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IJCAI
2003
13 years 8 months ago
Consistency and Set Intersection
We propose a new framework to study properties of consistency in a Constraint Network from the perspective of properties of set intersection. Our framework comes with a proof sche...
Yuanlin Zhang, Roland H. C. Yap
CORR
2010
Springer
133views Education» more  CORR 2010»
13 years 6 months ago
Reformulation of Global Constraints in Answer Set Programming
We show that global constraints on finite domains like alldifferent can be reformulated into answer set programs on which we achieve arc, bound or range consistency. These reform...
Christian Drescher, Toby Walsh
AI
2008
Springer
13 years 7 months ago
Properties of tree convex constraints
It is known that a tree convex network is globally consistent if it is path consistent. However, if a tree convex network is not path consistent, enforcing path consistency on it ...
Yuanlin Zhang, Eugene C. Freuder
CP
2005
Springer
14 years 29 days ago
From Linear Relaxations to Global Constraint Propagation
We present a method for propagating linear constraints. Our technique exploits the fact that the interior point method converges on a central point of the polytope. A variable assi...
Claude-Guy Quimper, Alejandro López-Ortiz
AAAI
2004
13 years 8 months ago
The Complexity of Global Constraints
We study the computational complexity of reasoning with global constraints. We show that reasoning with such constraints is intractable in general. We then demonstrate how the sam...
Christian Bessière, Emmanuel Hebrard, Brahi...