The complexity of constraint satisfaction games and QCSP
The complexity of constraint satisfaction games and QCSP
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约束满足博弈和QCSP的复杂性
DOI:
10.1016/j.ic.2009.05.003
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发表时间:
2009
影响因子:
1
通讯作者:
Börner F
中科院分区:
文献类型:
--
作者:
Börner F
We study the complexity of two-person constraint satisfaction games. An instance of such a game is given by a collection of constraints on overlapping sets of variables, and the two players alternately make moves assigning values from a finite domain to the variables, in a specified order. The first player tries to satisfy all constraints, while the other tries to break at least one constraint; the goal is to decide whether the first player has a winning strategy. We show that such games can be conveniently represented by a logical form of quantified constraint satisfaction, where an instance is given by a first-order sentence in which quantifiers alternate and the quantifier-free part is a conjunction of (positive) atomic formulas; the goal is to decide whether the sentence is true. While the problem of deciding such a game is PSPACE-complete in general, by restricting the set of allowed constraint predicates, one can obtain infinite classes of constraint satisfaction games of lower complexity. We use the quantified constraint satisfaction framework to study how the complexity of deciding such a game depends on the parameter set of allowed predicates. With every predicate, one can associate certain predicate-preserving operations, called polymorphisms. We show that the complexity of our games is determined by the surjective polymorphisms of the constraint predicates. We illustrate how this result can be used by identifying the complexity of a wide variety of constraint satisfaction games.
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DOI:
--
发表时间:
2004
期刊:
影响因子:
--
作者:
Hubie Chen
通讯作者:
Hubie Chen
DOI:
--
发表时间:
1979
期刊:
影响因子:
--
作者:
R. Pöschel;L. A. Kalužnin
通讯作者:
L. A. Kalužnin
影响因子:
1.1
作者:
A. Fraenkel
通讯作者:
A. Fraenkel
DOI:
--
发表时间:
1978
期刊:
Journal of computer and system sciences (Print)
影响因子:
--
作者:
T. Schaefer
通讯作者:
T. Schaefer
DOI:
--
发表时间:
2004
期刊:
International Conference on Principles and Practice of Constraint Programming
影响因子:
--
作者:
Hubie Chen
通讯作者:
Hubie Chen