Convex Relaxation for Community Detection with Covariates

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• Purna Sarkar (University of Texas at Austin)
• Friday 15 July 2016, 16:00-16:30
• Seminar Room 1, Newton Institute.

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SNAW01 - Graph limits and statistics

Community detection in networks is an important problem in many applied areas. We investigate this in the presence of node covariates. Recently, an emerging body of theoretical work has been focused on  leveraging information from both the edges in the network and the node covariates to infer community memberships. However, in most parameter regimes, one of the sources of information provides enough information to infer the hidden clusters, thereby making the other source redundant. We show that when the network and the covariates carry ``orthogonal'' pieces of information about the cluster memberships, one can get asymptotically consistent clustering by using them both, while each of them fails individually. 

This is joint work with Bowei Yan, University of Texas at Austin.

This talk is part of the Isaac Newton Institute Seminar Series series.

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