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arXiv 1104.4910cs.AI
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二元量化约束满足问题的混合易处理类

Hybrid Tractable Classes of Binary Quantified Constraint Satisfaction Problems

Jian Gao, Minghao Yin, Junping Zhou

摘要:

本文研究了二元量化约束满足问题的混合易处理性。首先,一个基本的易处理类的二进制QCSP的确定使用的破三角性质。在这个类中,破三角形属性的变量顺序必须与QCSP前缀中的变量顺序相同。其次,我们打破这一限制,允许存在量化的变量可以在其块内或块外移动,从而通过引入破角属性来识别一些新的易处理类。最后,我们确定了一个更一般化的易处理类,即,QCSP的最小最大可扩展类。

英文摘要:

In this paper, we investigate the hybrid tractability of binary Quantified Constraint Satisfaction Problems (QCSPs). First, a basic tractable class of binary QCSPs is identified by using the broken-triangle property. In this class, the variable ordering for the broken-triangle property must be same as that in the prefix of the QCSP. Second, we break this restriction to allow that existentially quantified variables can be shifted within or out of their blocks, and thus identify some novel tractable classes by introducing the broken-angle property. Finally, we identify a more generalized tractable class, i.e., the min-of-max extendable class for QCSPs.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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