Research Article

A Heuristic Algorithm for Constrained Multi-Source Location Problem with Closest Distance under Gauge: The Variational Inequality Approach

Table 4

Numerical results of location-allocation heuristic for CMLP.

Algorithm 9 with Initial. Algorithm 9 without Initial.
Iter.0 Iter.0-PC Iter. Iter.-PC CPU Iter. Iter.-PC CPU

100 2 2.83 73.33 1.20 289.00 0.4868 3.04 176.70 0.7018
4 3.61 99.88 1.29 176.80 0.2652 2.65 218.47 0.4992
6 4.55 99.05 1.53 121.75 0.1710 3.50 130.96 0.2580
8 3.60 126.23 1.82 149.37 0.2250 3.02 170.32 0.2836
10 3.84 138.61 2.26 257.51 0.3212 4.65 240.48 0.5118

200 2 3.24 81.22 1.24 1620.80 5.4664 3.49 1192.33 11.4596
4 4.01 112.96 1.71 447.08 1.2932 4.37 433.10 2.5694
6 4.65 141.10 2.23 262.97 0.7958 3.88 305.75 1.4538
8 4.26 130.25 2.65 246.80 0.6268 4.83 287.12 1.1734
10 4.67 171.65 2.68 281.40 0.5866 4.46 346.18 1.0232

500 2 4.03 82.35 1.63 1998.20 64.5468 4.26 1815.90 139.2036
4 4.66 104.28 2.27 1304.48 12.3492 5.25 1445.82 26.5510
6 5.27 133.55 2.62 727.13 5.3322 7.60 875.26 18.2956
8 7.60 169.97 2.84 549.60 2.8050 5.24 429.83 3.8626
10 5.42 187.95 3.47 508.13 2.3742 5.02 507.70 3.3946

1000 2 4.49 56.69 1.91 718.17 93.2321 5.63 1587.31 365.6085
4 4.81 80.60 2.10 1376.13 46.2636 5.49 1576.85 113.8830
6 6.84 96.75 3.43 683.35 16.1398 7.65 1344.53 57.7762
8 7.20 161.50 3.28 563.69 9.3570 6.06 760.93 20.0896
10 6.63 171.89 4.05 615.07 7.5880 6.47 700.53 12.9448