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Abstract:
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Network tomography, first introduced in Vardi (1996), characterizes two classes of large-scale inverse problems that arise in the modeling and analysis of computer and communications networks. This talk will deal with active network tomography where the goal is to recover link-level quality of service parameters, such as packet loss rates and delay distributions, from end-to-end, path-level measurements. Internet service providers use this to characterize network performance and monitor service quality. We will provide a review of recent developments, including the design of probing experiments, inference for loss rates and delay distributions, and applications to network monitoring. This is joint work with George Michailidis, Earl Lawrence, Bowei Xi, and Xiaodong Yang.
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