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ECAI
2006
Springer
13 years 11 months ago
Symmetry Breaking Using Value Precedence
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...
Toby Walsh
CP
2004
Springer
14 years 1 months ago
Global Constraints for Integer and Set Value Precedence
The paper introduces value precedence on integer and set sequences. A useful application of the notion is in breaking symmetries of indistinguishable values, an important class of ...
Yat Chiu Law, Jimmy Ho-Man Lee