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» On solving a hard quadratic 3-dimensional assignment problem
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SAT
2005
Springer
133views Hardware» more  SAT 2005»
15 years 4 months ago
Solving Over-Constrained Problems with SAT Technology
Abstract. We present a new generic problem solving approach for overconstrained problems based on Max-SAT. We first define a clausal form formalism that deals with blocks of clau...
Josep Argelich, Felip Manyà
ISAAC
2001
Springer
112views Algorithms» more  ISAAC 2001»
15 years 3 months ago
On the Complexity of Train Assignment Problems
We consider a problem faced by train companies: How can trains be assigned to satisfy scheduled routes in a cost efficient way? Currently, many railway companies create solutions b...
Thomas Erlebach, Martin Gantenbein, Daniel Hü...
COCOS
2003
Springer
117views Optimization» more  COCOS 2003»
15 years 4 months ago
A Method for Global Optimization of Large Systems of Quadratic Constraints
In previous work, we have presented a novel global feasibility solver for the large system of quadratic constraints that arise as subproblems in the solving of hard hybrid problems...
Nitin Lamba, Mark Dietz, Daniel P. Johnson, Mark S...
ISAAC
1992
Springer
132views Algorithms» more  ISAAC 1992»
15 years 3 months ago
Generalized Assignment Problems
In the multilevel generalized assignment problem (MGAP) agents can perform tasks at more than one efficiency level. Important manufacturing problems, such as lot sizing, can be ea...
Silvano Martello, Paolo Toth
STOC
2002
ACM
126views Algorithms» more  STOC 2002»
15 years 11 months ago
Polynomial-time quantum algorithms for Pell's equation and the principal ideal problem
We give polynomial-time quantum algorithms for three problems from computational algebraic number theory. The first is Pell's equation. Given a positive nonsquare integer d, ...
Sean Hallgren