Matrix: HB/ibm32

Description: UNSYMMETRIC PATTERN ON LEAFLET ADVERTISING IBM 1971 CONFERENCE

HB/ibm32 graph HB/ibm32 graph
(bipartite graph drawing) (graph drawing of A+A')

HB/ibm32

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  • Matrix group: HB
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  • download as a MATLAB mat-file, file size: 702 bytes. Use UFget(168) or UFget('HB/ibm32') in MATLAB.
  • download in Matrix Market format, file size: 718 bytes.
  • download in Rutherford/Boeing format, file size: 717 bytes.

    Matrix properties
    number of rows32
    number of columns32
    nonzeros126
    # strongly connected comp.1
    explicit zero entries0
    nonzero pattern symmetry 9%
    numeric value symmetry 9%
    typebinary
    structureunsymmetric
    Cholesky candidate?no
    positive definite?no

    authorIBM
    editorA. Curtis, I. Duff, J. Reid
    date1971
    kinddirected graph
    2D/3D problem?no

    SVD-based statistics:
    norm(A)4.59361
    min(svd(A))0.0113671
    cond(A)404.115
    rank(A)32
    null space dimension0
    full numerical rank?yes

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

    HB/ibm32 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.