GHS_indef/c-62ghs
Gould,Hu,Scott: nearly same pattern as Schenk_IBMNA/c-62, diff. values
| Name |
c-62ghs |
| Group |
GHS_indef |
| Matrix ID |
1223 |
|
Num Rows
|
41,731 |
|
Num Cols
|
41,731 |
|
Nonzeros
|
559,339 |
|
Pattern Entries
|
559,343 |
|
Kind
|
Subsequent Optimization Problem |
|
Symmetric
|
Yes |
|
Date
|
2004 |
|
Author
|
IBM |
|
Editor
|
O. Schenk |
| Structural Rank |
41,731 |
| Structural Rank Full |
true |
|
Num Dmperm Blocks
|
3 |
|
Strongly Connect Components
|
3 |
|
Num Explicit Zeros
|
4 |
|
Pattern Symmetry
|
100% |
|
Numeric Symmetry
|
100% |
|
Cholesky Candidate
|
no |
|
Positive Definite
|
no |
|
Type
|
real |
| Download |
MATLAB
Rutherford Boeing
Matrix Market
|
| Notes |
next: - first: Schenk_IBMNA/c-62
A version of this matrix was first obtained from Olaf Schenk in October
2003. That version appears in this collection as Schenk_IBMNA/c-62.
In August 2004, a new version appeared in the GHS collection, under the
same name, and was added here as GHS_indef/c-62ghs. The c-62ghs matrix
is the same as the version on Schenk's web site as of Nov 2006, except
that the right-hand-side was missing in the version in the UF Sparse
Matrix Collection (now included). The two matrices c-62 and c-62ghs
are very similar, but not identical.
|
