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.

SizeInstanceBKST2S*T2S* + PRSARSIG
Best objective (s)GapBest objective (s)GapBest objectiveAverage objective (s)GapBest objectiveAverage objective (s)Gap

1145814671.200.6214601.110.1414581464.131.790.0014581458.131.330.00
2137513811.010.4413751.320.0013751376.871.450.0013751375.000.560.00
3211921190.840.0021191.170.0021192128.071.980.0021192119.000.560.00
4159116001.180.5715971.780.3815911597.231.520.0015911592.370.360.00
5184718491.110.1118471.450.0018471848.531.680.0018471847.131.040.00
6208020800.860.0020801.370.0020802080.000.210.0020802080.000.110.00
7184118451.250.2218411.560.0018411841.801.360.0018411841.000.650.00
8202520261.180.0520261.700.0520252025.870.570.0020252025.630.490.00
9188018881.060.4318801.480.0018801880.470.780.0018801880.000.250.00
10188319050.711.1718921.590.4818841889.270.990.0518831883.100.260.00

1468946931.650.0946892.820.0046894689.131.020.0046894689.071.210.00
2546754831.370.2954672.810.0054675467.130.980.0054675472.532.010.00
3549954991.920.0054992.670.0054995499.000.370.0054995499.000.230.00
4416541891.760.5841793.650.3441654170.371.320.0041654171.801.790.00
5547854841.390.1154782.730.0054785478.000.670.0054785478.070.800.00
6559555991.450.0755952.560.0055955595.270.900.0055955595.000.220.00
7487049021.900.6648823.820.2548704878.471.340.0048704877.571.320.00
8355235651.540.3735522.790.0035523552.501.250.0035523562.402.400.00
9427342771.670.0942752.750.0542734276.202.460.0042734273.471.410.00
10573957391.850.0057392.650.0057395739.000.400.0057395739.000.220.00

1284628463.600.0028464.780.0028462853.732.560.0028462846.972.090.00
2288328873.030.1428834.940.0028832888.632.700.0028832883.131.630.00
3382538404.310.3938335.570.2138313837.072.570.1638253829.701.330.00
4295329772.510.8129714.310.6129532966.731.640.0729512955.500.700.00
5379738033.750.1638013.560.1137973799.731.490.0037973797.400.440.00
6378337832.590.0037833.700.0037833783.000.680.0037833783.000.720.00
7377437742.430.0037743.840.0037743774.001.100.0037743774.000.630.00
8386238642.090.0538633.950.0338623864.172.180.0038623862.931.850.00
9359135973.030.1735915.260.0035913592.932.390.0035913591.932.270.00
10362336582.610.9736354.730.3336303638.072.330.1936233633.601.420.00

1274227458.090.1127457.310.1127442747.702.500.0727422744.901.700.00
2252725498.230.8725346.100.2825272535.201.980.0025272528.901.060.00
3254425456.200.0425456.530.0425442549.572.380.0025442552.172.360.00
4331533157.000.0033155.590.0033153316.131.830.0033153321.232.630.00
5310931477.661.2231236.120.4531113120.101.570.0631093109.200.240.00
6228322836.480.0022836.540.0022832283.070.840.0022832283.000.380.00
7214421465.040.0921469.170.0921442150.672.700.0021442144.000.830.00
8272027434.980.8527265.180.2227202725.131.380.0027202720.030.730.00
9214921626.500.6021626.500.6021522158.531.350.1421492154.130.420.00
10281428155.450.0428156.050.0428142814.571.080.0028142820.071.860.00

1575357611.990.1457533.120.0057535753.701.570.0057535753.000.960.00
2688468842.670.0068843.200.0068846884.000.810.0068846884.000.420.00
3678067822.170.0367804.250.0067806780.000.820.0067806780.000.740.00
4509251052.300.2651052.300.2650925101.871.750.0050925100.572.080.00
5671567152.470.0067153.180.0067156715.000.600.0067156715.000.660.00
6661666182.450.0366163.530.0066166616.331.360.0066166616.000.500.00
7601160112.660.0060114.750.0060116011.000.600.0060116014.531.730.00
8438544062.640.4843853.770.0043854385.000.540.0043854396.902.360.00
9523552352.170.0052353.990.0052355238.202.840.0052355235.731.930.00
10725572812.220.3672813.620.3672557255.000.120.0072557255.000.060.00

1370737244.400.4637159.260.2237093714.732.120.0537073707.770.740.00
2414741916.391.0641726.700.6041504166.301.640.0741474151.870.940.00
3427342906.780.4042815.900.1942754282.302.140.0542734274.901.560.00
4391039165.320.1539167.150.1539113914.001.680.0339103911.670.730.00
5425142643.990.3142616.230.2442514259.671.860.0042514261.932.200.00
6572757316.560.0757294.390.0357275729.071.870.0057275727.570.780.00
7371937496.610.8137438.280.6537213739.571.710.0537193726.470.420.00
8458246006.960.3945866.960.0945824588.172.340.0045824584.971.490.00
9397940115.390.8040045.390.6339853995.471.040.1539793985.070.470.00
10410741255.660.4441157.370.1941074116.832.600.0041074109.671.200.00