Monitoring Runtime Metrics of Fog Manufacturing via a Qualitative and Quantitative (QQ) Control Chart

IF 3.5 Q2 COMPUTER SCIENCE, INFORMATION SYSTEMS ACM Transactions on Internet of Things Pub Date : 2022-03-17 DOI:10.1145/3501262
Yifu Li, Lening Wang, Dongyoon Lee, R. Jin
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Abstract

Fog manufacturing combines Fog and Cloud computing in a manufacturing network to provide efficient data analytics and support real-time decision-making. Detecting anomalies, including imbalanced computational workloads and cyber-attacks, is critical to ensure reliable and responsive computation services. However, such anomalies often concur with dynamic offloading events where computation tasks are migrated from well-occupied Fog nodes to less-occupied ones to reduce the overall computation time latency and improve the throughput. Such concurrences jointly affect the system behaviors, which makes anomaly detection inaccurate. We propose a qualitative and quantitative (QQ) control chart to monitor system anomalies through identifying the changes of monitored runtime metric relationship (quantitative variables) under the presence of dynamic offloading (qualitative variable) using a risk-adjusted monitoring framework. Both the simulation and Fog manufacturing case studies show the advantage of the proposed method compared with the existing literature under the dynamic offloading influence.
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通过定性和定量(QQ)控制图监控雾制造的运行时间指标
雾制造在制造网络中结合了雾和云计算,提供高效的数据分析并支持实时决策。检测异常,包括不平衡的计算工作负载和网络攻击,对于确保可靠和响应的计算服务至关重要。然而,这种异常通常与动态卸载事件同时发生,其中计算任务从占用率较高的Fog节点迁移到占用率较低的Fog节点,以减少总体计算时间延迟并提高吞吐量。这种并发性共同影响系统行为,导致异常检测不准确。我们提出了一个定性和定量(QQ)控制图,通过识别在动态卸载(定性变量)存在下被监控的运行时度量关系(定量变量)的变化,使用风险调整监测框架来监测系统异常。仿真和制造雾的实例研究表明,在动态卸载影响下,与现有文献相比,所提出的方法具有优势。
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CiteScore
5.20
自引率
3.70%
发文量
0
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