Research Article
Minimizing the Total Service Time of Discrete Dynamic Berth Allocation Problem by an Iterated Greedy Heuristic
Table 6
Computational result for new problem set with unknown optimal solution.
| Size | Instance | BKS | T2S* | T2S* + PR | SARS | IG | Best objective | (s) | Gap | Best objective | (s) | Gap | Best objective | Average objective | (s) | Gap | Best objective | Average objective | (s) | Gap |
| | 1 | 1458 | 1467 | 1.20 | 0.62 | 1460 | 1.11 | 0.14 | 1458 | 1464.13 | 1.79 | 0.00 | 1458 | 1458.13 | 1.33 | 0.00 | 2 | 1375 | 1381 | 1.01 | 0.44 | 1375 | 1.32 | 0.00 | 1375 | 1376.87 | 1.45 | 0.00 | 1375 | 1375.00 | 0.56 | 0.00 | 3 | 2119 | 2119 | 0.84 | 0.00 | 2119 | 1.17 | 0.00 | 2119 | 2128.07 | 1.98 | 0.00 | 2119 | 2119.00 | 0.56 | 0.00 | 4 | 1591 | 1600 | 1.18 | 0.57 | 1597 | 1.78 | 0.38 | 1591 | 1597.23 | 1.52 | 0.00 | 1591 | 1592.37 | 0.36 | 0.00 | 5 | 1847 | 1849 | 1.11 | 0.11 | 1847 | 1.45 | 0.00 | 1847 | 1848.53 | 1.68 | 0.00 | 1847 | 1847.13 | 1.04 | 0.00 | 6 | 2080 | 2080 | 0.86 | 0.00 | 2080 | 1.37 | 0.00 | 2080 | 2080.00 | 0.21 | 0.00 | 2080 | 2080.00 | 0.11 | 0.00 | 7 | 1841 | 1845 | 1.25 | 0.22 | 1841 | 1.56 | 0.00 | 1841 | 1841.80 | 1.36 | 0.00 | 1841 | 1841.00 | 0.65 | 0.00 | 8 | 2025 | 2026 | 1.18 | 0.05 | 2026 | 1.70 | 0.05 | 2025 | 2025.87 | 0.57 | 0.00 | 2025 | 2025.63 | 0.49 | 0.00 | 9 | 1880 | 1888 | 1.06 | 0.43 | 1880 | 1.48 | 0.00 | 1880 | 1880.47 | 0.78 | 0.00 | 1880 | 1880.00 | 0.25 | 0.00 | 10 | 1883 | 1905 | 0.71 | 1.17 | 1892 | 1.59 | 0.48 | 1884 | 1889.27 | 0.99 | 0.05 | 1883 | 1883.10 | 0.26 | 0.00 |
| | 1 | 4689 | 4693 | 1.65 | 0.09 | 4689 | 2.82 | 0.00 | 4689 | 4689.13 | 1.02 | 0.00 | 4689 | 4689.07 | 1.21 | 0.00 | 2 | 5467 | 5483 | 1.37 | 0.29 | 5467 | 2.81 | 0.00 | 5467 | 5467.13 | 0.98 | 0.00 | 5467 | 5472.53 | 2.01 | 0.00 | 3 | 5499 | 5499 | 1.92 | 0.00 | 5499 | 2.67 | 0.00 | 5499 | 5499.00 | 0.37 | 0.00 | 5499 | 5499.00 | 0.23 | 0.00 | 4 | 4165 | 4189 | 1.76 | 0.58 | 4179 | 3.65 | 0.34 | 4165 | 4170.37 | 1.32 | 0.00 | 4165 | 4171.80 | 1.79 | 0.00 | 5 | 5478 | 5484 | 1.39 | 0.11 | 5478 | 2.73 | 0.00 | 5478 | 5478.00 | 0.67 | 0.00 | 5478 | 5478.07 | 0.80 | 0.00 | 6 | 5595 | 5599 | 1.45 | 0.07 | 5595 | 2.56 | 0.00 | 5595 | 5595.27 | 0.90 | 0.00 | 5595 | 5595.00 | 0.22 | 0.00 | 7 | 4870 | 4902 | 1.90 | 0.66 | 4882 | 3.82 | 0.25 | 4870 | 4878.47 | 1.34 | 0.00 | 4870 | 4877.57 | 1.32 | 0.00 | 8 | 3552 | 3565 | 1.54 | 0.37 | 3552 | 2.79 | 0.00 | 3552 | 3552.50 | 1.25 | 0.00 | 3552 | 3562.40 | 2.40 | 0.00 | 9 | 4273 | 4277 | 1.67 | 0.09 | 4275 | 2.75 | 0.05 | 4273 | 4276.20 | 2.46 | 0.00 | 4273 | 4273.47 | 1.41 | 0.00 | 10 | 5739 | 5739 | 1.85 | 0.00 | 5739 | 2.65 | 0.00 | 5739 | 5739.00 | 0.40 | 0.00 | 5739 | 5739.00 | 0.22 | 0.00 |
| | 1 | 2846 | 2846 | 3.60 | 0.00 | 2846 | 4.78 | 0.00 | 2846 | 2853.73 | 2.56 | 0.00 | 2846 | 2846.97 | 2.09 | 0.00 | 2 | 2883 | 2887 | 3.03 | 0.14 | 2883 | 4.94 | 0.00 | 2883 | 2888.63 | 2.70 | 0.00 | 2883 | 2883.13 | 1.63 | 0.00 | 3 | 3825 | 3840 | 4.31 | 0.39 | 3833 | 5.57 | 0.21 | 3831 | 3837.07 | 2.57 | 0.16 | 3825 | 3829.70 | 1.33 | 0.00 | 4 | 2953 | 2977 | 2.51 | 0.81 | 2971 | 4.31 | 0.61 | 2953 | 2966.73 | 1.64 | 0.07 | 2951 | 2955.50 | 0.70 | 0.00 | 5 | 3797 | 3803 | 3.75 | 0.16 | 3801 | 3.56 | 0.11 | 3797 | 3799.73 | 1.49 | 0.00 | 3797 | 3797.40 | 0.44 | 0.00 | 6 | 3783 | 3783 | 2.59 | 0.00 | 3783 | 3.70 | 0.00 | 3783 | 3783.00 | 0.68 | 0.00 | 3783 | 3783.00 | 0.72 | 0.00 | 7 | 3774 | 3774 | 2.43 | 0.00 | 3774 | 3.84 | 0.00 | 3774 | 3774.00 | 1.10 | 0.00 | 3774 | 3774.00 | 0.63 | 0.00 | 8 | 3862 | 3864 | 2.09 | 0.05 | 3863 | 3.95 | 0.03 | 3862 | 3864.17 | 2.18 | 0.00 | 3862 | 3862.93 | 1.85 | 0.00 | 9 | 3591 | 3597 | 3.03 | 0.17 | 3591 | 5.26 | 0.00 | 3591 | 3592.93 | 2.39 | 0.00 | 3591 | 3591.93 | 2.27 | 0.00 | 10 | 3623 | 3658 | 2.61 | 0.97 | 3635 | 4.73 | 0.33 | 3630 | 3638.07 | 2.33 | 0.19 | 3623 | 3633.60 | 1.42 | 0.00 |
| | 1 | 2742 | 2745 | 8.09 | 0.11 | 2745 | 7.31 | 0.11 | 2744 | 2747.70 | 2.50 | 0.07 | 2742 | 2744.90 | 1.70 | 0.00 | 2 | 2527 | 2549 | 8.23 | 0.87 | 2534 | 6.10 | 0.28 | 2527 | 2535.20 | 1.98 | 0.00 | 2527 | 2528.90 | 1.06 | 0.00 | 3 | 2544 | 2545 | 6.20 | 0.04 | 2545 | 6.53 | 0.04 | 2544 | 2549.57 | 2.38 | 0.00 | 2544 | 2552.17 | 2.36 | 0.00 | 4 | 3315 | 3315 | 7.00 | 0.00 | 3315 | 5.59 | 0.00 | 3315 | 3316.13 | 1.83 | 0.00 | 3315 | 3321.23 | 2.63 | 0.00 | 5 | 3109 | 3147 | 7.66 | 1.22 | 3123 | 6.12 | 0.45 | 3111 | 3120.10 | 1.57 | 0.06 | 3109 | 3109.20 | 0.24 | 0.00 | 6 | 2283 | 2283 | 6.48 | 0.00 | 2283 | 6.54 | 0.00 | 2283 | 2283.07 | 0.84 | 0.00 | 2283 | 2283.00 | 0.38 | 0.00 | 7 | 2144 | 2146 | 5.04 | 0.09 | 2146 | 9.17 | 0.09 | 2144 | 2150.67 | 2.70 | 0.00 | 2144 | 2144.00 | 0.83 | 0.00 | 8 | 2720 | 2743 | 4.98 | 0.85 | 2726 | 5.18 | 0.22 | 2720 | 2725.13 | 1.38 | 0.00 | 2720 | 2720.03 | 0.73 | 0.00 | 9 | 2149 | 2162 | 6.50 | 0.60 | 2162 | 6.50 | 0.60 | 2152 | 2158.53 | 1.35 | 0.14 | 2149 | 2154.13 | 0.42 | 0.00 | 10 | 2814 | 2815 | 5.45 | 0.04 | 2815 | 6.05 | 0.04 | 2814 | 2814.57 | 1.08 | 0.00 | 2814 | 2820.07 | 1.86 | 0.00 |
| | 1 | 5753 | 5761 | 1.99 | 0.14 | 5753 | 3.12 | 0.00 | 5753 | 5753.70 | 1.57 | 0.00 | 5753 | 5753.00 | 0.96 | 0.00 | 2 | 6884 | 6884 | 2.67 | 0.00 | 6884 | 3.20 | 0.00 | 6884 | 6884.00 | 0.81 | 0.00 | 6884 | 6884.00 | 0.42 | 0.00 | 3 | 6780 | 6782 | 2.17 | 0.03 | 6780 | 4.25 | 0.00 | 6780 | 6780.00 | 0.82 | 0.00 | 6780 | 6780.00 | 0.74 | 0.00 | 4 | 5092 | 5105 | 2.30 | 0.26 | 5105 | 2.30 | 0.26 | 5092 | 5101.87 | 1.75 | 0.00 | 5092 | 5100.57 | 2.08 | 0.00 | 5 | 6715 | 6715 | 2.47 | 0.00 | 6715 | 3.18 | 0.00 | 6715 | 6715.00 | 0.60 | 0.00 | 6715 | 6715.00 | 0.66 | 0.00 | 6 | 6616 | 6618 | 2.45 | 0.03 | 6616 | 3.53 | 0.00 | 6616 | 6616.33 | 1.36 | 0.00 | 6616 | 6616.00 | 0.50 | 0.00 | 7 | 6011 | 6011 | 2.66 | 0.00 | 6011 | 4.75 | 0.00 | 6011 | 6011.00 | 0.60 | 0.00 | 6011 | 6014.53 | 1.73 | 0.00 | 8 | 4385 | 4406 | 2.64 | 0.48 | 4385 | 3.77 | 0.00 | 4385 | 4385.00 | 0.54 | 0.00 | 4385 | 4396.90 | 2.36 | 0.00 | 9 | 5235 | 5235 | 2.17 | 0.00 | 5235 | 3.99 | 0.00 | 5235 | 5238.20 | 2.84 | 0.00 | 5235 | 5235.73 | 1.93 | 0.00 | 10 | 7255 | 7281 | 2.22 | 0.36 | 7281 | 3.62 | 0.36 | 7255 | 7255.00 | 0.12 | 0.00 | 7255 | 7255.00 | 0.06 | 0.00 |
| | 1 | 3707 | 3724 | 4.40 | 0.46 | 3715 | 9.26 | 0.22 | 3709 | 3714.73 | 2.12 | 0.05 | 3707 | 3707.77 | 0.74 | 0.00 | 2 | 4147 | 4191 | 6.39 | 1.06 | 4172 | 6.70 | 0.60 | 4150 | 4166.30 | 1.64 | 0.07 | 4147 | 4151.87 | 0.94 | 0.00 | 3 | 4273 | 4290 | 6.78 | 0.40 | 4281 | 5.90 | 0.19 | 4275 | 4282.30 | 2.14 | 0.05 | 4273 | 4274.90 | 1.56 | 0.00 | 4 | 3910 | 3916 | 5.32 | 0.15 | 3916 | 7.15 | 0.15 | 3911 | 3914.00 | 1.68 | 0.03 | 3910 | 3911.67 | 0.73 | 0.00 | 5 | 4251 | 4264 | 3.99 | 0.31 | 4261 | 6.23 | 0.24 | 4251 | 4259.67 | 1.86 | 0.00 | 4251 | 4261.93 | 2.20 | 0.00 | 6 | 5727 | 5731 | 6.56 | 0.07 | 5729 | 4.39 | 0.03 | 5727 | 5729.07 | 1.87 | 0.00 | 5727 | 5727.57 | 0.78 | 0.00 | 7 | 3719 | 3749 | 6.61 | 0.81 | 3743 | 8.28 | 0.65 | 3721 | 3739.57 | 1.71 | 0.05 | 3719 | 3726.47 | 0.42 | 0.00 | 8 | 4582 | 4600 | 6.96 | 0.39 | 4586 | 6.96 | 0.09 | 4582 | 4588.17 | 2.34 | 0.00 | 4582 | 4584.97 | 1.49 | 0.00 | 9 | 3979 | 4011 | 5.39 | 0.80 | 4004 | 5.39 | 0.63 | 3985 | 3995.47 | 1.04 | 0.15 | 3979 | 3985.07 | 0.47 | 0.00 | 10 | 4107 | 4125 | 5.66 | 0.44 | 4115 | 7.37 | 0.19 | 4107 | 4116.83 | 2.60 | 0.00 | 4107 | 4109.67 | 1.20 | 0.00 |
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