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DAM
2006
172views more  DAM 2006»
13 years 10 months ago
A Branch-and-Cut algorithm for graph coloring
In a previous work, we proposed a new integer programming formulation for the graph coloring problem which, to a certain extent, avoids symmetry. We studied the facet structure of...
Isabel Méndez-Díaz, Paula Zabala
JAL
2008
139views more  JAL 2008»
13 years 10 months ago
A test suite for the evaluation of mixed multi-unit combinatorial auctions
Mixed Multi-Unit Combinatorial Auctions extend and generalize all the preceding types of combinatorial auctions. In this paper, we try to make headway on the practical application...
Meritxell Vinyals, Andrea Giovannucci, Jesú...
INFORMS
2006
87views more  INFORMS 2006»
13 years 10 months ago
Early Estimates of the Size of Branch-and-Bound Trees
This paper intends to show that the time needed to solve mixed integer programming problems by branch and bound can be roughly predicted early in the solution process. We construc...
Gérard Cornuéjols, Miroslav Karamano...
MP
2006
121views more  MP 2006»
13 years 10 months ago
Approximate fixed-rank closures of covering problems
Consider a 0/1 integer program min{cT x : Ax b, x {0, 1}n } where A is nonnegative. We show that if the number of minimal covers of Ax b is polynomially bounded, then there is ...
Daniel Bienstock, Mark Zuckerberg
ACL
2010
13 years 8 months ago
Global Learning of Focused Entailment Graphs
We propose a global algorithm for learning entailment relations between predicates. We define a graph structure over predicates that represents entailment relations as directed ed...
Jonathan Berant, Ido Dagan, Jacob Goldberger