Matrix: Mittelmann/neos1

Description: Linear programming problem (H. Mittelmann test set)

Mittelmann/neos1 graph
(bipartite graph drawing)


Mittelmann/neos1

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  • Matrix group: Mittelmann
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  • download as a MATLAB mat-file, file size: 1 MB. Use UFget(1671) or UFget('Mittelmann/neos1') in MATLAB.
  • download in Matrix Market format, file size: 2 MB.
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    Matrix properties
    number of rows131,581
    number of columns133,473
    nonzeros599,590
    structural full rank?yes
    structural rank131,581
    # 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
    editorH. Mittelmann
    date2005
    kindlinear programming problem
    2D/3D problem?no

    Additional fieldssize and type
    bfull 131581-by-1
    cfull 133473-by-1
    lofull 133473-by-1
    hifull 133473-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           
    

    Ordering statistics:result
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD176,041,554
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD6,326,956,683

    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.