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Lagrangean relaxation for the capacitated hub location problem with single assignment
Contreras, Ivan; Díaz, Juan A.; Fernández, Elena - In: OR spectrum : quantitative approaches in management 31 (2009) 3, pp. 483-506
Persistent link: https://www.econbiz.de/10008247885
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Branch and Price for Large-Scale Capacitated Hub Location Problems with Single Assignment
Contreras, Ivan; Díaz, Juan A.; Fernández, Elena - In: INFORMS journal on computing : JOC 23 (2011) 1, pp. 41-56
Persistent link: https://www.econbiz.de/10008849741
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Branch and price for large-scale capacitated hub location problems with single assignment
Contreras, Ivan; Díaz, Juan A.; Fernández Muñoz, Elena - In: INFORMS journal on computing : JOC 23 (2011) 1, pp. 41-55
Persistent link: https://www.econbiz.de/10008935646
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Lagrangean duals and exact solution to the capacitated p-center problem
Albareda-Sambola, Maria; Díaz, Juan A.; Fernández, Elena - In: European journal of operational research : EJOR 201 (2010) 1, pp. 71-81
Persistent link: https://www.econbiz.de/10003974667
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Optimality conditions via scalarization for a new -efficiency concept in vector optimization problems
Albareda-Sambola, Maria; Díaz, Juan A.; Fernández, Elena - In: European journal of operational research : EJOR 201 (2010) 1, pp. 11-23
Persistent link: https://www.econbiz.de/10008349391
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Lagrangean duals and exact solution to the capacitated p-center problem
Albareda-Sambola, Maria; Díaz, Juan A.; Fernández, Elena - In: European Journal of Operational Research 201 (2010) 1, pp. 71-81
In this work, we address the capacitated p-center problem (CpCP). We study two auxiliary problems, discuss their relation to CpCP, and analyze the lower bounds obtained with two different Lagrangean duals based on each of these auxiliary problems. We also compare two different strategies for...
Persistent link: https://www.econbiz.de/10008483209
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Tight bounds from a path based formulation for the tree of hub location problem
Contreras, Ivan; Fernández, Elena; Marín, Alfredo - In: Computers & operations research : and their … 36 (2009) 12, pp. 3117-3127
Persistent link: https://www.econbiz.de/10003910817
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Lagrangean bounds for the optimum communication spanning tree problem
Contreras, Ivan; Fernández, Elena; Marín, Alfredo - In: Top : transactions in operations research 18 (2010) 1, pp. 140-157
Persistent link: https://www.econbiz.de/10003991713
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Minimizing the maximum travel time in a combined model of facility location and network design
Contreras, Ivan; Fernández, Elena; Reinelt, Gerhard - In: Omega : the international journal of management science 40 (2012) 6, pp. 847-860
Persistent link: https://www.econbiz.de/10009532240
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Hub location as the minimization of a supermodular set function
Contreras, Ivan; Fernández, Elena - In: Operations research 62 (2014) 3, pp. 557-570
Persistent link: https://www.econbiz.de/10010381851