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JAIR
2006

Set Intersection and Consistency in Constraint Networks

13 years 3 months ago
Set Intersection and Consistency in Constraint Networks
In this paper, we show that there is a close relation between consistency in a constraint network and set intersection. A proof schema is provided as a generic way to obtain consistency properties from properties on set intersection. This approach not only simplifies the understanding of and unifies many existing consistency results, but also directs the study of consistency to that of set intersection properties in many situations, as demonstrated by the results on the convexity and tightness of constraints in this paper. Specifically, we identify a new class of tree convex constraints where local consistency ensures global consistency. This generalizes row convex constraints. Various consistency results are also obtained on constraint networks where only some, in contrast to all in the existing work, constraints are tight.
Yuanlin Zhang, Roland H. C. Yap
Added 13 Dec 2010
Updated 13 Dec 2010
Type Journal
Year 2006
Where JAIR
Authors Yuanlin Zhang, Roland H. C. Yap
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