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arXiv 2203.09354cs.LGcs.AI
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基于知识图谱嵌入模型的上下文相关异常检测

Context-Dependent Anomaly Detection with Knowledge Graph Embedding Models

MIT Lincoln Laboratory(麻省理工学院林肯实验室)

Nathan Vaska, Kevin Leahy, Victoria Helus

摘要:

增加机器学习模型的语义理解和上下文感知对于提高鲁棒性和降低对数据偏移的敏感性非常重要。在这项工作中,我们利用上下文感知的异常检测问题。虽然基于图形的异常检测已经得到了广泛的研究,上下文相关的异常检测是一个开放的问题,并没有太多的当前研究。我们开发了一个通用的框架转换上下文相关的异常检测问题的链接预测问题,允许从这个领域的成熟技术被应用。我们实现了一个系统的基础上,我们的框架,利用知识图谱嵌入模型,并展示了使用上下文提供的语义知识库检测离群值的能力。我们表明,我们的方法可以检测上下文相关的异常具有很高的准确度,并表明当前的对象检测器可以检测到足够的类,以提供所需的上下文,在我们的示例域中的良好性能。

英文摘要:

Increasing the semantic understanding and contextual awareness of machine learning models is important for improving robustness and reducing susceptibility to data shifts. In this work, we leverage contextual awareness for the anomaly detection problem. Although graphed-based anomaly detection has been widely studied, context-dependent anomaly detection is an open problem and without much current research. We develop a general framework for converting a context-dependent anomaly detection problem to a link prediction problem, allowing well-established techniques from this domain to be applied. We implement a system based on our framework that utilizes knowledge graph embedding models and demonstrates the ability to detect outliers using context provided by a semantic knowledge base. We show that our method can detect context-dependent anomalies with a high degree of accuracy and show that current object detectors can detect enough classes to provide the needed context for good performance within our example domain.

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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