Optimal Rates of Convergence for Covariance Matrix Estimation
Tony Cai, Cun-Hui Zhang, and Harrison H. Zhou
Cai, T., Liu, W. & Luo, X. (2011).
A constrained l_{1} minimization approach to sparse precision matrix estimation
J. American Statistical Association 106, 594-607.
Cai, T. & Liu, W. (2011).
Adaptive thresholding for sparse covariance matrix estimation.
J. American Statistical Association 106, 672-684.
Cai, T. & Zhou, H. (2012).
Minimax estimation of large covariance matrices under l_{1} norm (with discussion)
Statistica Sinica 22, 1319-1378.
Cai, T. & Zhou, H. (2012).
Optimal rates of convergence for sparse covariance matrix estimation.
The Annals of Statistics 40, 2389-2420.
Cai, T. & Yuan, M. (2012).
Adaptive covariance matrix estimation through block thresholding.
The Annals of Statistics 40, 2014-2042.