Matrix: Rajat/rajat07
Description: Rajat/rajat07 circuit simulation matrix
(undirected graph drawing) |
Matrix properties | |
number of rows | 14,842 |
number of columns | 14,842 |
nonzeros | 63,913 |
structural full rank? | yes |
structural rank | 14,842 |
# of blocks from dmperm | 143 |
# strongly connected comp. | 1 |
explicit zero entries | 0 |
nonzero pattern symmetry | symmetric |
numeric value symmetry | symmetric |
type | binary |
structure | symmetric |
Cholesky candidate? | no |
positive definite? | no |
author | Rajat |
editor | T. Davis |
date | 2004 |
kind | circuit simulation problem |
2D/3D problem? | no |
Ordering statistics: | result |
nnz(chol(P*(A+A'+s*I)*P')) with AMD | 201,227 |
Cholesky flop count | 1.1e+07 |
nnz(L+U), no partial pivoting, with AMD | 387,612 |
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD | 376,518 |
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD | 695,652 |
SVD-based statistics: | |
norm(A) | 9.63407 |
min(svd(A)) | 0.0122044 |
cond(A) | 789.391 |
rank(A) | 14,842 |
sprank(A)-rank(A) | 0 |
null space dimension | 0 |
full numerical rank? | yes |
singular values (MAT file): | click here |
SVD method used: | s = svd (full (A)) ; |
status: | ok |
For a description of the statistics displayed above, click here.
Maintained by Tim Davis, last updated 12-Mar-2014.
Matrix pictures by cspy, a MATLAB function in the CSparse package.
Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.