Matrix: Gset/G38

Description: Random matrix, nodes 1..n descreasing average degree.G38=pattern of G42

Gset/G38 graph
(undirected graph drawing)

Gset/G38

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  • Matrix group: Gset
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  • download as a MATLAB mat-file, file size: 48 KB. Use UFget(500) or UFget('Gset/G38') in MATLAB.
  • download in Matrix Market format, file size: 35 KB.
  • download in Rutherford/Boeing format, file size: 27 KB.

    Matrix properties
    number of rows2,000
    number of columns2,000
    nonzeros23,558
    # strongly connected comp.1
    explicit zero entries0
    nonzero pattern symmetrysymmetric
    numeric value symmetrysymmetric
    typebinary
    structuresymmetric
    Cholesky candidate?no
    positive definite?no

    authorC. Helmberg
    editorY. Ye
    date1996
    kindduplicate undirected random graph
    2D/3D problem?no

    Notes:

    This matrix is the nonzero pattern of Gset/G42

    SVD-based statistics:
    norm(A)27.0982
    min(svd(A))0.0021626
    cond(A)12530.4
    rank(A)2,000
    null space dimension0
    full numerical rank?yes

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

    Gset/G38 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.