GHS_indef/brainpc2
Gould, Hu, & Scott: biological model (CUTEr)
Name |
brainpc2 |
Group |
GHS_indef |
Matrix ID |
1298 |
Num Rows
|
27,607 |
Num Cols
|
27,607 |
Nonzeros
|
179,395 |
Pattern Entries
|
179,395 |
Kind
|
Optimization Problem |
Symmetric
|
Yes |
Date
|
1994 |
Author
|
N. Duatrebande |
Editor
|
P. Toint |
Structural Rank |
27,607 |
Structural Rank Full |
true |
Num Dmperm Blocks
|
2 |
Strongly Connect Components
|
2 |
Num Explicit Zeros
|
0 |
Pattern Symmetry
|
100% |
Numeric Symmetry
|
100% |
Cholesky Candidate
|
no |
Positive Definite
|
no |
Type
|
real |
SVD Statistics |
Matrix Norm |
4.464852e+03 |
Minimum Singular Value |
1.000000e-01 |
Condition Number |
4.464852e+04
|
Rank |
27,607 |
sprank(A)-rank(A) |
0 |
Null Space Dimension |
0 |
Full Numerical Rank? |
yes |
Download Singular Values |
MATLAB
|