IEEE

Interpreting off-diagonal terms in polarimetric coherency matrix

Abstract: This paper addresses interpretation of off-diagonal terms in the coherency matrix of polarimetric SAR data. The off-diagonal terms, especially the correlations between copolarization and ...
Scientific Research Publishing

Inverse Nonnegativity of Tridiagonal M-Matrices under Diagonal Element-Wise Perturbation ()

1 Department of Mathematics, Faculty of Science, Menoufia University, Shebeen El-Kom, Egypt. 2 Department of Mathematics, Faculty of Science, Zagazig University, Ash Sharqiyah, Egypt. In many ...
IEEE

A Block Diagonal Markov Model for Indoor Software-Defined Power Line Communication

Abstract: A Semi-Hidden Markov Model (SHMM) for bursty error channels is defined by a state transition probability matrix A, a prior probability vector Π, and the ...
International Monetary Fund

High-Dimensional Covariance Matrix Estimation: Shrinkage Toward a Diagonal Target

Download PDF More Formats on IMF eLibrary Order a Print Copy Create Citation This paper proposes a novel shrinkage estimator for high-dimensional covariance matrices by extending the Oracle ...
GitHub

GMRES implementation for Toeplitz-like (Toeplitz, Hankel, Circulant) matrices and mixed (combinations of Diagonal ones and Toeplitz-like ones) matrices

We propose implementations of the Generalized Minimal Residual Method (GMRES) for solving linear systems based on dense, Toeplitz or mixed matrices. The software consists of a python module and a C++ ...
Simon Fraser University

Covariance Matrix

The estimated covariance matrix of the parameter estimates is computed as the inverse Hessian matrix, and for unconstrained problems it should be positive definite. If the final parameter estimates ...