Research Article
Omni-Channel Product Distribution Network Design by Using the Improved Particle Swarm Optimization Algorithm
Table 2
Comparison of different kinds of algorithms.
| | | CPLEX | Improved PSO | Gap | Scale of the study | Obj. | CPU(s) | Obj. | CPU(s) | [-]/ | | | | | | |
| Change in demand =0 | 1-1-2-4-10 (2+8) | 155118311.9 | 9.95 | 155118311.9 | 13.31 | 0.00% | 2-2-4-10-35 (4+31) | 4850885922 | 26.8 | 4861980932 | 29.03 | 0.23% | 2-2-6-14-55 (5+50) | 5181467988 | 45 | 5213955899 | 42 | 0.63% | 2-4-12-22-85 (7+78) | 5318725918 | 304.1 | 5363403216 | 77.06 | 0.84% | | 3-5-18-70-205 (10+195) | 5619609011 | >3600 | 5672995297 | 503 | 0.95% |
| Change in demand =0.01 | 1-1-2-4-10 (2+8) | 155478693.3 | 9.95 | 155478693.3 | 11.71 | 0.00% | 2-2-4-10-35 (4+31) | 4905668616 | 23.45 | 4913027119 | 28.57 | 0.15% | 2-2-6-14-55 (5+50) | 5193458934 | 49 | 5224634879 | 44.54 | 0.60% | 2-4-12-22-85 (7+78) | 5304694312 | 325 | 5350314683 | 83.86 | 0.86% | | 3-5-18-70-205 (10+195) | 5608465011 | >3600 | 5666793047 | 524 | 1.04% |
| Change in demand =0.05 | 1-1-2-4-10 (2+8) | 155446843.3 | 9.9 | 155446843.3 | 8.63 | 0.00% | 2-2-4-10-35 (4+31) | 4902814227 | 23.75 | 4913110137 | 24.77 | 0.21% | 2-2-6-14-55 (5+50) | 5220507224 | 45.73 | 5231902083 | 38.29 | 0.22% | 2-4-12-22-85 (7+78) | 5342902440 | 341.6 | 5392591433 | 76.8 | 0.93% | | 3-5-18-70-205 (10+195) | 5621433450 | >3600 | 5685517791 | 537 | 1.14% |
| Change in demand =0.1 | 1-1-2-4-10 (2+8) | 155867650.3 | 9.95 | 155867650.3 | 12.71 | 0.00% | 2-2-4-10-35 (4+31) | 4928341567 | 29.9 | 4941648089 | 27.94 | 0.27% | 2-2-6-14-55 (5+50) | 5210996332 | 57.91 | 5233955899 | 48.36 | 0.44% | 2-4-12-22-85 (7+78) | 5339691338 | 364.7 | 5389350467 | 74.74 | 0.93% | | 3-5-18-70-205 (10+195) | 5620433450 | >3600 | 5691250911 | 556 | 1.26% |
| Average value | | | | | | 0.53% |
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