Meszaros/cr42 graph

Matrix: Meszaros/cr42

Description: linear programming problem, C. Meszaros test set


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  • Matrix group: Meszaros
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  • download as a MATLAB mat-file, file size: 49 KB. Use UFget(1701) or UFget('Meszaros/cr42') in MATLAB.
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    Meszaros/cr42

    dmperm of Meszaros/cr42

    Matrix properties
    number of rows905
    number of columns1,513
    nonzeros6,614
    structural full rank?yes
    structural rank905
    # of blocks from dmperm2
    # strongly connected comp.1
    entries not in dmperm blocks300
    explicit zero entries0
    nonzero pattern symmetry 0%
    numeric value symmetry 0%
    typereal
    structurerectangular
    Cholesky candidate?no
    positive definite?no

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

    Additional fieldssize and type
    bfull 905-by-1
    cfull 1513-by-1
    lofull 1513-by-1
    hifull 1513-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:AMD METIS DMPERM+
    nnz(V) for QR, upper bound nnz(L) for LU404,197 526,944 340,631
    nnz(R) for QR, upper bound nnz(U) for LU309,264 329,783 303,579

    Maintained by Tim Davis, last updated 05-Nov-2008.
    Matrix pictures by cspy, a MATLAB function in the CSparse package.
    Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.