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» Generating Satisfiable Problem Instances
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ECOOP
2007
Springer
13 years 11 months ago
Efficiently Generating Structurally Complex Inputs with Thousands of Objects
Abstract. We present Shekoosh, a novel framework for constraint-based generation of structurally complex inputs of large sizes. Given a Java predicate that represents the desired s...
Bassem Elkarablieh, Yehia Zayour, Sarfraz Khurshid
EOR
2007
90views more  EOR 2007»
13 years 7 months ago
Accelerating column generation for variable sized bin-packing problems
In this paper, we study different strategies to stabilize and accelerate the column generation method, when it is applied specifically to the variable sized bin-packing problem,...
Cláudio Alves, José M. Valéri...
INFORMS
2000
54views more  INFORMS 2000»
13 years 7 months ago
Time-Indexed Formulations for Machine Scheduling Problems: Column Generation
Time-indexed formulations for machine scheduling problems have received a great deal of attention; not only do the linear programming relaxations provide strong lower bounds, but ...
Marjan van den Akker, Cor A. J. Hurkens, Martin W....
CORR
2010
Springer
109views Education» more  CORR 2010»
13 years 7 months ago
Hybrid tractability of soft constraint problems
The constraint satisfaction problem (CSP) is a central generic problem in artificial intelligence. Considerable effort has been made in identifying properties which ensure tractabi...
Martin C. Cooper, Stanislav Zivný
ECCC
2010
111views more  ECCC 2010»
13 years 7 months ago
Tight Bounds on the Approximability of Almost-satisfiable Horn SAT and Exact Hitting Set}
We study the approximability of two natural Boolean constraint satisfaction problems: Horn satisfiability and exact hitting set. Under the Unique Games conjecture, we prove the fo...
Venkatesan Guruswami, Yuan Zhou