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CPAIOR
2006
Springer
13 years 11 months ago
A Hybrid Column Generation and Constraint Programming Optimizer for the Tail Assignment Problem
Tail Assignment is the problem of assigning flight legs to aircraft while satisfying all operational constraints, and optimizing some objective function. In this article, we presen...
Sami Gabteni, Mattias Grönkvist
MP
2002
113views more  MP 2002»
13 years 7 months ago
A note on sensitivity of value functions of mathematical programs with complementarity constraints
Using standard nonlinear programming (NLP) theory, we establish formulas for first and second order directional derivatives for optimal value functions of parametric mathematical ...
Xinmin Hu, Daniel Ralph
BMCBI
2010
116views more  BMCBI 2010»
13 years 7 months ago
A hybrid approach to protein folding problem integrating constraint programming with local search
Background: The protein folding problem remains one of the most challenging open problems in computational biology. Simplified models in terms of lattice structure and energy func...
Abu Zafer M. Dayem Ullah, Kathleen Steinhöfel
LPNMR
2004
Springer
14 years 1 months ago
Set Constraints in Logic Programming
We investigate a generalization of weight-constraint programs with stable semantics, as implemented in the ASP solver smodels. Our programs admit atoms of the form X, F where X is ...
V. Wiktor Marek, Jeffrey B. Remmel
AMC
2006
107views more  AMC 2006»
13 years 7 months ago
Linear bilevel programming with upper level constraints depending on the lower level solution
Focus in the paper is on the definition of linear bilevel programming problems, the existence of optimal solutions and necessary as well as sufficient optimality conditions. In th...
Ayalew Getachew Mersha, Stephan Dempe