Table 6.
Results of solving problem set 1 with 3 and 4 levels of reassignment
| Problem # | Level | CPLEX | LR1 | LR2 | CPU time (s) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LB | UB | Gap (%) | ITR | LB | UB | Gap (%) | ITR | CPLEX | LR 1 | LR2 | |||
| 1 | 3 | 415.5 | 415.5 | 415.5 | 0.000 | 16 | 415.5 | 415.5 | 0.000 | 15 | 0.7 | 570 | 6 |
| 4 | 415.5 | 415.5 | 415.5 | 0.000 | 19 | 415.5 | 415.5 | 0.000 | 15 | 1 | 592 | 7 | |
| 2 | 3 | 398.3 | 398.3 | 398.3 | 0.000 | 23 | 398.3 | 398.3 | 0.000 | 9 | 1 | 614 | 5 |
| 4 | 398.3 | 398.3 | 398.3 | 0.000 | 21 | 398.3 | 398.3 | 0.000 | 9 | 2 | 745 | 4 | |
| 3 | 3 | 729.2 | 731.5 | 731.5 | 0.315 | 13 | 701.8 | 710.8 | 1.291 | 6 | 5 | 959 | 30 |
| 4 | 729.2 | 729.2 | 729.22 | 0.000 | 24 | 701.8 | 710.8 | 1.291 | 5 | 6 | 1260 | 28 | |
| 4 | 3 | 506.4 | 506.4 | 506.4 | 0.000 | 3 | 506.4 | 506.4 | 0.000 | 15 | 0.7 | 25 | 6 |
| 4 | 506.4 | 506.4 | 506.4 | 0.000 | 3 | 506.4 | 506.4 | 0.000 | 15 | 1 | 62 | 6 | |
| 5 | 3 | 570.1 | 570.1 | 570.1 | 0.000 | 12 | 570.1 | 570.1 | 0.000 | 12 | 1 | 24 | 24 |
| 4 | 570.1 | 570.1 | 570.1 | 0.000 | 60 | 570.1 | 570.1 | 0.000 | 12 | 1 | 152 | 25 | |
| 6 | 3 | 479.0 | 479.0 | 479.0 | 0.000 | 6 | 479.0 | 479.0 | 0.000 | 6 | 0.9 | 72 | 3 |
| 4 | 479.0 | 479.0 | 479.0 | 0.000 | 4 | 479.0 | 479.0 | 0.000 | 6 | 1 | 1006 | 3 | |
| 7 | 3 | 618.9 | 618.9 | 618.9 | 0.000 | 10 | 537.2 | 538.1 | 0.172 | 9 | 0.9 | 358 | 30 |
| 4 | 618.9 | 592.6 | 701.3 | 18.343 | 14 | 537.2 | 538.1 | 0.172 | 9 | 1 | 1263 | 29 | |
| 8 | 3 | 450.5 | 450.5 | 450.5 | 0.000 | 14 | 450.5 | 450.5 | 0.000 | 15 | 0.9 | 99 | 7 |
| 4 | 450.5 | 450.5 | 450.5 | 0.000 | 9 | 450.5 | 450.5 | 0.000 | 15 | 1 | 1525 | 7 | |
| 9 | 3 | 591.7 | 591.7 | 591.7 | 0.000 | 67 | 591.7 | 591.7 | 0.000 | 13 | 0.9 | 1033 | 5 |
| 4 | 591.7 | 591.7 | 591.7 | 0.000 | 13 | 591.7 | 591.7 | 0.000 | 13 | 1 | 1026 | 5 | |
| 10 | 3 | 587.4 | 559.4 | 587.4 | 5.005 | 16 | 586.1 | 598.8 | 2.165 | 17 | 1 | 1367 | 16 |
| 4 | 587.4 | 563.4 | 587.5 | 4.278 | 24 | 586.1 | 598.8 | 2.165 | 17 | 2 | 361 | 27 | |