Matrix: Mittelmann/pds-80

Description: Patient distribution (evacuation) system

Mittelmann/pds-80 graph
(bipartite graph drawing)

Mittelmann/pds-80 dmperm of Mittelmann/pds-80
scc of Mittelmann/pds-80

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  • download as a MATLAB mat-file, file size: 2 MB. Use UFget(1651) or UFget('Mittelmann/pds-80') in MATLAB.
  • download in Matrix Market format, file size: 4 MB.
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    Matrix properties
    number of rows129,181
    number of columns434,580
    structural full rank?no
    structural rank128,954
    # of blocks from dmperm1,546
    # strongly connected comp.228
    explicit zero entries0
    nonzero pattern symmetry 0%
    numeric value symmetry 0%
    Cholesky candidate?no
    positive definite?no

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

    Additional fieldssize and type
    bfull 129181-by-1
    cfull 434580-by-1
    lofull 434580-by-1
    hifull 434580-by-1
    z0full 1-by-1


    Hans Mittelmann test set,       
    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 COLAMD3,484,402,247
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD97,048,944

    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.