Matrix: Meszaros/dbic1

Description: linear programming problem, C. Meszaros test set

Meszaros/dbic1 graph
(bipartite graph drawing)


Meszaros/dbic1

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  • Matrix group: Meszaros
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  • download as a MATLAB mat-file, file size: 1 MB. Use UFget(1704) or UFget('Meszaros/dbic1') in MATLAB.
  • download in Matrix Market format, file size: 3 MB.
  • download in Rutherford/Boeing format, file size: 2 MB.

    Matrix properties
    number of rows43,200
    number of columns226,317
    nonzeros1,081,843
    structural full rank?yes
    structural rank43,200
    # of blocks from dmperm1
    # strongly connected comp.1
    explicit zero entries0
    nonzero pattern symmetry 0%
    numeric value symmetry 0%
    typeinteger
    structurerectangular
    Cholesky candidate?no
    positive definite?no

    author
    editorC. Meszaros
    date2004
    kindlinear programming problem
    2D/3D problem?no

    Additional fieldssize and type
    bfull 43200-by-1
    cfull 226317-by-1
    lofull 226317-by-1
    hifull 226317-by-1
    z0full 1-by-1

    Notes:

    http://www.sztaki.hu/~meszaros/public_ftp/lptestset      
    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 COLAMD103,181,687
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD2,715,260

    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.