| Matrix properties | |
| number of rows | 5,822 |
| number of columns | 5,822 |
| nonzeros | 14,750 |
| structural full rank? | no |
| structural rank | 908 |
| # of blocks from dmperm | 50 |
| # strongly connected comp. | 877 |
| explicit zero entries | 0 |
| nonzero pattern symmetry | symmetric |
| numeric value symmetry | symmetric |
| type | binary |
| structure | symmetric |
| Cholesky candidate? | yes |
| positive definite? | no |
| author | J. Grossman, P. Iain, R. Castro |
| editor | V. Batagelj |
| date | 2006 |
| kind | undirected graph |
| 2D/3D problem? | no |
| Additional fields | size and type |
| cluster | full 5822-by-1 |
| nodename | full 5822-by-40 |
Notes:
------------------------------------------------------------------------------ Pajek network converted to sparse adjacency matrix for inclusion in UF sparse matrix collection, Tim Davis. For Pajek datasets, See V. Batagelj & A. Mrvar, http://vlado.fmf.uni-lj.si/pub/networks/data/. ------------------------------------------------------------------------------
| Ordering statistics: | AMD | METIS |
| nnz(chol(P*(A+A'+s*I)*P')) | 28,633 | 41,466 |
| Cholesky flop count | 1.5e+06 | 3.8e+06 |
| nnz(L+U), no partial pivoting | 51,444 | 77,110 |
| nnz(V) for QR, upper bound nnz(L) for LU | 1,512,842 | 1,478,160 |
| nnz(R) for QR, upper bound nnz(U) for LU | 367,698 | 422,126 |
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.