Matrix: Meszaros/scrs8-2r

Description: LP sequence: scrs8-2r-4, 8, 16, 27, 32, 64, 64b, 96, 128, 256, 512

Meszaros/scrs8-2r graph
(bipartite graph drawing)

Meszaros/scrs8-2r dmperm of Meszaros/scrs8-2r

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  • Matrix group: Meszaros
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  • download as a MATLAB mat-file, file size: 433 KB. Use UFget(1834) or UFget('Meszaros/scrs8-2r') in MATLAB.
  • download in Matrix Market format, file size: 710 KB.
  • download in Rutherford/Boeing format, file size: 576 KB.

    Matrix properties
    number of rows14,364
    number of columns27,691
    structural full rank?yes
    structural rank14,364
    # of blocks from dmperm2,054
    # strongly connected comp.1
    explicit zero entries0
    nonzero pattern symmetry 0%
    numeric value symmetry 0%
    Cholesky candidate?no
    positive definite?no

    editorC. Meszaros
    kindlinear programming problem sequence
    2D/3D problem?no

    Additional fieldssize and type
    Acell 10-by-1
    bcell 10-by-1
    ccell 10-by-1
    locell 10-by-1
    hicell 10-by-1
    z0cell 10-by-1

    Converted to standard form via Resende and Veiga's mpsrd:
    minimize c'*x, subject to A*x=b and lo <= x <= hi        
    Determinisitic equivalent of stochastic LP               

    Ordering statistics:result
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD123,684,466
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD62,366,421

    SVD-based statistics:
    null space dimension0
    full numerical rank?yes

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

    Meszaros/scrs8-2r 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.