1.1k citations · 5.4k across the 59 of their papers we have counts for
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stat.ML2008★ 49 cited
High-dimensional covariance estimation by minimizing -penalized log-determinant divergence
Pradeep Ravikumar, Martin J. Wainwright, Garvesh Raskutti +1
Given i.i.d. observations of a random vector , we study the problem of estimating both its covariance matrix , and its inverse covariance or concentration…
stat.ML2008★ 76 cited
Data spectroscopy: Eigenspaces of convolution operators and clustering
Tao Shi, Mikhail Belkin, Bin Yu
This paper focuses on obtaining clustering information about a distribution from its i.i.d. samples. We develop theoretical results to understand and use clustering information con…