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CORR
2010
Springer
130views Education» more  CORR 2010»
13 years 11 months ago
Decomposition of the NVALUE constraint
We study decompositions of the global NVALUE constraint. Our main contribution is theoretical: we show that there are propagators for global constraints like NVALUE which decomposi...
Christian Bessiere, George Katsirelos, Nina Narody...
CPAIOR
2010
Springer
14 years 4 months ago
The Increasing Nvalue Constraint
This paper introduces the Increasing Nvalue constraint, which restricts the number of distinct values assigned to a sequence of variables so that each variable in the sequence is l...
Nicolas Beldiceanu, Fabien Hermenier, Xavier Lorca...
CPAIOR
2005
Springer
14 years 4 months ago
Filtering Algorithms for the NValue Constraint
Abstract. The NValue constraint counts the number of different values assigned to a vector of variables. Propagating generalized arc consistency on this constraint is NP-hard. We ...
Christian Bessière, Emmanuel Hebrard, Brahi...
CP
2009
Springer
14 years 12 months ago
A Constraint on the Number of Distinct Vectors with Application to Localization
Abstract. This paper introduces a generalization of the nvalue constraint that bounds the number of distinct values taken by a set of variables.The generalized constraint (called n...
Gilles Chabert, Luc Jaulin, Xavier Lorca
CSCLP
2004
Springer
14 years 4 months ago
New Structural Decomposition Techniques for Constraint Satisfaction Problems
We propose four new structural decomposition techniques for Constraint Satisfaction Problems. We compare these four techniques both theoretically and experimentally with hinge deco...
Yaling Zheng, Berthe Y. Choueiry