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.
|