Matrix: JGD_Relat/rel8

Description: Relations from Florent Hiver, Univ. Paris-Est Marne-La-Valle'e

JGD_Relat/rel8 graph
(bipartite graph drawing)

JGD_Relat/rel8 dmperm of JGD_Relat/rel8
scc of JGD_Relat/rel8

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  • Matrix group: JGD_Relat
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  • download as a MATLAB mat-file, file size: 2 MB. Use UFget(2177) or UFget('JGD_Relat/rel8') in MATLAB.
  • download in Matrix Market format, file size: 2 MB.
  • download in Rutherford/Boeing format, file size: 2 MB.

    Matrix properties
    number of rows345,688
    number of columns12,347
    structural full rank?no
    structural rank12,345
    # of blocks from dmperm2
    # strongly connected comp.139,651
    explicit zero entries0
    nonzero pattern symmetry 0%
    numeric value symmetry 0%
    Cholesky candidate?no
    positive definite?no

    authorF. Hiver
    editorJ.-G. Dumas
    kindcombinatorial problem
    2D/3D problem?no


    Relations from Florent Hiver, Univ. Paris-Est Marne-La-Valle'e
    From Jean-Guillaume Dumas' Sparse Integer Matrix Collection,     
    Filename in JGD collection: Relat/rel8.mat                    

    Ordering statistics:result
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD1,802,384,177
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD57,299,673

    SVD-based statistics:
    null space dimension58
    full numerical rank?no
    singular value gap7.8864e+12

    singular values (MAT file):click here
    SVD method used:s = svd (full (R)) ; where [~,R,E] = spqr (A) with droptol of zero

    JGD_Relat/rel8 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.