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arXiv 1407.2483stat.MLcs.AIcs.LG
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计算马尔可夫毯结构

Counting Markov Blanket Structures

University of Pittsburgh School of Medicine(匹兹堡大学医学院)

Shyam Visweswaran, Gregory F. Cooper

摘要:

学习马尔可夫毯(MB)结构已被证明在执行特征选择,学习贝叶斯网络(BN)和发现因果关系方面非常有用。我们提出了一个公式,有效地确定MB结构的数量给定的目标变量和一组其他变量。正如预期的那样,MB结构的数量呈指数级增长。然而,我们定量地表明,有少得多的MB结构,包含目标变量比有BN结构,包含它。特别是,BN结构MB结构的比例出现指数增加的变量的数量。

英文摘要:

Learning Markov blanket (MB) structures has proven useful in performing feature selection, learning Bayesian networks (BNs), and discovering causal relationships. We present a formula for efficiently determining the number of MB structures given a target variable and a set of other variables. As expected, the number of MB structures grows exponentially. However, we show quantitatively that there are many fewer MB structures that contain the target variable than there are BN structures that contain it. In particular, the ratio of BN structures to MB structures appears to increase exponentially in the number of variables.

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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