In the original Western Airlines set-covering model in Figure 14.52, we assumed that each city must be
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Figure 14.52 Set-Covering Model D EF 1 Western Airlines hub location model 2 3 Input data: which cities are covered by which potential hubs Potential hub Range names used: Hubs covered by Total hubs Used as hub? =ModelSB$25:$8$36 ModelSB$39 =Model$8$21SM$21 4 5 lity AT во CH DE но LA NO NY PI SL SF SE 6 JAT 7 JB0 1 1 1 1 1 8 CH 9 DE 1 1 1 1 1 10 HO 0. 1 1 11 LA 12 NO 13 NY 14 PI 15 SL 16 SF 17 SE 18 19 Decisions: which cities to use as hubs 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1. 1 20 AT BO CH DE HO LA NO NY PI SL SF SE 21 Used as hub? 1 1 1 22 23 Constraints that each city must be covered by at least one hub 24 City 25 AT Hubs covered by Required 26 B0 1 27 |CH 28 DE Note that there are multiple optimal solutions to this mode, all of which require a total of 3 hubs. You might get a different solution from the one shown here. 1 1 1 29 HO 1 30 LA 31 NO 32 NY 33 PI 1 1 1 34 ISL 1 35 SF 36 SE 1 1 37 38 Objective to minimize 39 Total hubs IS
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Data Analysis and Decision Making
ISBN: 978-0538476126
4th edition
Authors: Christian Albright, Wayne Winston, Christopher Zappe
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