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arXiv 1302.4381cs.AI
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关系数据概率模型中的独立性推理

Reasoning about Independence in Probabilistic Models of Relational Data

University of Massachusetts Amherst(马萨诸塞大学阿默斯特分校)

Marc Maier, Katerina Marazopoulou, David Jensen

摘要:

我们扩展的d-分离理论的情况下,数据实例是不独立和同分布的。我们表明,直接应用规则的d-分离的概率模型的关系数据的结构不准确地推断出条件独立。我们介绍了关系d-分离,从关系模型推导条件独立事实的理论。我们提供了一个新的表示,抽象的地面图,使一个健全的,完整的,计算效率高的方法回答d-分离查询关系模型,我们提出的实证结果表明,有效性。

英文摘要:

We extend the theory of d-separation to cases in which data instances are not independent and identically distributed. We show that applying the rules of d-separation directly to the structure of probabilistic models of relational data inaccurately infers conditional independence. We introduce relational d-separation, a theory for deriving conditional independence facts from relational models. We provide a new representation, the abstract ground graph, that enables a sound, complete, and computationally efficient method for answering d-separation queries about relational models, and we present empirical results that demonstrate effectiveness.

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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