ANSYS/Delor64K
underdetermined system from ANSYS
| Name |
Delor64K |
| Group |
ANSYS |
| Matrix ID |
2651 |
|
Num Rows
|
64,719 |
|
Num Cols
|
1,785,345 |
|
Nonzeros
|
652,140 |
|
Pattern Entries
|
652,140 |
|
Kind
|
Least Squares Problem |
|
Symmetric
|
No |
|
Date
|
2011 |
|
Author
|
E. Delor |
|
Editor
|
T. Davis |
| Structural Rank |
64,719 |
| Structural Rank Full |
true |
|
Num Dmperm Blocks
|
1 |
|
Strongly Connect Components
|
1,623,009 |
|
Num Explicit Zeros
|
0 |
|
Pattern Symmetry
|
0% |
|
Numeric Symmetry
|
0% |
|
Cholesky Candidate
|
no |
|
Positive Definite
|
no |
|
Type
|
real |
| Download |
MATLAB
Rutherford Boeing
Matrix Market
|
| Notes |
Goal is to find a permutation or factorization
that places A in upper trapezoidal form, [R1 R2] where
R1 is well-conditioned, square, and upper triangular,
and where R1\R2 is as sparse as possible.
|
