References of "4OR : Quarterly Journal of the Belgian, French and Italian Operations Research Societies"
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See detailModeling in Air Transportation: Cargo Loading and Itinerary Choice
Lurkin, Virginie ULg

in 4OR : Quarterly Journal of the Belgian, French and Italian Operations Research Societies (2016)

This is a summary of the author's PhD thesis supervised by Michael Schyns and defended on April 29, 2016 at the University of Li\`ege, Belgium. We examine two problems as part of this dissertation. The ... [more ▼]

This is a summary of the author's PhD thesis supervised by Michael Schyns and defended on April 29, 2016 at the University of Li\`ege, Belgium. We examine two problems as part of this dissertation. The first is a cargo loading problem. The second problem we examine involves the estimation of itinerary choice models that include price variables and correct for price endogeneity using a control function that uses several types of instrumental variables. [less ▲]

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See detailMulti-period stochastic optimization problems in transportation management (Ph. D. Thesis Summary)
Pironet, Thierry ULg

in 4OR : Quarterly Journal of the Belgian, French and Italian Operations Research Societies (2015), 13(1), 113-114

Ph. D Thesis summary see other reference on ORBI

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See detailPeter Ladislaw Hammer (1936-2006)
Boros, Endre; Crama, Yves ULg; Simeone, Bruno

in 4OR : Quarterly Journal of the Belgian, French and Italian Operations Research Societies (2007), 5(1), 1-4

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See detailLifting, Superadditivity, Mixed Integer Rounding and Single Node Flow Sets Revisited
Louveaux, Quentin ULg; Wolsey, Laurence A.

in 4OR : Quarterly Journal of the Belgian, French and Italian Operations Research Societies (2003), 1

In this survey we attempt to give a unified presentation of a variety of results on the lifting of valid inequalities, as well as a standard procedure combining mixed integer rounding with lifting for the ... [more ▼]

In this survey we attempt to give a unified presentation of a variety of results on the lifting of valid inequalities, as well as a standard procedure combining mixed integer rounding with lifting for the development of strong valid inequalities for knapsack and single node flow sets. Our hope is that the latter can be used in practice to generate cutting planes for mixed integer programs. The survey contains essentially two parts. In the first we present lifting in a very general way, empha- sizing superadditive lifting which allows one to lift simultaneously different sets of variables. In the second, our procedure for generating strong valid inequalities consists of reduction to a knapsack set with a single continuous variable, construc- tion of a mixed integer rounding inequality, and superadditive lifting. It is applied to several generalizations of the 0-1 single node flow set. [less ▲]

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