| Matrix properties | |
| number of rows | 582 |
| number of columns | 56,097 |
| nonzeros | 402,290 |
| structural full rank? | yes |
| structural rank | 582 |
| # of blocks from dmperm | 1 |
| # strongly connected comp. | 1 |
| entries not in dmperm blocks | 0 |
| explicit zero entries | 0 |
| nonzero pattern symmetry | 0% |
| numeric value symmetry | 0% |
| type | integer |
| structure | rectangular |
| Cholesky candidate? | no |
| positive definite? | no |
| author | P. Nobili |
| editor | J. Beasley |
| date | 2005 |
| kind | linear programming problem |
| 2D/3D problem? | no |
| Additional fields | size and type |
| b | full 582-by-1 |
| c | full 56097-by-1 |
| lo | full 56097-by-1 |
| hi | full 56097-by-1 |
| z0 | full 1-by-1 |
Notes:
Hans Mittelmann test set, http://plato.asu.edu/ftp/lptestset
minimize c'*x, subject to A*x=b and lo <= x <= hi
RAIL: set covering problems from the Italian railroad, see
http://people.brunel.ac.uk/~mastjjb/jeb/orlib/scpinfo.html
| Ordering statistics: | AMD | METIS |
| nnz(V) for QR, upper bound nnz(L) for LU | 14,837,652 | 16,679,966 |
| nnz(R) for QR, upper bound nnz(U) for LU | 98,409 | 93,763 |
Maintained by Tim Davis, last updated 05-Mar-2008.
Matrix pictures by cspy, a MATLAB function in the CSparse package.