Matrix: Simon/appu

Description: RANDOM SPARSE MATRIX USED IN THE APP BENCHMARK, NASA AMES RESEARCH CENTE

Simon/appu graph
(undirected graph drawing)

Simon/appu

  • Home page of the UF Sparse Matrix Collection
  • Matrix group: Simon
  • Click here for a description of the Simon group.
  • Click here for a list of all matrices
  • Click here for a list of all matrix groups
  • download as a MATLAB mat-file, file size: 17 MB. Use UFget(811) or UFget('Simon/appu') in MATLAB.
  • download in Matrix Market format, file size: 20 MB.
  • download in Rutherford/Boeing format, file size: 19 MB.

    Matrix properties
    number of rows14,000
    number of columns14,000
    nonzeros1,853,104
    # strongly connected comp.1
    explicit zero entries0
    nonzero pattern symmetrysymmetric
    numeric value symmetry 94%
    typereal
    structureunsymmetric
    Cholesky candidate?no
    positive definite?no

    authorH. Simon
    editorH. Simon
    date1993
    kinddirected weighted random graph
    2D/3D problem?no

    SVD-based statistics:
    norm(A)17.1307
    min(svd(A))0.1
    cond(A)171.306
    rank(A)14,000
    null space dimension0
    full numerical rank?yes

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

    Simon/appu 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.