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A FRAMEWORK FOR COOPERATIVE DEDUCTIVE DATABASE SYSTEMS

机译:协作演绎数据库系统的框架

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摘要

In this paper, we address the problems of design, management, and integration of deductive database systems in a loosely coupled architecture, which constitute a cooperative deductive database system. We next address one important aspect of the problem of designing a cooperative deductive database system, namely, allocation of rules across the deductive database systems. We identify communication cost as the primary consideration in allocation of rules. The problem of optimal allocation of rules has been shown NP-complete, which has prohibitive execution times for large knowledge bases. We propose a naive algorithm for rule allocation and study its performance experimentally. We also show that this naive algorithm can be used for reallocation of rules after rulebase gets updated.
机译:在本文中,我们解决了在松耦合架构中演绎数据库系统的设计,管理和集成问题,这些体系构成了协作演绎数据库系统。接下来,我们解决设计协作演绎数据库系统问题的一个重要方面,即在演绎数据库系统之间分配规则。我们将通信成本确定为分配规则的主要考虑因素。规则的最佳分配问题已显示为NP完全,对于大型知识库而言,执行时间令人望而却步。我们提出了一种朴素的规则分配算法,并通过实验研究了其性能。我们还表明,在更新规则库后,可以将这种简单算法用于规则的重新分配。

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