Matrix: Lucifora/cell1

Description: Telecom Italia Mobile, GSM cell phone problem (cell1)

Lucifora/cell1 graph Lucifora/cell1 graph
(bipartite graph drawing) (graph drawing of A+A')


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  • Matrix group: Lucifora
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  • download as a MATLAB mat-file, file size: 95 KB. Use UFget(934) or UFget('Lucifora/cell1') in MATLAB.
  • download in Matrix Market format, file size: 147 KB.
  • download in Rutherford/Boeing format, file size: 112 KB.

    Matrix properties
    number of rows7,055
    number of columns7,055
    # strongly connected comp.1
    explicit zero entries4,773
    nonzero pattern symmetry 100%
    numeric value symmetry 0%
    Cholesky candidate?no
    positive definite?no

    authorS. Lucifora
    editorT. Davis
    kinddirected weighted graph
    2D/3D problem?no

    Additional fieldssize and type
    bfull 7055-by-1

    Note that all matrix statistics (except nonzero pattern symmetry) exclude the 4773 explicit zero entries.

    SVD-based statistics:
    null space dimension1
    full numerical rank?no
    singular value gap1.57216e+10

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

    Lucifora/cell1 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.