GHS_indef/exdata_1
MATRIX EXDATA FROM STEVE WRIGHT . MA57 SLOWER THAN MA27
Name |
exdata_1 |
Group |
GHS_indef |
Matrix ID |
1235 |
Num Rows
|
6,001 |
Num Cols
|
6,001 |
Nonzeros
|
2,269,500 |
Pattern Entries
|
2,269,501 |
Kind
|
Optimization Problem |
Symmetric
|
Yes |
Date
|
2004 |
Author
|
S. Wright |
Editor
|
N. Gould, Y. Hu, J. Scott |
Structural Rank |
6,001 |
Structural Rank Full |
true |
Num Dmperm Blocks
|
1 |
Strongly Connect Components
|
1 |
Num Explicit Zeros
|
1 |
Pattern Symmetry
|
100% |
Numeric Symmetry
|
100% |
Cholesky Candidate
|
no |
Positive Definite
|
no |
Type
|
real |
SVD Statistics |
Matrix Norm |
3.695657e+08 |
Minimum Singular Value |
3.486051e-04 |
Condition Number |
1.060127e+12
|
Rank |
6,000 |
sprank(A)-rank(A) |
1 |
Null Space Dimension |
1 |
Full Numerical Rank? |
no |
Download Singular Values |
MATLAB
|