Research Article

A Decomposition Heuristic for the Maximal Covering Location Problem

Table 1

Computation times for SJC instances, .

k = 10k = 50

npOptimalGapLPCPUCutsGapCPUSeqCPUParCutsGapCPUSeqCPUPar

3242073020.0000.0152960.0002.5432.53714490.0009.8759.739
3091270.0270.0470.02724.65024.6350.02744.59641.101
40104430.1560.1880.10825.98525.9690.15745.12242.353
50113970.1800.3910.13824.45224.4220.19543.74843.459
60119910.1840.2350.02444.51444.4210.22148.04947.909
80121520.0000.0310.0008.8768.8160.003109.129108.115
108121520.0000.0160.0001.5951.5952.97726.53326.487

50040133400.0000.0471080.0003.4533.3618040.00017.18611.499
50147730.0140.0470.0004.9384.5140.01459.01936.293
60159190.0480.0630.0008.2337.2430.04857.15734.737
70169080.0000.0310.0003.7233.3700.00022.89114.421
80177490.0000.0150.0005.4064.7660.00026.68616.697
100189120.0980.1090.00010.2767.1710.05662.07137.748
130196640.0410.2970.01530.82724.5880.04169.93443.373
167197060.0050.0470.00314.60014.2350.00546.07835.414

81880233250.0550.1401660.00345.56421.88016490.06185.92245.819
90244550.1230.2660.04156.38824.7470.14387.79747.001
100254350.1270.3440.01287.27934.4810.14096.12452.060
120269820.0840.2970.01569.65831.3680.062105.54754.658
140280020.1400.3590.09552.96626.2710.128121.12763.713
160286990.1280.3910.10758.45324.9040.12696.01750.828
200291530.0180.2340.01161.53128.3010.039253.908135.048
273291680.0000.0310.0003.3432.5450.55446.76637.178