Matrix: vanHeukelum/cage7
Description: DNA electrophoresis, 7 monomers in polymer. A. van Heukelum, Utrecht U.
| Matrix properties | |
| number of rows | 340 |
| number of columns | 340 |
| nonzeros | 3,084 |
| structural full rank? | yes |
| structural rank | 340 |
| # of blocks from dmperm | 1 |
| # strongly connected comp. | 1 |
| entries not in dmperm blocks | 0 |
| explicit zero entries | 0 |
| nonzero pattern symmetry | symmetric |
| numeric value symmetry | 10% |
| type | real |
| structure | unsymmetric |
| Cholesky candidate? | no |
| positive definite? | no |
| author | A. van Heukelum |
| editor | T. Davis |
| date | 2003 |
| kind | directed weighted graph |
| 2D/3D problem? | no |
| Ordering statistics: | AMD | METIS |
| nnz(chol(P*(A+A'+s*I)*P')) | 7,058 | 7,192 |
| Cholesky flop count | 2.5e+05 | 2.5e+05 |
| nnz(L+U), no partial pivoting | 13,776 | 14,044 |
| nnz(V) for QR, upper bound nnz(L) for LU | 12,323 | 12,393 |
| nnz(R) for QR, upper bound nnz(U) for LU | 21,397 | 22,200 |
Maintained by Tim Davis, last updated 30-Sep-2008.
Matrix pictures by cspy, a MATLAB function in the CSparse package.
Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.