Andrew Knyazev
Followers: 0 Following: 0
http://en.wikipedia.org/wiki/Andrei_Knyazev_(mathematician) Professional Interests: matrix computations, numerical PDEs, signal, image & video processing, data analytics and mining, data coding and transmission, material sciences, and model predictive control.
Statistics
RANK
1 161
of 298 937
REPUTATION
64
CONTRIBUTIONS
0 Questions
33 Answers
ANSWER ACCEPTANCE
0.00%
VOTES RECEIVED
18
RANK
599 of 20 661
REPUTATION
2 978
AVERAGE RATING
4.60
CONTRIBUTIONS
11 Files
DOWNLOADS
35
ALL TIME DOWNLOADS
28743
RANK
of 162 923
CONTRIBUTIONS
0 Problems
0 Solutions
SCORE
0
NUMBER OF BADGES
0
CONTRIBUTIONS
0 Posts
CONTRIBUTIONS
0 Public Channels
AVERAGE RATING
CONTRIBUTIONS
0 Highlights
AVERAGE NO. OF LIKES
Feeds
How can I get Matlab toolbox KSSOLV? In which package is it?
https://bitbucket.org/berkeleylab/kssolv2.0/src/release/
nästan 3 år ago | 0
Spectral clustering a grpah into k cluster
asdamle/QR-spectral-clustering: Code implements the methodology in arXiv:1609.08251 for multi-way spectral clustering (github.co...
ungefär 3 år ago | 0
eigs with big sparse matrix has Internal error
try running Locally Optimal Block Preconditioned Conjugate Gradient - File Exchange - MATLAB Central (mathworks.com)
ungefär 3 år ago | 0
The eigenvalues of eigs change with the input target, Why?
This may be expected. One can fix it by running with muiltiple targets, collecting all the resulting eigenvectors and writing an...
mer än 3 år ago | 0
| accepted
Submitted
subspacea - Angles between subspaces
Angles between subspaces and canonical correlations in general scalar products.
mer än 3 år ago | 5 downloads |
Submitted
Locally Optimal Block Preconditioned Conjugate Gradient
LOBPCG solves Hermitian partial generalized eigenvalue problems using preconditioning, as well as PCA
ungefär 4 år ago | 14 downloads |
Eigs in multinode cluster
EIGS has limited support for distributed memory, so you can run it only on a single node, but see the answer from Christine Tob...
ungefär 6 år ago | 0
| accepted
How do read .npy files in matlab?
https://github.com/kwikteam/npy-matlab
ungefär 6 år ago | 14
| accepted
Error returned in Eigs Function " Undefined operator '.*' "
Looks like a bug in chebfun - just make this comment at <https://www.mathworks.com/matlabcentral/fileexchange/47023-chebfun-curr...
mer än 6 år ago | 0
eigs does not return the eigenvalues closest to shift sigma
You may also want to try https://www.mathworks.com/matlabcentral/fileexchange/48-lobpcg-m passing your function handle to it. Co...
mer än 6 år ago | 0
find eigenvalues of a very large sparse matrix
If the matrix is real symmetric or Hermitian, you may also want to try https://www.mathworks.com/matlabcentral/fileexchange/48-l...
mer än 6 år ago | 0
LOBPCG Initial k eigenvectors approximation
See https://en.wikipedia.org/wiki/LOBPCG#Convergence_theory_and_practice
mer än 6 år ago | 0
eigs() runs faster for more eigenvalues of the same matrix
Please check <https://www.mathworks.com/matlabcentral/fileexchange/48-lobpcg-m> that has probably faster and more predictable co...
nästan 7 år ago | 1
How do i obtain only the first principal component?
https://www.mathworks.com/matlabcentral/fileexchange/48-lobpcg-m can be used as the method for calculating the eigenvector corre...
nästan 7 år ago | 0
Smallest non-zero eigenvalue for a generalized eigenvalue problem
Since both matrices A and B are singular, it is not an easy problem numerically. Even eig(full(A), full(B)) may give you wrong a...
nästan 7 år ago | 0
| accepted
How to parallel for the computation of eigensystem of a sparse matrix
use SLEPc
ungefär 10 år ago | 0
Find max/min eigenvalue of a symmetric matrix
try http://www.mathworks.com/matlabcentral/fileexchange/48-lobpcg-m
ungefär 10 år ago | 1
positive-definiteness of a huge sparse matrix
try http://www.mathworks.com/matlabcentral/fileexchange/48-lobpcg-m
ungefär 10 år ago | 0
how can i find k-eigenvalues faster than eig for hermitian dense matrix
try http://www.mathworks.com/matlabcentral/fileexchange/48-lobpcg-m
ungefär 10 år ago | 0
Take advantage of Hermitian matrices with eigs
You need to be more specific. Also, try http://www.mathworks.com/matlabcentral/fileexchange/48-lobpcg-m
ungefär 10 år ago | 0
| accepted
Sparse solver for large symmetric matrices
both eigs and http://www.mathworks.com/matlabcentral/fileexchange/48-lobpcg-m can be used in a matrix-free fashion, only needing...
ungefär 10 år ago | 0
Difference between eigs and eig
Is this behavior expected? - Yes. Eigs uses a tricky method that may give the results you describe, especially for funny mat...
ungefär 10 år ago | 0
eigs function: incorrect eigenvectors
This is normal for eigs. If you are happy with eig, just stay with it.
ungefär 10 år ago | 0
Why can't I compute the interior eigenvalues of a sparse matrix with "eigs" without inversion in MATLAB?
check https://www.mathworks.com/matlabcentral/fileexchange/48-locally-optimal-block-preconditioned-conjugate-gradient
ungefär 10 år ago | 0
How can I get the (approximate) eigenvectors of a huge matrix?
try http://www.mathworks.com/matlabcentral/fileexchange/48-lobpcg-m
ungefär 10 år ago | 0
How can I speed up the eigen value and eigen vector computations for a non-sparse matrix?
check http://www.mathworks.com/matlabcentral/fileexchange/48-lobpcg-m
ungefär 10 år ago | 0
How can the Cholesky decomposition step in eigs() be avoided without passing a matrix to eigs that is a Cholesky decomposition?
check http://www.mathworks.com/matlabcentral/fileexchange/48-lobpcg-m
ungefär 10 år ago | 0
