List questions from sparse-matrices

Published on 22 May 2021 - 4:41

72

Views

Solving a sparse vector $x$ from system $Ax=b$ at the fastest possible way?

Published on 31 May 2021 - 16:41

111

Views

Find a sparse surrogate matrix that performs as good as the original one

Published on 01 Jun 2021 - 4:54

257

Views

LSQR method for solving a linear equation with positive value constraint for one column of the solution

Published on 12 Jun 2021 - 15:22

52

Views

Why large linear systems of saddle point type are indefiniteness and often poor spectral properties?

Published on 21 Jun 2021 - 20:52

167

Views

Solve Ax = b (A and b both large and very sparse), but only for the values in some rows of x

Published on 02 Jul 2021 - 12:18

347

Views

Sparse PCA vs Orthogonal Matching Pursuit

Published on 25 Mar 2026 - 9:48

122

Views

Failure to invert sparse matrix

Published on 26 Mar 2026 - 9:45

161

Views

Reordering vertices of a graph to make the adjacency matrix a block matrix with band-shaped blocks

Published on 26 Mar 2026 - 6:31

465

Views

Measure of closeness of a matrix to the block diagonal form

Published on 20 Sep 2021 - 20:27

129

Views

How to understand each optimization step of Jacobi Iterative

Published on 19 Oct 2021 - 6:07

15

Views

Sparse least squares where the coeefficient matrix is not stored explicitly

Published on 04 Mar 2026 - 1:01

13

Views

Is there a way to increase the speed of multiplying $(-x^T\delta\ x )$

Published on 10 Dec 2021 - 12:55

59

Views

Exponential of a special matrix

Published on 18 Dec 2021 - 9:42

247

Views

Inverse of a particular sparse matrix

Published on 01 Jan 2022 - 11:22

List Question

Relationship between matrices whose singular values are the same

Solving a sparse vector $x$ from system $Ax=b$ at the fastest possible way?

Find a sparse surrogate matrix that performs as good as the original one

LSQR method for solving a linear equation with positive value constraint for one column of the solution

Why large linear systems of saddle point type are indefiniteness and often poor spectral properties?

Solve Ax = b (A and b both large and very sparse), but only for the values in some rows of x

Sparse PCA vs Orthogonal Matching Pursuit

Failure to invert sparse matrix

Reordering vertices of a graph to make the adjacency matrix a block matrix with band-shaped blocks

Measure of closeness of a matrix to the block diagonal form

How to understand each optimization step of Jacobi Iterative

Sparse least squares where the coeefficient matrix is not stored explicitly

Is there a way to increase the speed of multiplying $(-x^T\delta\ x )$

Exponential of a special matrix

Inverse of a particular sparse matrix

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