Matrix: Pajek/Ragusa16
Description: Pajek network: Ragusa set
| Matrix properties | |
| number of rows | 24 |
| number of columns | 24 |
| nonzeros | 81 |
| structural full rank? | no |
| structural rank | 18 |
| # of blocks from dmperm | 6 |
| # strongly connected comp. | 10 |
| explicit zero entries | 0 |
| nonzero pattern symmetry | 37% |
| numeric value symmetry | 20% |
| type | integer |
| structure | unsymmetric |
| Cholesky candidate? | no |
| positive definite? | no |
| author | V. Batagelj |
| editor | V. Batagelj |
| date | 2006 |
| kind | directed weighted graph |
| 2D/3D problem? | no |
| Additional fields | size and type |
| nodename | full 24-by-9 |
| coord | full 24-by-3 |
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')) | 95 | 96 |
| Cholesky flop count | 4.7e+02 | 4.7e+02 |
| nnz(L+U), no partial pivoting | 166 | 168 |
| nnz(V) for QR, upper bound nnz(L) for LU | 64 | 45 |
| nnz(R) for QR, upper bound nnz(U) for LU | 144 | 145 |
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.