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Mixed Membership Stochastic Blockmodels
Edo M Airoldi · David Blei · Stephen E Fienberg · Eric Xing

Wed Dec 10 11:56 AM -- 11:57 AM (PST) @
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Observations consisting of measurements on relationships for pairs of objects arise in many settings, such as protein interaction and gene regulatory networks, collections of author-recipient email, and social networks. Analyzing such data with probabilisic models can be delicate because the simple exchangeability assumptions underlying many boilerplate models no longer hold. In this paper, we describe a class of latent variable models of such data called Mixed Membership Stochastic Blockmodels. This model extends blockmodels for relational data to ones which capture mixed membership latent relational structure, thus providing an object-specific low-dimensional representation. We develop a general variational inference algorithm for fast approximate posterior inference. We explore applications to social networks and protein interaction networks.

Author Information

Edo M Airoldi (Harvard University)
David Blei (Columbia University)
Stephen E Fienberg (Carnegie Mellon University)
Eric Xing (Petuum Inc. / Carnegie Mellon University)

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