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Poster
Discovering Structure in High-Dimensional Data Through Correlation Explanation
Greg Ver Steeg · Aram Galstyan

Thu Dec 11 11:00 AM -- 03:00 PM (PST) @ Level 2, room 210D #None

We introduce a method to learn a hierarchy of successively more abstract representations of complex data based on optimizing an information-theoretic objective. Intuitively, the optimization searches for a set of latent factors that best explain the correlations in the data as measured by multivariate mutual information. The method is unsupervised, requires no model assumptions, and scales linearly with the number of variables which makes it an attractive approach for very high dimensional systems. We demonstrate that Correlation Explanation (CorEx) automatically discovers meaningful structure for data from diverse sources including personality tests, DNA, and human language.

Author Information

Greg Ver Steeg (USC Information Sciences Institute)
Aram Galstyan (USC Information Sciences Institute)

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