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Internet topologies discovered by standard traceroute-based probing schemes are limited by many factors. One of the main factors is the ambiguity of the returned interfaces, where multiple unique interface IP addresses belong to the same physical router. The unknown assignment of interface IPs to physical routers can result in grossly inflated estimated… (More)
This paper presents a studies the identification of roles in TCP Connection Networks. Based on the characterization of the strucutral properties of these networks, we develop simple algorithms to identify roles of vertices when this information is not available (e.g., undirected connection graph).
When information sources are moderated by recommender systems, so-called "filter bubbles" may restrict the diversity of content made available to users, potentially affecting their opinions. User opinions may in turn affect the output of recommender systems. In this work we ask how the dynamical system defined by user and recommender systems behaves, as… (More)