91 search results - page 1 / 19 » Symmetry Breaking Ordering Constraints |
CONSTRAINTS
2006
13 years 5 months ago
2006
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...
AMAI
2004
Springer
13 years 10 months ago
2004
Springer
Abstract. We introduce a new global constraint which combines together the lexicographic ordering constraint with two sum constraints. Lexicographic ordering constraints are freque...
CP
2006
Springer
13 years 9 months ago
2006
Springer
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...
ECAI
2006
Springer
13 years 9 months ago
2006
Springer
We present a comprehensive study of the use of value precedence constraints to break value symmetry. We first give a simple encoding of value precedence into ternary constraints th...
CSCLP
2008
Springer
13 years 7 months ago
2008
Springer
Abstract. We propose a new family of constraints which combine together lexicographical ordering constraints for symmetry breaking with other common global constraints. We give a g...