and Automotive Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, People's Republic of China. AD - Shandong Institute of Mechanical Design and Research, Jinan, 250353, People's Republic of China. FAU - Liu, Pengbo AU - Liu P AD - School of Mechanical and Automotive Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, People's Republic of China. AD - Shandong Institute of Mechanical Design and Research, Jinan, 250353, People's Republic of China. FAU - Li, Huiling AU - Li H AD - Shandong Innovation and Development Research Institute, Jinan, 250353, People's Republic of China. FAU - Ma, Chi AU - Ma C AD - Zaozhuang Xinjinshan Intelligent Equipment Co., Ltd, Zaozhuang, 277400, People's Republic of China. LA - eng GR - ZR2020ME116/Key Projects of Natural Science Foundation of Shandong Province/ GR - 2022TSGC2051/The Innovation Ability Improvement Project for Technology-based Small- and Medium-sized Enterprises of Shandong Province/ GR - 2023TSGC0024/The Innovation Ability Improvement Project for Technology-based Small- and Medium-sized Enterprises of Shandong Province/ GR - 2023TSGC0931/The Innovation Ability Improvement Project for Technology-based Small- and Medium-sized Enterprises of Shandong Province/ GR - 2021CXGC010207/Key R\&D plan of Shandong Province, China/ PT - Journal Article DEP - 20231026 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 SB - IM PMC - PMC10603129 COIS- The authors declare no competing interests. EDAT- 2023/10/27 00:42 MHDA- 2023/10/27 00:43 PMCR- 2023/10/26 CRDT- 2023/10/26 23:33 PHST- 2023/08/13 00:00 [received] PHST- 2023/10/20 00:00 [accepted] PHST- 2023/10/27 00:43 [medline] PHST- 2023/10/27 00:42 [pubmed] PHST- 2023/10/26 23:33 [entrez] PHST- 2023/10/26 00:00 [pmc-release] AID - 10.1038/s41598-023-45543-z [pii] AID - 45543 [pii] AID - 10.1038/s41598-023-45543-z [doi] PST - epublish SO - Sci Rep. 2023 Oct 26;13(1):18351. doi: 10.1038/s41598-023-45543-z.