Richard Y. Zhang

activity

20162020

most citedA theory on the absence of spurious solutions for nonconvex and nonsmooth optimization

21 citations · 103 across the 11 of their papers we have counts for

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2 papers · 1 filter

stat.ML2018★ 3 cited

Large-Scale Sparse Inverse Covariance Estimation via Thresholding and Max-Det Matrix Completion

Richard Y. Zhang, Salar Fattahi, Somayeh Sojoudi

The sparse inverse covariance estimation problem is commonly solved using an $ℓ_{1}$ -regularized Gaussian maximum likelihood estimator known as "graphical lasso", but its comput…

stat.ML2017

Sparse Inverse Covariance Estimation for Chordal Structures

Salar Fattahi, Richard Y. Zhang, Somayeh Sojoudi

In this paper, we consider the Graphical Lasso (GL), a popular optimization problem for learning the sparse representations of high-dimensional datasets, which is well-known to be…