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Instances on random quadruples of facilities

and transportation matrix

type Gap-A  (R4-GapA)

This class of instances for the Multi Stage Uncapacitated Facility Location Problem is created as class Gap-A for the Simple Plant Location Problem. Each customer can be served by one of the 10 admissible facility paths. Each path consists of  4 facilities selected at random. The fixed cost of arbitrary facility is 3000. The dimension of the instances is 50 facilities, 100 admissible facility paths, 100 customers.

Table shows the input data and results for 30 benchmarks. The first column of the table is codes of input data and hyperlinks to text files. The second column is the optimal value of the objective function. The third column is the duality gap. The fourth column is the optimal set of open facilities.

All instances type R4-gapA.zip 119 Kb

Code

The optimal value

Duality Gap (%)

The optimal set of open facilities

471

69122

 57,0

3, 4, 7, 8, 10, 13, 17, 21, 22, 23, 24, 26, 27, 30, 31, 32, 36, 37, 38, 40, 46, 48, 49

472

69140

 55,9

1, 2, 3, 5, 7, 15, 16, 18, 19, 20, 22, 23, 26, 31, 32, 37, 38, 39, 41, 45, 46, 47, 49

473

72110

 58,2

1, 4, 7, 10, 11, 17, 18, 23, 24, 25, 27, 29, 30, 31, 32, 34, 35, 36, 38, 39, 40, 43, 46, 48

474

69119

 56,5

2, 3, 6, 9, 13, 14, 17, 19, 21, 22, 26, 27, 28, 32, 34, 40, 41, 44, 45, 46, 47, 48, 49

475

69121

 56,5

3, 6, 7, 8, 9, 14, 15, 17, 20, 22, 23, 25, 29, 30, 32, 33, 34, 35, 37, 39, 40, 42, 45

476

69141

 57,0

5, 11, 13, 17, 18, 19, 24, 26, 28, 30, 31, 32, 33, 37, 39, 40, 41, 43, 44, 45, 47, 49, 50

477

66109

 54,7

3, 4, 7, 9, 14, 15, 16, 20, 21, 22, 23, 24, 32, 34, 36, 37, 40, 43, 45, 46, 47, 49

478

72104

 59,0

1, 3, 5, 6, 9, 12, 14, 16, 17, 18, 19, 20, 23, 24, 27, 31, 32, 33, 37, 39, 42, 44, 45, 49

479

69123

 56,5

2, 3, 6, 8, 11, 13, 15, 16, 18, 23, 25, 29, 30, 34, 37, 39, 40, 41, 42, 43, 44, 46, 50

480

72132

 58,1

6, 7, 9, 13, 14, 17, 18, 19, 20, 21, 24, 28, 29, 33, 34, 36, 37, 38, 40, 41, 42, 44, 47, 49

481

69132

 55,4

1, 4, 7, 8, 10, 11, 13, 16, 20, 21, 23, 24, 25, 30, 31, 33, 34, 36, 43, 44, 45, 46, 49

482

69141

 55,6

3, 5, 6, 7, 13, 15, 16, 17, 20, 22, 23, 27, 30, 31, 36, 38, 39, 41, 42, 44, 45, 47, 50

483

72139

 57,5

4, 7, 8, 9, 11, 16, 18, 20, 23, 24, 27, 28, 31, 33, 34, 35, 36, 37, 42, 43, 44, 45, 47, 48

484

72131

 56,9

1, 2, 4, 7, 8, 10, 16, 18, 19, 21, 22, 24, 26, 27, 30, 32, 33, 35, 36, 39, 42, 44, 45, 49

485

75105

 60,1

1, 2, 9, 10, 13, 16, 17, 18, 19, 20, 22, 24, 25, 27, 28, 29, 32, 33, 39, 40, 41, 42, 43, 44, 48

486

72121

 57,0

1, 3, 8, 10, 11, 12, 18, 20, 21, 22, 23, 24, 26, 29, 30, 31, 32, 34, 36, 39, 41, 43, 49, 50

487

69138

 55,6

3, 4, 7, 8, 9, 11, 12, 15, 18, 20, 21, 24, 27, 30, 32, 33, 34, 36, 37, 39, 43, 47, 50

488

69137

 56,3

3, 4, 7, 8, 9, 11, 12, 15, 18, 20, 21, 24, 27, 30, 32, 33, 34, 36, 37, 39, 43, 47, 50

489

69107

 56,2

1, 2, 3, 4, 5, 6, 11, 12, 13, 15, 16, 17, 23, 24, 27, 30, 31, 32, 34, 35, 36, 42, 46

490

72112

 58,1

2, 7, 10, 11, 14, 16, 18, 19, 22, 24, 26, 31, 32, 33, 34, 40, 41, 42, 44, 45, 46, 47, 49, 50

491

72133

 58,2

3, 4, 5, 6, 7, 11, 17, 19, 20, 21, 23, 25, 26, 28, 31, 32, 33, 35, 36, 38, 39, 41, 44, 47

492

69112

 53,7

7, 9, 11, 12, 15, 16, 19, 21, 22, 23, 26, 29, 31, 34, 35, 37, 40, 41, 44, 47, 48, 49, 50

493

72137

 57,8

4, 5, 6, 7, 10, 12, 13, 16, 18, 19, 20, 21, 22, 23, 24, 27, 29, 31, 33, 35, 36, 37, 39, 46

494

72127

 58,1

1, 2, 3, 4, 8, 9, 12, 17, 20, 22, 23, 24, 30, 31, 34, 35, 36, 40, 42, 43, 45, 46, 47, 48

495

69142

 56,3

1, 2, 5, 7, 8, 13, 14, 16, 17, 19, 21, 23, 24, 25, 27, 29, 31, 32, 35, 38, 39, 49, 50

496

69122

 55,9

1, 3, 4, 5, 8, 14, 15, 18, 21, 22, 25, 26, 28, 29, 30, 32, 33, 34, 38, 42, 45, 46, 48

497

66138

 53,4

3, 7, 12, 13, 15, 16, 17, 19, 21, 22, 27, 32, 36, 38, 39, 40, 41, 42, 43, 46, 47, 50

498

72112

 56,6

1, 4, 6, 7, 8, 11, 14, 17, 23, 26, 28, 32, 33, 34, 35, 38, 39, 41, 43, 44, 46, 47, 48, 49

499

69135

 55,6

3, 5, 7, 8, 9, 10, 11, 13, 15, 17, 20, 21, 24, 25, 26, 28, 29, 30, 33, 34, 40, 42, 44

500

69136

 55,9

3, 5, 6, 8, 9, 13, 14, 19, 21, 22, 23, 26, 28, 32, 34, 37, 38, 40, 43, 45, 46, 48, 49