| Matrix properties | |
| number of rows | 683,446 |
| number of columns | 683,446 |
| nonzeros | 7,583,376 |
| structural full rank? | no |
| structural rank | 424,014 |
| # of blocks from dmperm | 72,298 |
| # strongly connected comp. | 109,238 |
| explicit zero entries | 0 |
| nonzero pattern symmetry | 25% |
| numeric value symmetry | 25% |
| type | binary |
| structure | unsymmetric |
| Cholesky candidate? | no |
| positive definite? | no |
| author | S. Kamvar |
| editor | T. Davis |
| date | 2003 |
| kind | directed graph |
| 2D/3D problem? | no |
| Additional fields | size and type |
| roots | full 466-by-1 |
| rootname | full 466-by-39 |
| Ordering statistics: | AMD | METIS |
| nnz(chol(P*(A+A'+s*I)*P')) | 29,131,603 | 21,705,442 |
| Cholesky flop count | 3.0e+10 | 1.2e+10 |
| nnz(L+U), no partial pivoting | 57,579,760 | 42,727,438 |
| nnz(V) for QR, upper bound nnz(L) for LU | 3.596796e+09 | - |
| nnz(R) for QR, upper bound nnz(U) for LU | 7.818075e+09 | - |
Maintained by Tim Davis, last updated 04-May-2008.
Matrix pictures by cspy, a MATLAB function in the CSparse package.
Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.