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Internet tomography

机译：互联网断层扫描

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Today's Internet is a massive, distributed network which continuesnto explode in size as e-commerce and related activities grow. Thenheterogeneous and largely unregulated structure of the Internet rendersntasks such as dynamic routing, optimized service provision,nservice-level verification, and detection of anomalous/maliciousnbehavior increasingly challenging tasks. The problem is compounded bynthe fact that one cannot rely on the cooperation of individual serversnand routers to aid in the collection of network traffic measurementsnvital for these tasks. In many ways, network monitoring and inferencenproblems bear a strong resemblance to other "inverse problems" in whichnkey aspects of a system are not directly observable. Familiar signalnprocessing problems such as tomographic image reconstruction, systemnidentification, and array processing all have interestingninterpretations in the networking context. This article introduces thennew field of network tomography, a field which we believe will benefitngreatly from the wealth of signal processing theory and algorithms
机译：当今的Internet是一个庞大的分布式网络，随着电子商务和相关活动的增长，其规模一直在爆炸式增长。然后，Internet的异构且很大程度上不受监管的结构会呈现出诸如动态路由，优化服务提供，n服务级别验证以及检测异常/恶意行为等挑战性任务的任务。由于不能依靠单个服务器和路由器的协作来协助完成这些任务所必需的网络流量测量，这一问题使问题更加复杂。在许多方面，网络监视和推理问题与其他“逆问题”非常相似，在这些“逆问题”中，系统的关键方面无法直接观察到。诸如断层图像重建，系统识别和阵列处理之类的熟悉的信号处理问题在网络环境中都有有趣的解释。本文介绍了网络层析成像的新领域，我们相信该领域将从信号处理理论和算法的丰富中真正受益

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