vanHeukelum/cage12 graph

Matrix: vanHeukelum/cage12

Description: DNA electrophoresis, 12 monomers in polymer. A. van Heukelum, Utrecht U

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  • Matrix group: vanHeukelum
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  • download as a MATLAB mat-file, file size: 5 MB. Use UFget(913) or UFget('vanHeukelum/cage12') in MATLAB.
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    vanHeukelum/cage12

    Matrix properties
    number of rows130,228
    number of columns130,228
    nonzeros2,032,536
    structural full rank?yes
    structural rank130,228
    # of blocks from dmperm1
    # strongly connected comp.1
    entries not in dmperm blocks0
    explicit zero entries0
    nonzero pattern symmetrysymmetric
    numeric value symmetry 19%
    typereal
    structureunsymmetric
    Cholesky candidate?no
    positive definite?no

    authorA. van Heukelum
    editorT. Davis
    date2003
    kinddirected weighted graph
    2D/3D problem?no

    Ordering statistics:AMD METIS
    nnz(chol(P*(A+A'+s*I)*P'))1,445,806,647 276,634,022
    Cholesky flop count3.9e+13 1.9e+12
    nnz(L+U), no partial pivoting2.891483e+09 553,137,816
    nnz(V) for QR, upper bound nnz(L) for LU1,789,255,844 839,587,671
    nnz(R) for QR, upper bound nnz(U) for LU2.823369e+09 1,491,069,473

    Maintained by Tim Davis, last updated 30-Sep-2008.
    Matrix pictures by cspy, a MATLAB function in the CSparse package.
    Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.