TABLE 2
FROM:
Raw material inventory solution in iron and steel industry using Lagrangian relaxation
L Tang, G Liu and J Liu
BACK TO ARTICLETable 2. Average duality gap (%) of our method
| Number of raw materials | Number of raw material groups | ||||
|---|---|---|---|---|---|
| 2 | 3 | 5 | 8 | 10 | |
| 4 | 0.016664 | ||||
| 6 | 0.737173 | 0.096731 | |||
| 8 | 0.013334 | 0.040305 | |||
| 10 | 0.009391 | 0.078186 | 0.476428 | ||
| 20 | 0.004203 | 0.004371 | 0.094818 | 0.812137 | 0.722313 |
| 30 | 0.003634 | 0.005042 | 0.504785 | 0.455958 | 0.514772 |
| 40 | 0.003676 | 0.004381 | 0.023636 | 0.493823 | 0.369827 |
| 50 | 0.003889 | 0.009497 | 0.008296 | 0.212416 | 0.788269 |
| 60 | 0.004054 | 0.003773 | 0.004827 | 0.336061 | 0.331341 |
| 70 | 0.003267 | 0.003783 | 0.031582 | 0.098539 | 0.147511 |
| 80 | 0.003597 | 0.004074 | 0.049304 | 0.161772 | 0.106913 |
| 90 | 0.003757 | 0.004349 | 0.004813 | 0.106769 | 0.232951 |
| 100 | 0.004077 | 0.003907 | 0.004521 | 0.005471 | 0.040730 |
| 110 | 0.003526 | 0.023673 | 0.004109 | 0.052178 | 0.035269 |
| 120 | 0.003329 | 0.003908 | 0.004793 | 0.004641 | 0.007379 |
| 130 | 0.003471 | 0.004540 | 0.003941 | 0.005099 | 0.024059 |
| 140 | 0.003757 | 0.003871 | 0.003800 | 0.005493 | 0.057286 |
| 150 | 0.003760 | 0.003186 | 0.079443 | 0.072584 | 0.054176 |
| 160 | 0.003135 | 0.003575 | 0.068496 | 0.013035 | 0.011364 |
| 170 | 0.003265 | 0.003091 | 0.004296 | 0.004849 | 0.114604 |
| 180 | 0.003730 | 0.003458 | 0.063535 | 0.024556 | 0.259759 |
| 190 | 0.003401 | 0.003532 | 0.004213 | 0.013025 | 0.017685 |
| 200 | 0.003420 | 0.003078 | 0.004280 | 0.007403 | 0.011008 |
