Matrix: Pajek/geom

Description: Pajek network: collaboration in computational geometry

Pajek/geom graph
(undirected graph drawing)


Pajek/geom
scc of Pajek/geom

  • Home page of the UF Sparse Matrix Collection
  • Matrix group: Pajek
  • Click here for a description of the Pajek group.
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  • download as a MATLAB mat-file, file size: 135 KB. Use UFget(1500) or UFget('Pajek/geom') in MATLAB.
  • download in Matrix Market format, file size: 94 KB.
  • download in Rutherford/Boeing format, file size: 86 KB.

    Matrix properties
    number of rows7,343
    number of columns7,343
    nonzeros23,796
    # strongly connected comp.2,060
    explicit zero entries0
    nonzero pattern symmetrysymmetric
    numeric value symmetrysymmetric
    typeinteger
    structuresymmetric
    Cholesky candidate?no
    positive definite?no

    authorEdelsbrunner, van Leeuwen, Guibas, Stolfi
    editorV. Batagelj
    date2002
    kindundirected weighted graph
    2D/3D problem?no

    Additional fieldssize and type
    nodenamefull 7343-by-31

    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/.                                
    ------------------------------------------------------------------------------
    

    SVD-based statistics:
    norm(A)204.482
    min(svd(A))2.49988e-57
    cond(A)8.17967e+58
    rank(A)5,499
    null space dimension1,844
    full numerical rank?no
    singular value gap6.33794e+09

    singular values (MAT file):click here
    SVD method used:s = svd (full (A)) ;
    status:ok

    Pajek/geom svd

    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.