Constraint satisfaction tractability from semi-lattice operations on infinite sets
Constraint satisfaction tractability from semi-lattice operations on infinite sets
复制标题
无限集上半格操作的约束满足可处理性
DOI:
10.1145/2528933
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发表时间:
2013
影响因子:
0.5
通讯作者:
Bodirsky M
中科院分区:
文献类型:
--
作者:
Bodirsky M
A famous result by Jeavons, Cohen, and Gyssens shows that every Constraint Satisfaction Problem (CSP) where the constraints are preserved by a semi-lattice operation can be solved in polynomial time. This is one of the basic facts for the so-called universal algebraic approach to a systematic theory of tractability and hardness in finite domain constraint satisfaction. Not surprisingly, the theorem of Jeavons et al. fails for arbitrary infinite domain CSPs. Many CSPs of practical interest, though, and in particular those CSPs that are motivated by qualitative reasoning calculi from artificial intelligence, can be formulated with constraint languages that are rather well-behaved from a model-theoretic point of view. In particular, the automorphism group of these constraint languages tends to belargein the sense that the number of orbits ofn-subsets of the automorphism group is bounded by some function inn.In this article we present a generalization of the theorem by Jeavons et al. to infinite domain CSPs where the number of orbits ofn-subsets grows subexponentially inn, and prove that preservation under a semi-lattice operation for such CSPs implies polynomial-time tractability. Unlike the result of Jeavons et al., this includes CSPs that cannot be solved by Datalog.
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DOI:
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发表时间:
1999
期刊:
International Conference on Principles and Practice of Constraint Programming
影响因子:
--
作者:
V. Dalmau;J. Pearson
通讯作者:
J. Pearson
DOI:
--
发表时间:
2005
期刊:
影响因子:
--
作者:
B. Larose;L. Zádori
通讯作者:
L. Zádori
影响因子:
1
作者:
M. Bodirsky;M. Pinsker
通讯作者:
M. Pinsker
DOI:
--
发表时间:
1985
期刊:
影响因子:
--
作者:
H. D. Macpherson
通讯作者:
H. D. Macpherson
DOI:
--
发表时间:
2008
期刊:
TOCL
影响因子:
--
作者:
M. Bodirsky;Jan Kára
通讯作者:
Jan Kára