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arXiv cs/0611141cs.AI
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基于MDDs的通用全局约束

A Generic Global Constraint based on MDDs

Peter Tiedemann, Henrik Reif Andersen, Rasmus Pagh

摘要:

本文建议使用多值决策图(MDDs)作为通用全局约束的支持数据结构。我们给出了一个算法,用于维护广义弧一致性(GAC)在这个约束下,分摊成本的GAC计算的根到终端的路径中的搜索树。所使用的技术是有限长度输入的正则语言约束的GAC算法的扩展。我们的方法增加了对跳过变量的支持,动态地保持MDD的简化属性,并提供域蕴涵检测。最后,我们还展示了如何适应的方法,以约束类型密切相关的MDDs,如AOMDDs和案例DAG。

英文摘要:

The paper suggests the use of Multi-Valued Decision Diagrams (MDDs) as the supporting data structure for a generic global constraint. We give an algorithm for maintaining generalized arc consistency (GAC) on this constraint that amortizes the cost of the GAC computation over a root-to-terminal path in the search tree. The technique used is an extension of the GAC algorithm for the regular language constraint on finite length input. Our approach adds support for skipped variables, maintains the reduced property of the MDD dynamically and provides domain entailment detection. Finally we also show how to adapt the approach to constraint types that are closely related to MDDs, such as AOMDDs and Case DAGs.

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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