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MA
2010
Springer
140views Communications» more  MA 2010»
15 years 3 months ago
On the limiting spectral distribution of the covariance matrices of time-lagged processes
We consider two continuous-time Gaussian processes, one being partially correlated to a time-lagged version of the other. We first give the limiting spectral distribution for the ...
Christian Y. Robert, Mathieu Rosenbaum
SIAMIS
2010
86views more  SIAMIS 2010»
15 years 3 months ago
Sensitivity Analysis of Multichannel Images Intended for Instantaneous Imaging Spectrometry Applications
This paper presents a sensitivity analysis of using instantaneous multichannel two-dimensional (2D) imaging to achieve instantaneous 2D imaging spectroscopy. A simulated multiple-...
Hamed Hamid Muhammed, Fredrik Bergholm
MMAS
2010
Springer
14 years 11 months ago
Filtering Random Layering Effects in Imaging
Objects that are buried deep in heterogeneous media produce faint echoes which are difficult to distinguish from the backscattered field. Sensor array imaging in such media cannot ...
Liliana Borcea, F. González del Cueto, Geor...
SIAMMAX
2010
145views more  SIAMMAX 2010»
14 years 11 months ago
Adaptive First-Order Methods for General Sparse Inverse Covariance Selection
In this paper, we consider estimating sparse inverse covariance of a Gaussian graphical model whose conditional independence is assumed to be partially known. Similarly as in [5],...
Zhaosong Lu
CSDA
2010
157views more  CSDA 2010»
15 years 4 months ago
Robust estimation of constrained covariance matrices for confirmatory factor analysis
Confirmatory factor analysis (CFA) is a data anylsis procedure that is widely used in social and behavioral sciences in general and other applied sciences that deal with large qua...
E. Dupuis Lozeron, M. P. Victoria-Feser