Research Article
Minimizing the Total Service Time of Discrete Dynamic Berth Allocation Problem by an Iterated Greedy Heuristic
Table 3
Computational result for I2 problem set.
| Instance | GSPP |
SARS |
IG | Optimal | Time | Best objective | Time to obtain the optimal | Best objective | Time to obtain the optimal |
| | 759 | 5.99 | 759 | 0.04 | 759 | 0.01 | | 964 | 3.70 | 964 | 0.16 | 964 | 0.08 | | 970 | 2.95 | 970 | 0.63 | 970 | 0.10 | | 688 | 2.72 | 688 | 0.10 | 688 | 0.03 | | 955 | 6.97 | 955 | 0.32 | 955 | 0.38 | | 1129 | 3.10 | 1129 | 0.01 | 1129 | 0.01 | | 835 | 2.31 | 835 | 0.01 | 835 | 0.00 | | 627 | 1.92 | 627 | 0.03 | 627 | 0.03 | | 752 | 4.76 | 752 | 0.07 | 752 | 0.20 | | 1073 | 6.38 | 1073 | 0.59 | 1073 | 0.20 |
| | 657 | 3.62 | 657 | 0.00 | 657 | 0.01 | | 662 | 3.15 | 662 | 0.03 | 662 | 0.00 | | 807 | 4.28 | 807 | 0.20 | 807 | 0.56 | | 648 | 3.78 | 648 | 0.59 | 648 | 0.14 | | 725 | 3.85 | 725 | 0.02 | 725 | 0.19 | | 794 | 3.60 | 794 | 0.01 | 794 | 0.02 | | 734 | 3.54 | 734 | 0.21 | 734 | 0.03 | | 768 | 3.93 | 768 | 0.07 | 768 | 0.05 | | 749 | 3.73 | 749 | 0.02 | 749 | 0.00 | | 825 | 3.82 | 825 | 0.02 | 825 | 0.01 |
| | 713 | 5.83 | 713 | 0.04 | 713 | 0.02 | | 727 | 6.99 | 727 | 0.15 | 727 | 0.01 | | 761 | 6.12 | 761 | 0.24 | 761 | 0.16 | | 810 | 5.38 | 810 | 0.19 | 810 | 0.20 | | 840 | 6.77 | 840 | 0.10 | 840 | 0.06 | | 689 | 5.57 | 689 | 0.01 | 689 | 0.04 | | 666 | 5.83 | 666 | 0.00 | 666 | 0.00 | | 855 | 5.87 | 855 | 0.01 | 855 | 0.01 | | 711 | 5.38 | 711 | 0.15 | 711 | 0.01 | | 801 | 5.96 | 801 | 0.04 | 801 | 0.09 |
| | 1000 | 12.57 | 1000 | 11.59 | 1000 | 0.37 | | 1192 | 15.93 | 1192 | 9.07 | 1192 | 1.35 | | 1201 | 7.16 | 1201 | 3.81 | 1201 | 0.47 | | 1139 | 13.59 | 1139 | 1.65 | 1139 | 0.47 | | 1164 | 11.50 | 1164 | 2.25 | 1164 | 1.26 | | 1686 | 29.16 | 1686 | 8.31 | 1686 | 2.02 | | 1176 | 12.89 | 1176 | 1.40 | 1176 | 0.41 | | 1318 | 17.52 | 1318 | 4.95 | 1318 | 0.34 | | 1245 | 8.41 | 1245 | 0.59 | 1245 | 0.25 | | 1109 | 14.39 | 1109 | 7.30 | 1109 | 0.80 |
| | 1124 | 19.98 | 1124 | 0.19 | 1124 | 0.30 | | 1189 | 11.37 | 1189 | 4.47 | 1189 | 0.87 | | 938 | 8.97 | 938 | 0.13 | 938 | 0.34 | | 1226 | 10.28 | 1226 | 5.63 | 1226 | 0.50 | | 1349 | 22.31 | 1349 | 0.52 | 1349 | 0.27 | | 1188 | 10.92 | 1188 | 0.29 | 1188 | 0.14 | | 1051 | 9.74 | 1051 | 0.21 | 1051 | 0.77 | | 1194 | 9.39 | 1194 | 0.08 | 1194 | 0.06 | | 1311 | 29.45 | 1311 | 0.90 | 1311 | 0.53 | | 1189 | 14.28 | 1189 | 0.05 | 1189 | 0.08 |
| Average | 953.7 | 8.60 | 953.7 | 1.35 | 953.7 | 0.28 |
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