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CP
2005
Springer
15 years 10 months ago
Sub-optimality Approximations
Abstract. The sub-optimality approximation problem considers an optimization problem O, its optimal solution σ∗ , and a variable x with domain {d1, . . . , dm} and returns appro...
Russell Bent, Irit Katriel, Pascal Van Hentenryck
CP
2005
Springer
15 years 10 months ago
Symmetry and Consistency
We introduce a novel and exciting research area: symmetrising levels of consistency to produce stronger forms of consistency and more efficient mechanisms for establishing them. W...
Ian P. Gent, Tom Kelsey, Steve Linton, Colva M. Ro...
CP
2005
Springer
15 years 10 months ago
Weak Symmetries in Problem Formulations
Abstract. In this article we will present some problems that have weak symmetries. In contrast to a proper symmetry, a weak symmetry acts only on a subset of the variables and pres...
Roland Martin, Karsten Weihe
CP
2005
Springer
15 years 10 months ago
Automatic Detection of Variable and Value Symmetries
Abstract. Many symmetry breaking techniques assume that the symmetries of a CSP are given as input in addition to the CSP itself. We present a method that can be used to detect all...
Jean-Francois Puget
CP
2005
Springer
15 years 10 months ago
Tree Decomposition with Function Filtering
Besides search, complete inference methods can also be used to solve soft constraint problems. Their main drawback is the high spatial complexity. To improve its practical usage, w...
Martí Sánchez, Javier Larrosa, Pedro...