How does the Web look? How could we tell an abnormal social network from a normal one?
These and similar questions are important in many fields where the data can intuitively be …

Statistical issues arising in modelling univariate extremes of a random sample have been
successfully used in the most diverse fields, such as biometrics, finance, insurance and risk …

This article presents a detailed workload characterization study of the 1998 World Cup Web
site. Measurements from this site were collected over a three-month period. During this time …

Performance evaluation is often the critical part of evaluating the results of a research
project. Many of us are familiar with simulations, but it is frequently difficult to address …

In this paper, we study the live streaming workload from a large content delivery network.
Our data, collected over a 3 month period, contains over 70 million requests for 5,000 …

We propose a user model that explains the shape of the distribution of file sizes in local file
systems and in the World Wide Web. We examine evidence from 562 file systems, 38 web …

Exceedances over high thresholds are often modeled by fitting a generalized Pareto
distribution (GPD) on R+. It is difficult to select the threshold, above which the GPD …

Previous studies of Internet traffic have shown that a very small percentage of flows
consume most of the network bandwidth. It is important to understand the characteristics of …

We measure and analyze the single-hop packet delay through operational routers in the
Sprint Internet protocol (IP) backbone network. After presenting our delay measurements …

To support latency sensitive traffic such as voice, network providers can either use service
differentiation to prioritize such traffic or provision their network with enough bandwidth so …