Matrix: Mittelmann/pds-90

Description: Patient distribution (evacuation) system

Mittelmann/pds-90 graph
(bipartite graph drawing)


Mittelmann/pds-90 dmperm of Mittelmann/pds-90
scc of Mittelmann/pds-90

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  • download as a MATLAB mat-file, file size: 2 MB. Use UFget(1652) or UFget('Mittelmann/pds-90') in MATLAB.
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    Matrix properties
    number of rows142,823
    number of columns475,448
    nonzeros1,014,136
    structural full rank?no
    structural rank142,596
    # of blocks from dmperm1,546
    # strongly connected comp.228
    explicit zero entries0
    nonzero pattern symmetry 0%
    numeric value symmetry 0%
    typeinteger
    structurerectangular
    Cholesky candidate?no
    positive definite?no

    authorW. Carolan, J. Hill, J. Kennington, S. Niemi, S. Wichmann
    editorH. Mittelmann
    date1990
    kindlinear programming problem
    2D/3D problem?no

    Additional fieldssize and type
    bfull 142823-by-1
    cfull 475448-by-1
    lofull 475448-by-1
    hifull 475448-by-1
    z0full 1-by-1

    Notes:

    Hans Mittelmann test set, http://plato.asu.edu/ftp/lptestset       
    minimize c'*x, subject to A*x=b and lo <= x <= hi                  
                                                                       
    PDS:  Patient distribution (evacuation) system. see                
    W. Carolan, J. Hill, J. Kennington, S. Niemi, and S. Wichmann, "An 
    Empirical Evaluation of the KORBX Algorithms for Military Airlift,"
    Applications, Operations Research, 38, (1990), 240-248.            
    

    Ordering statistics:result
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD4,190,656,552
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD112,938,005

    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.