GHS_indef/c-55
Schenk: IBM TJ Watson, Yorktown, nonlinear optimization
| Name |
c-55 |
| Group |
GHS_indef |
| Matrix ID |
1220 |
|
Num Rows
|
32,780 |
|
Num Cols
|
32,780 |
|
Nonzeros
|
403,450 |
|
Pattern Entries
|
403,450 |
|
Kind
|
Optimization Problem |
|
Symmetric
|
Yes |
|
Date
|
2004 |
|
Author
|
IBM |
|
Editor
|
O. Schenk |
| Structural Rank |
32,780 |
| Structural Rank Full |
true |
|
Num Dmperm Blocks
|
1 |
|
Strongly Connect Components
|
1 |
|
Num Explicit Zeros
|
0 |
|
Pattern Symmetry
|
100% |
|
Numeric Symmetry
|
100% |
|
Cholesky Candidate
|
no |
|
Positive Definite
|
no |
|
Type
|
real |
| SVD Statistics |
| Matrix Norm |
9.404468e+04 |
| Minimum Singular Value |
1.982253e-04 |
| Condition Number |
4.744334e+08
|
| Rank |
32,780 |
| sprank(A)-rank(A) |
0 |
| Null Space Dimension |
0 |
| Full Numerical Rank? |
yes |
| Download Singular Values |
MATLAB
|
| Download |
MATLAB
Rutherford Boeing
Matrix Market
|
| Notes |
Revised Nov 2006; relative eps changes to A, right-hand-side added.
Note that this matrix should have been placed in the Schenk_IBMNA/
directory when it was first added in August 2004, but moving it now
would disrupt exising users of the collection.
|
