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» Breaking Symmetry of Interchangeable Variables and Values
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CP
2007
Springer
14 years 26 days 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
CONSTRAINTS
2006
105views more  CONSTRAINTS 2006»
13 years 6 months ago
Symmetry Breaking Constraints for Value Symmetries in Constraint Satisfaction
Constraint satisfaction problems (CSPs) sometimes contain both variable symmetries and value symmetries, causing adverse effects on CSP solvers based on tree search. As a remedy, s...
Y. Law, J. Lee
CP
2006
Springer
13 years 10 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
CP
2006
Springer
13 years 10 months ago
Static and Dynamic Structural Symmetry Breaking
We reconsider the idea of structural symmetry breaking (SSB) for constraint satisfaction problems (CSPs). We show that the dynamic dominance checks used in symmetry breaking by dom...
Pierre Flener, Justin Pearson, Meinolf Sellmann, P...
CP
2005
Springer
14 years 6 days 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...