Uncapacitated CLSC Data Instances (Balanced and Unbalanced)
Üster. H., Easwaran. G., Akçali. E., and Çetinkaya. S., Benders Decomposition with Alternative Multiple Cuts for a Multi-Product Closed-Loop Supply Chain Network Design Model, Naval Research Logistics, Vol.54, 890-907, 2007..
Note: The link to the CLSC Network Design Problem data instances is given below.
Please right click on the link and click "Save Target As" to save it on your machine.
· CLSC Data Instances - Model-1.zip
Format:
1. The data instances for the balanced cost structure are named Uncap_Benders_1.txt to Uncap_Benders_120.txt.
2. There are 12 different classes. There are 10 instances under each class.
3. The Table below gives the number of products, retailers, and collection centers in each class.
Class
Products
Retailers
Collection Centers
C1
5
60
25
C2
5
60
35
C3
5
90
25
C4
5
90
35
C5
5
120
25
C6
5
120
35
C7
10
60
25
C8
10
60
35
C9
10
90
25
C10
10
90
35
C11
10
120
25
C12
10
120
35
4. The Legend for the input file format is given below:
Symbol
Details
P
Products
R
Retailers
K
Collection Centers
D
Distribution Centers
S(p)
Remanufacturing Product Plants
T(p)
New Product Plants
D'rp
Fresh demand for product p at retailer r
Drp
Return demand for product p at retailer r
Fk
Fixed cost of opening collection center k
Fs(p) - spFC[p][s]
Fixed cost of opening remanufacturing plant s for product p
rkLTC
Transportation cost (per unit per mi) from retailer r to collection center k
drLTC
Transportation cost (per unit per mi) from distribution center d to retailer r
ks(p)LTC - [k][p][s]
Transportation cost (per unit per mi) from collection center k to remanufacturing plant s, associated with product p
s(p)dLTC - [p][s][d]
Transportation cost (per unit per mi) from remanufacturing plant s, associated with product p, to distribution center d
T(p)dLTC - [p][t][d]
Transportation cost (per unit per mi) from new product plant t, associated with product p, to the distribution center d.
pkPC - [p][k]
Collection processing cost for product p at location k
PRemanPC[p][s]
Remanufacturing cost for product p at location s
POemPC[p][t]
Manufacturing cost for product p at location t
Delta[r][p]
Retailer return fraction for product p at location r
Alpha[p][s(p)]
Remanufacturing coefficient for plant s for product p
Distribution_Capacities
(not applicable)
pdPC - [p][d]
Distribution processing cost for product p at location d
5. All the text files follow the following sample format. (Products=2, Retailers=3, Collection Centers=5, Distribution Centers=3).
P
2
R
3
K
5
D
3
S(p)
[3, 3]
T(p)
[3, 3]
D'rp
[[476, 480], [478, 458], [480, 483]]
Drp
[[299, 250], [272, 250], [255, 268]]
Fk
[1.44773e+007, 1.54936e+007, 1.51822e+007, 1.46114e+007, 1.58926e+007]
Fs(p) - spFC[p][s]
[[1.02101e+006, 1.20925e+006, 1.15693e+006], [1.51668e+006, 1.56021e+006, 1.43467e+006]]
rkLTC
[[2123.07, 1142.51, 494.696, 803.881, 1378.08], [2658.99, 1631.32, 797.991, 241.459, 1919.89], [397.523, 1431.08, 1875.72, 2767.94, 636.037]]
drLTC
[[6.64447, 7.7896, 2.9211], [3.63423, 4.78621, 3.14738], [6.08905, 7.34389, 1.70055]]
ks(p)LTC - [k][p][s]
[[[4.39954, 10.7587, 3.5525], [50.0591, 86.2556, 5.13426]], [[3.79271, 17.5223, 11.1379], [70.2111, 49.8024, 72.6498]], [[7.6992, 14.6272, 10.9736], [39.6622, 15.7879, 83.5602]], [[10.7966, 18.7486, 15.3099], [84.2019, 40.304, 124.634]], [[3.41344, 12.4654, 6.46025], [29.0086, 54.0381, 30.2922]]]
s(p)dLTC - [p][s][d]
[[[49.4849, 18.9911, 34.8942], [46.7057, 109.315, 63.9213], [1.69839, 66.932, 15.5171]], [[28.3145, 31.4717, 27.5628], [45.8544, 26.4101, 42.0959], [16.7381, 27.5628, 9.221]]]
T(p)dLTC - [p][t][d]
[[[84.1861, 42.151, 71.6798], [65.6582, 104.219, 75.617], [84.5335, 18.1805, 64.0371]], [[37.8111, 33.9774, 30.0685], [55.6267, 35.0298, 49.8385], [34.6539, 35.7063, 26.8361]]]
pkPC - [p][k]
[[629.786, 643.444, 669.231, 649.721, 682.004], [1001.34, 959.652, 941.519, 991.663, 974.678]]
PRemanPC[p][s]
[[673.267, 671.105, 773.797], [1081.28, 1004.03, 1088.2]]
POemPC[p][t]
[[131.865, 127.704, 135.468], [202.914, 197.062, 192.55]]
Delta[r][p]
[[0.760799, 0.77289], [0.702997, 0.729463], [0.718281, 0.73318]]
Alpha[p][s(p)]
[[0.948111, 0.934389, 0.831339], [0.95461, 0.92789, 0.892436]]
Distribution_Capacities
[9787.92, 9246.38, 9037.32]
pdPC - [p][d]
[[36.1182, 34.0571, 30.2031], [52.3546, 51.7581, 49.1857]]
- The data instances for the unbalanced cost structure are named as follows:
Facility location cost dominant data: Unbalanced_f_1.txt to Unbalanced_f_20.txt
Transportation cost dominant data: Unbalanced_t_1.txt to Unbalanced_t_20.txt and
Processing cost dominant data: Unbalanced_p_1.txt to Unbalanced_p_20.txt.
The instances 1 to 10 are based on class C11 and instances 11 to 20 are based on class C12.
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