Matrix: Gleich/wb-cs-stanford
Description: Stanford CS web, A(i,j)=1 if page i links to page j (2001)
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| (bipartite graph drawing) | (graph drawing of A+A') |
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| Matrix properties | |
| number of rows | 9,914 |
| number of columns | 9,914 |
| nonzeros | 36,854 |
| # strongly connected comp. | 4,391 |
| explicit zero entries | 0 |
| nonzero pattern symmetry | 46% |
| numeric value symmetry | 46% |
| type | binary |
| structure | unsymmetric |
| Cholesky candidate? | no |
| positive definite? | no |
| author | D. Gleich |
| editor | T. Davis |
| date | 2001 |
| kind | directed graph |
| 2D/3D problem? | no |
Notes:
For nodenames, see http://www.cise.ufl.edu/research/sparse/aux/Gleich This graph is a subset of Gleich/wb-edu, with *.cs.stanford.edu only.
| SVD-based statistics: | |
| norm(A) | 38.3766 |
| min(svd(A)) | 0 |
| cond(A) | Inf |
| rank(A) | 5,475 |
| null space dimension | 4,439 |
| full numerical rank? | no |
| singular value gap | 9.61204e+09 |
| singular values (MAT file): | click here |
| SVD method used: | s = svd (full (A)) ; |
| status: | ok |
For a description of the statistics displayed above, click here.
Maintained by Tim Davis, last updated 12-Mar-2014.
Matrix pictures by cspy, a MATLAB function in the CSparse package.
Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.