Results 41 to 50 of about 47,013 (110)

Adaptive large neighborhood search for mixed integer programming

open access: yesMathematical Programming Computation, 2018
Large Neighborhood Search (LNS) heuristics are among the most powerful but also most expensive heuristics for mixed integer programs (MIP). Ideally, a solver adaptively concentrates its limited computational budget by learning which LNS heuristics work ...
Gregor Hendel
semanticscholar   +1 more source

Optimization as an analysis tool for human complex decision making [PDF]

open access: yes, 2011
We present a problem class of mixed-integer nonlinear programs (MINLPs) with nonconvex continuous relaxations which stem from economic test scenarios that are used in the analysis of human complex problem solving.
Barth, Dr Carola M.   +4 more
core  

Optimizing electricity distribution using two-stage integer recourse models [PDF]

open access: yes
We consider two planning problems faced by an electricity distributor. Electricity can be ob-tained both from power plants and small generators such as hospitals and greenhouses, whereas the future demand for electricity is uncertain.
Klein Haneveld, W.K.   +1 more
core   +1 more source

Branch-and-price and heuristic column generation for the generalized truck-and-trailer routing problem [PDF]

open access: yes, 2011
The generalized truck-and-trailer routing problem (GTTRP) constitutes a uni¯ed model for vehicle routing problems with trailers and a fixed lorry-trailer assignment.
Drexl, Michael
core  

On multiple simple recourse models [PDF]

open access: yes
We consider multiple simple recourse (MSR) models, both continuous and integer versions, which generalize the corresponding simple recourse (SR) models by allowing for a refined penalty cost structure for individual shortages and surpluses.
Vlerk, Maarten H. van der
core   +1 more source

Undecidability and hardness in mixed-integer nonlinear programming

open access: yesRAIRO Oper. Res., 2019
We survey two aspects of mixed-integer nonlinear programming which have attracted less attention (so far) than solution methods, solvers and applications: namely, whether the class of these problems can be solved algorithmically, and, for the subclasses ...
Leo Liberti
semanticscholar   +1 more source

Integrated chance constraints in an ALM model for pension funds [PDF]

open access: yes
We discuss integrated chance constraints in their role of short-term risk constraints in a strategic ALM model for Dutch pension funds. The problem is set up as a multistage recourse model, with special attention for modeling the guidelines proposed by ...
Vlerk, Maarten H. van der
core   +1 more source

Relaxations of mixed integer sets from lattice-free polyhedra [PDF]

open access: yes, 2018
This paper gives an introduction to a recently established link between the geometry of numbers and mixed integer optimization. The main focus is to provide a review of families of lattice-free polyhedra and their use in a disjunctive programming ...
Del Pia, Alberto, Weismantel, Robert
core  

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