62 citations · 118 across the 3 of their papers we have counts for
3 papers
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…
math.ST2008★ 62 cited
High-Dimensional Graphical Model Selection Using -Regularized Logistic Regression
Pradeep Ravikumar, Martin J. Wainwright, John D. Lafferty
We consider the problem of estimating the graph structure associated with a discrete Markov random field. We describe a method based on -regularized logistic regression, in…
math.ST2007★ 7 cited
Sparse Additive Models
Pradeep Ravikumar, John Lafferty, Han Liu +1
We present a new class of methods for high-dimensional nonparametric regression and classification called sparse additive models (SpAM). Our methods combine ideas from sparse linea…