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arXiv 2301.09030cs.LG
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信息物理系统中的状态监测和异常检测

Condition monitoring and anomaly detection in cyber-physical systems

University of Texas at El Paso(德克萨斯大学埃尔帕索分校)

William Marfo, Deepak K. Tosh, Shirley V. Moore

摘要:

现代工业环境正在装备无数的智能制造机器,其中每个设备的状态都可以被持续监控。这种监测可以帮助识别未来可能发生的故障,并制定具有成本效益的维护计划。然而,要从大量收集的数据中进行早期检测,同时降低误报和漏报率,是一项艰巨的任务。这需要开发一个整体的机器学习框架来解决高优先级组件的状态监控问题,并开发有效的技术来检测异常,从而可以检测并可能定位故障组件。本文提出了一个比较分析的最新机器学习方法,强大的,具有成本效益的异常检测在网络物理系统。虽然检测已被广泛研究,但很少有研究人员分析异常的定位。我们表明,监督学习优于无监督算法。对于有监督的情况,我们实现了98%的近乎完美的准确率(特别是基于树的算法)。相比之下,在无监督的情况下,最佳情况下的准确率为63%:受试者工作特征曲线(AUC)下的面积作为一个额外的指标显示出类似的结果。

英文摘要:

The modern industrial environment is equipping myriads of smart manufacturing machines where the state of each device can be monitored continuously. Such monitoring can help identify possible future failures and develop a cost-effective maintenance plan. However, it is a daunting task to perform early detection with low false positives and negatives from the huge volume of collected data. This requires developing a holistic machine learning framework to address the issues in condition monitoring of high-priority components and develop efficient techniques to detect anomalies that can detect and possibly localize the faulty components. This paper presents a comparative analysis of recent machine learning approaches for robust, cost-effective anomaly detection in cyber-physical systems. While detection has been extensively studied, very few researchers have analyzed the localization of the anomalies. We show that supervised learning outperforms unsupervised algorithms. For supervised cases, we achieve near-perfect accuracy of 98 percent (specifically for tree-based algorithms). In contrast, the best-case accuracy in the unsupervised cases was 63 percent :the area under the receiver operating characteristic curve (AUC) exhibits similar outcomes as an additional metric.

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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