arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2201.07954cs.CRcs.NI
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灵巧家庭中基于事件时间间隔的异常检测

Effective Anomaly Detection in Smart Home by Integrating Event Time Intervals

Chenxu Jiang, Chenglong Fu, Zhenyu Zhao, Xiaojiang Du, Yuede Ji

摘要:

灵巧家庭物联网系统和设备容易受到攻击和故障。因此,随着灵巧家庭部署的普及,用户对他们的安全和安全问题的担忧也随之出现。在灵巧家庭中,由于网络攻击、设备故障或人为错误,可能会发生各种异常情况(如火灾或洪水)。这些问题促使研究人员提出各种异常检测方法。现有的灵巧家庭异常检测的工作集中在检查物联网设备的事件序列,但遗漏了事件的时间信息。这一限制使他们无法检测到导致延迟的异常,而不是丢失/注入事件。为了填补这一空白,在本文中,我们提出了一种新的异常检测方法,考虑到事件间的时间间隔。我们提出了一个创新的度量来量化两个事件序列之间的时间相似性。我们设计了一个机制来学习常见的日常活动的事件序列的时间模式。通过将序列与学习的模式进行比较来检测延迟引起的异常。我们从真实世界的测试平台收集设备事件进行训练和测试。实验结果表明,我们提出的方法达到了93%,88%,89%的准确率为三个日常活动。

英文摘要:

Smart home IoT systems and devices are susceptible to attacks and malfunctions. As a result, users' concerns about their security and safety issues arise along with the prevalence of smart home deployments. In a smart home, various anomalies (such as fire or flooding) could happen, due to cyber attacks, device malfunctions, or human mistakes. These concerns motivate researchers to propose various anomaly detection approaches. Existing works on smart home anomaly detection focus on checking the sequence of IoT devices' events but leave out the temporal information of events. This limitation prevents them to detect anomalies that cause delay rather than missing/injecting events. To fill this gap, in this paper, we propose a novel anomaly detection method that takes the inter-event intervals into consideration. We propose an innovative metric to quantify the temporal similarity between two event sequences. We design a mechanism to learn the temporal patterns of event sequences of common daily activities. Delay-caused anomalies are detected by comparing the sequence with the learned patterns. We collect device events from a real-world testbed for training and testing. The experiment results show that our proposed method achieves accuracies of 93%, 88%, 89% for three daily activities.

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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