Matrix: Meszaros/plddb

Description: LP sequence: pldd000b to pldd012b

Meszaros/plddb graph
(bipartite graph drawing)

Meszaros/plddb dmperm of Meszaros/plddb
scc of Meszaros/plddb

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  • Matrix group: Meszaros
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  • download as a MATLAB mat-file, file size: 385 KB. Use UFget(1822) or UFget('Meszaros/plddb') in MATLAB.
  • download in Matrix Market format, file size: 644 KB.
  • download in Rutherford/Boeing format, file size: 487 KB.

    Matrix properties
    number of rows3,069
    number of columns5,049
    structural full rank?yes
    structural rank3,069
    # of blocks from dmperm199
    # strongly connected comp.397
    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 13-by-1
    bcell 13-by-1
    ccell 13-by-1
    locell 13-by-1
    hicell 13-by-1
    z0cell 13-by-1

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

    Ordering statistics:result
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD456,555
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD20,125

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

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

    Meszaros/plddb 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.