HB/well1850
UNSYMMETRIC LEAST-SQUARES PROBLEM. SAUNDERS 1979.
| Name |
well1850 |
| Group |
HB |
| Matrix ID |
261 |
|
Num Rows
|
1,850 |
|
Num Cols
|
712 |
|
Nonzeros
|
8,755 |
|
Pattern Entries
|
8,758 |
|
Kind
|
Least Squares Problem |
|
Symmetric
|
No |
|
Date
|
1979 |
|
Author
|
M. Saunders |
|
Editor
|
I. Duff, R. Grimes, J. Lewis |
| Structural Rank |
712 |
| Structural Rank Full |
true |
|
Num Dmperm Blocks
|
10 |
|
Strongly Connect Components
|
1 |
|
Num Explicit Zeros
|
3 |
|
Pattern Symmetry
|
0% |
|
Numeric Symmetry
|
0% |
|
Cholesky Candidate
|
no |
|
Positive Definite
|
no |
|
Type
|
real |
| SVD Statistics |
| Matrix Norm |
1.794328e+00 |
| Minimum Singular Value |
1.611968e-02 |
| Condition Number |
1.113129e+02
|
| Rank |
712 |
| sprank(A)-rank(A) |
0 |
| Null Space Dimension |
0 |
| Full Numerical Rank? |
yes |
| Download Singular Values |
MATLAB
|
