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Stochastics and Statistics Seminar
Discovering hidden structures in complex networks
October 9, 2015 @ 11:00 am - 12:00 pm
Roman Vershynin (University of Michigan)
Most big real-world networks (social, technological, biological) are sparse. Most of networks have noticeable structure, which can be formed by clusters (communities) and hubs. When and how can a hidden structure be recovered from a sparse network? Known approaches to this problem come from a variety of disciplines – probability, combinatorics, physics, statistics, optmization, information theory, etc. We will focus on the recently developed probabilistic approaches motivated by sparse recovery, where a network is regarded as a random measurement of the hidden structure
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