arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1404.3418stat.MLcs.ITmath.ITmath.STstat.TH
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无向图模型选择的主动学习

Active Learning for Undirected Graphical Model Selection

Divyanshu Vats, Robert D. Nowak, Richard G. Baraniuk

摘要:

本文研究了图形化的模型选择,估计一组随机变量之间的统计关系图的问题。传统的图形模型选择算法是被动的,即,它们要求在处理开始之前已经收集了所有的测量。我们提出了一种主动学习算法,使用连接树表示,以适应未来的测量从以前的测量收集的信息的基础上。我们证明,在一定条件下,我们的主动学习算法需要更少的标量测量比任何被动算法可靠地估计一个图。一系列的数值结果验证了我们的理论,并证明了主动学习的好处。

英文摘要:

This paper studies graphical model selection, i.e., the problem of estimating a graph of statistical relationships among a collection of random variables. Conventional graphical model selection algorithms are passive, i.e., they require all the measurements to have been collected before processing begins. We propose an active learning algorithm that uses junction tree representations to adapt future measurements based on the information gathered from prior measurements. We prove that, under certain conditions, our active learning algorithm requires fewer scalar measurements than any passive algorithm to reliably estimate a graph. A range of numerical results validate our theory and demonstrates the benefits of active learning.

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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