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首页> 外文期刊>Physica, A. Statistical mechanics and its applications >Detecting link failures in complex network processes using remote monitoring
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Detecting link failures in complex network processes using remote monitoring

机译：使用远程监视检测复杂网络过程中的链路故障

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摘要

We study whether local structural changes in a complex network can be distinguished from passive remote time-course measurements of the network's dynamics. Specifically the detection of link failures in a network synchronization process from noisy measurements at a single network component is considered. By phrasing the detection task as a Maximum A Posteriori Probability hypothesis testing problem, we are able to obtain conditions under which the detection is (1) improved over the a priori and (2) asymptotically perfect, in terms of the network spectrum and graph. We find that, in the case where the detector has knowledge of the network's state, perfect detection is possible under general connectivity conditions regardless of the measurement location. When the detector does not have state knowledge, a remote signature permits improved but not perfect detection, under the same connectivity conditions. At its essence, detectability is achieved because of the close connection between a network's topology, its eigenvalues and local response characteristics. (C) 2015 Elsevier B.V. All rights reserved.
机译：我们研究是否可以将复杂网络中的局部结构变化与网络动力学的被动远程时程测量区分开。具体而言，考虑了根据单个网络组件上的噪声测量来检测网络同步过程中的链路故障。通过将检测任务表述为最大后验概率假设检验问题，我们能够获得在网络频谱和图形方面，检测（1）比先验改进和（2）渐近完善的条件。我们发现，在检测器了解网络状态的情况下，无论测量位置在哪里，都可以在常规连接条件下进行完美检测。当检测器不具备状态知识时，在相同的连接条件下，远程签名可以改善检测效果，但不能完美检测。从本质上讲，由于网络拓扑，特征值和本地响应特性之间的紧密联系而实现了可检测性。 （C）2015 Elsevier B.V.保留所有权利。

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