Matrix: Pajek/GD01_a

Description: Pajek network: Graph Drawing contest 2000

 (bipartite graph drawing) (graph drawing of A+A')

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• download as a MATLAB mat-file, file size: 7 KB. Use UFget(1477) or UFget('Pajek/GD01_a') in MATLAB.
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 Matrix properties number of rows 311 number of columns 311 nonzeros 645 # strongly connected comp. 303 explicit zero entries 0 nonzero pattern symmetry 2% numeric value symmetry 2% type integer structure unsymmetric Cholesky candidate? no positive definite? no

 author Graph Drawing Contest editor V. Batagelj date 2001 kind directed weighted graph 2D/3D problem? no

 Additional fields size and type nodename full 311-by-38 coord full 311-by-2

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,
------------------------------------------------------------------------------
The original problem had 3D xyz coordinates, but all values of z were equal
to 0.5, and have been removed.  This graph has 2D coordinates.
```

 SVD-based statistics: norm(A) 6.40144 min(svd(A)) 0 cond(A) Inf rank(A) 155 null space dimension 156 full numerical rank? no singular value gap 4.93922e+13

 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.