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arXiv 1202.3701cs.LGcs.AIstat.ML
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基于AUC最大化的主动诊断:大规模噪声网络中多故障识别的有效方法

Active Diagnosis via AUC Maximization: An Efficient Approach for Multiple Fault Identification in Large Scale, Noisy Networks

University of Michigan(密歇根大学);University of Texas Medical Branch(德克萨斯大学医学部);Institute for Translational Sciences(转化科学研究所);Electrical Engineering and Computer Science(电气工程与计算机科学学院)

Gowtham Bellala, Jason Stanley, Clayton Scott, Suresh K. Bhavnani

摘要:

主动诊断的问题出现在诸如疾病诊断和计算机网络中的故障诊断的若干应用中,其中目标是快速识别一组对象的二进制状态(例如,故障或工作)通过顺序地选择和观察对二进制值查询的(噪声)响应。目前在这方面的算法依赖于循环的信念传播主动查询选择。这些算法具有指数级的时间复杂度,这使得它们在大型网络中变得缓慢甚至难以处理。我们提出了一个基于排名的贪心算法,顺序选择查询,使基于排名的输出的ROC曲线下的面积最大化。AUC准则允许我们做出一个简化的假设,显著降低了主动查询选择的复杂性(从指数到接近二次),而对性能质量几乎没有影响。

英文摘要:

The problem of active diagnosis arises in several applications such as disease diagnosis, and fault diagnosis in computer networks, where the goal is to rapidly identify the binary states of a set of objects (e.g., faulty or working) by sequentially selecting, and observing, (noisy) responses to binary valued queries. Current algorithms in this area rely on loopy belief propagation for active query selection. These algorithms have an exponential time complexity, making them slow and even intractable in large networks. We propose a rank-based greedy algorithm that sequentially chooses queries such that the area under the ROC curve of the rank-based output is maximized. The AUC criterion allows us to make a simplifying assumption that significantly reduces the complexity of active query selection (from exponential to near quadratic), with little or no compromise on the performance quality.

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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