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» Two-Step MIR Inequalities for Mixed Integer Programs
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IPCO
2010
174views Optimization» more  IPCO 2010»
13 years 7 months ago
On Lifting Integer Variables in Minimal Inequalities
This paper contributes to the theory of cutting planes for mixed integer linear programs (MILPs). Minimal valid inequalities are well understood for a relaxation of an MILP in tab...
Amitabh Basu, Manoel B. Campêlo, Michele Con...
IPCO
2004
93views Optimization» more  IPCO 2004»
13 years 7 months ago
Semi-continuous Cuts for Mixed-Integer Programming
We study the convex hull of the feasible set of the semi-continuous knapsack problem, in which the variables belong to the union of two intervals. Besides being important in its o...
I. R. de Farias
IPCO
2008
136views Optimization» more  IPCO 2008»
13 years 7 months ago
Computing with Multi-row Gomory Cuts
Recent advances on the understanding of valid inequalities from the infinite group relaxation has opened the possibility of finding a computationally effective extension to GMI cu...
Daniel G. Espinoza
IOR
2010
86views more  IOR 2010»
13 years 4 months ago
Disjunctive Decomposition for Two-Stage Stochastic Mixed-Binary Programs with Random Recourse
This paper introduces disjunctive decomposition for two-stage mixed 0-1 stochastic integer programs (SIPs) with random recourse. Disjunctive decomposition allows for cutting plane...
Lewis Ntaimo
SIAMJO
2010
135views more  SIAMJO 2010»
13 years 4 months ago
On the Complexity of Selecting Disjunctions in Integer Programming
The imposition of general disjunctions of the form “πx ≤ π0 ∨ πx ≥ π0 + 1”, where π, π0 are integer valued, is a fundamental operation in both the branch-and-bound...
Ashutosh Mahajan, Ted K. Ralphs