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» Variable symmetry breaking in numerical constraint problems
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CP
2005
Springer
13 years 11 months ago
Conditional Symmetry Breaking
Conditional symmetry arises in a sub-problem of a constraint satisfaction problem, where the sub-problem satisfies some condition under which additional symetries hold. Typically...
Ian P. Gent, Tom Kelsey, Steve Linton, Iain McDona...
ECAI
2008
Springer
13 years 7 months ago
Solving Necklace Constraint Problems
Abstract. Some constraint problems have a combinatorial structure where the constraints allow the sequence of variables to be rotated (necklaces), if not also the domain values to ...
Pierre Flener, Justin Pearson
CP
2005
Springer
13 years 11 months ago
Breaking All Value Symmetries in Surjection Problems
We propose a surprisingly simple new way of breaking all value symmetries with constraints. Our method requires the addition of one variable per value of the problem plus a linear ...
Jean-Francois Puget
ECAI
2010
Springer
13 years 7 months ago
Symmetries of Symmetry Breaking Constraints
Symmetry is an important feature of many constraint programs. We show that any symmetry acting on a set of symmetry breaking constraints can be used to break symmetry. Different s...
George Katsirelos, Toby Walsh
CSCLP
2006
Springer
13 years 9 months ago
An Attempt to Dynamically Break Symmetries in the Social Golfers Problem
A number of different satisfaction and optimisation combinatorial problems have recently been approached with constraint programming over the domain of finite sets, for increased d...
Francisco Azevedo