Matrix: Pajek/Tina_AskCal
Description: Pajek network: student govt, Univ. Ljubljana, 1992 (ask opin., recall)
| Matrix properties | |
| number of rows | 11 |
| number of columns | 11 |
| nonzeros | 29 |
| structural full rank? | no |
| structural rank | 9 |
| # of blocks from dmperm | 2 |
| # strongly connected comp. | 4 |
| explicit zero entries | 0 |
| nonzero pattern symmetry | 28% |
| numeric value symmetry | 28% |
| type | binary |
| structure | unsymmetric |
| Cholesky candidate? | no |
| positive definite? | no |
| author | V. Batagelj |
| editor | V. Batagelj |
| date | 1992 |
| kind | directed graph |
| 2D/3D problem? | no |
| Additional fields | size and type |
| nodename | full 11-by-10 |
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/. ------------------------------------------------------------------------------ STUDENT GOVERNMENT OF UNIVERSITY OF LJUBLJANA (Hlebec 1992) asking for an opinion, recall
| Ordering statistics: | AMD | METIS |
| nnz(chol(P*(A+A'+s*I)*P')) | 40 | 44 |
| Cholesky flop count | 1.6e+02 | 2.0e+02 |
| nnz(L+U), no partial pivoting | 69 | 77 |
| nnz(V) for QR, upper bound nnz(L) for LU | 18 | 22 |
| nnz(R) for QR, upper bound nnz(U) for LU | 35 | 38 |
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.