Search Results for author: Karthik Mohan

Found 5 papers, 0 papers with code

Learning Graphical Models With Hubs

no code implementations28 Feb 2014 Kean Ming Tan, Palma London, Karthik Mohan, Su-In Lee, Maryam Fazel, Daniela Witten

We consider the problem of learning a high-dimensional graphical model in which certain hub nodes are highly-connected to many other nodes.

ADMM Algorithm for Graphical Lasso with an $\ell_{\infty}$ Element-wise Norm Constraint

no code implementations28 Nov 2013 Karthik Mohan

We consider the problem of Graphical lasso with an additional $\ell_{\infty}$ element-wise norm constraint on the precision matrix.

Node-Based Learning of Multiple Gaussian Graphical Models

no code implementations21 Mar 2013 Karthik Mohan, Palma London, Maryam Fazel, Daniela Witten, Su-In Lee

We consider estimation under two distinct assumptions: (1) differences between the K networks are due to individual nodes that are perturbed across conditions, or (2) similarities among the K networks are due to the presence of common hub nodes that are shared across all K networks.

Structured Learning of Gaussian Graphical Models

no code implementations NeurIPS 2012 Karthik Mohan, Mike Chung, Seungyeop Han, Daniela Witten, Su-In Lee, Maryam Fazel

We consider estimation of multiple high-dimensional Gaussian graphical models corresponding to a single set of nodes under several distinct conditions.

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