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» Breaking Value Symmetry
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CP
2006
Springer
13 years 11 months ago
General Symmetry Breaking Constraints
We describe some new propagators for breaking symmetries in constraint satisfaction problems. We also introduce symmetry breaking constraints to deal with symmetries acting simulta...
Toby Walsh
IJCAI
2003
13 years 9 months ago
Tractable Symmetry Breaking for CSPs with Interchangeable Values
Symmetry breaking in CSPs has attracted consid­ erable attention in recent years. Various general schemes have been proposed to eliminate sym­ metries during search. In general,...
Pascal Van Hentenryck, Pierre Flener, Justin Pears...
CP
2007
Springer
14 years 1 months ago
Breaking Value Symmetry
Symmetry is an important factor in solving many constraint satisfaction problems. One common type of symmetry is when we have symmetric values. We can eliminate such value symmetr...
Toby Walsh
CP
2005
Springer
14 years 1 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...
CP
2005
Springer
14 years 1 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