Results 171 to 180 of about 22,359,362 (203)

A Note on the Efficiency of Sandwich Covariance Matrix Estimation

Journal of the American Statistical Association, 2001
Göran Kauermann
exaly  

What Should be Done When an Estimated between-Group Covariance Matrix is not Nonnegative Definite?

American Statistician, 1985
Yasuo Amemiya
exaly  

General class of covariance structures for two or more repeated factors in longitudinal data analysis

Communications in Statistics - Theory and Methods, 1994
Andrzej Galecki
exaly  

First-Order Methods for Sparse Covariance Selection

SIAM Journal on Matrix Analysis and Applications, 2008
Laurent El Ghaoui, Alexandre D'Aspremont   +1 more
exaly  

On the calculation of entropy from covariance matrices of the atomic fluctuations

Journal of Chemical Physics, 2001
Ioan Andricioaei
exaly  

Generalized Thresholding of Large Covariance Matrices

Journal of the American Statistical Association, 2009
Elizaveta Levina, Ji Zhu, Adam J Rothman   +2 more
exaly  

Covariance Regression Analysis

Journal of the American Statistical Association, 2017
Hansheng Wang, Tao Zou, Chih-Ling Tsai   +2 more
exaly  

Kalman Filter With Recursive Covariance Estimation—Sequentially Estimating Process Noise Covariance

IEEE Transactions on Industrial Electronics, 2014
Hongbin Ma, Bo Wang, Mengyin Fu
exaly  

Estimation of structured covariance matrices

Proceedings of the IEEE, 1982
exaly  

Estimation in Covariance Components Models

Journal of the American Statistical Association, 1981
A P Dempster
exaly