Results 11 to 20 of about 194,943,063 (149)

Alternative methods for representing the inverse of linear programming basis matrices [PDF]

open access: yes, 1988
Methods for representing the inverse of Linear Programming (LP) basis matrices are closely related to techniques for solving a system of sparse unsymmetric linear equations by direct methods.
Mitra, G, Tamiz, M
core   +4 more sources

Spectral analysis of large reflexive generalized inverse and Moore-Penrose inverse matrices [PDF]

open access: yes, 2020
A reflexive generalized inverse and the Moore-Penrose inverse are often confused in statistical literature but in fact they have completely different behaviour in case the population covariance matrix is not a multiple of identity.
Parolya, Nestor   +3 more
core   +1 more source

Uniform bounds on the 1-norm of the inverse of lower triangular Toeplitz matrices [PDF]

open access: yes, 2011
A uniform bound on the 1-norm is given for the inverse of a lower triangular Toeplitz matrix with non-negative monotonically decreasing entries whose limit is zero. The new bound is sharp under certain specified constraints.
Yuan, Y.X.   +3 more
core   +3 more sources

W-weighted GDMP inverse for rectangular matrices [PDF]

open access: yes, 2022
In this article, we introduce two new generalized inverses for rectangular matrices called $W$-weighted generalized-Drazin--Moore--Penrose (GDMP) and $W$-weighted generalized-Drazin-reflexive (GDR) inverses. The first generalized inverse can be seen as a
Shekhar, Vaibhav   +2 more
core   +1 more source

Completion of Matrix Inversions Using Elementary Matrix Inverse Multiplication Method [PDF]

open access: yes, 2020
.   Given a matrix A is ordo . Elementary matrix inverse multiplication  produces inverse matrix A which is  where I is an identity matrix and  is an inverse matrix A.
Cipta, Hendra   +2 more
core   +1 more source

An Introduction to Predictive Processing Models of Perception and Decision‐Making

open access: yesTopics in Cognitive Science, EarlyView., 2023
Abstract The predictive processing framework includes a broad set of ideas, which might be articulated and developed in a variety of ways, concerning how the brain may leverage predictive models when implementing perception, cognition, decision‐making, and motor control.
Mark Sprevak, Ryan Smith
wiley   +1 more source

ON THE MEAN AND DISPERSION OF THE MOORE-PENROSE GENERALIZED INVERSE OF A WISHART MATRIX [PDF]

open access: yes, 2020
The Moore-Penrose inverse of a singular Wishart matrix is studied. When the scale matrix equals the identity matrix the mean and dispersion matrices of the Moore-Penrose inverse are known. When the scale matrix has an arbitrary structure no exact results
von Rosen, Dietrich   +5 more
core   +1 more source

Properties of the inverse of a noncentral Wishart matrix [PDF]

open access: yes, 2021
The inverse of a non-central Wishart matrix occurs in a variety of contexts inmultivariate statistical work, including instrumental variables (IV) regression, but there has been very little work on its properties.
Hillier, Grant   +3 more
core   +1 more source

Matrix Equation’s Reflexive and Anti-Reflexive Solutions over Quaternions

open access: yes, 2022
We consider when the quaternion matrix equation AXB+CXD=E has a reflexive (or anti-reflexive) solution with respect to a given generalized reflection matrix. We adopt a real representation method to derive the solutions when it is solvable.
Yang Zhang, Xin Liu, Kaiqi Wen
core   +1 more source

Tests of Linear Hypotheses Using a Generalized Inverse Matrix [PDF]

open access: yes, 1965
16 pages, 1 article*Tests of Linear Hypotheses Using a Generalized Inverse Matrix* (Searle, S.
Searle, S. R.   +3 more
core   +5 more sources

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