Matrix: Mittelmann/cont1_l

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

Mittelmann/cont1_l graph
(bipartite graph drawing)


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  • Matrix group: Mittelmann
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  • download as a MATLAB mat-file, file size: 20 MB. Use UFget(1664) or UFget('Mittelmann/cont1_l') in MATLAB.
  • download in Matrix Market format, file size: 26 MB.
  • download in Rutherford/Boeing format, file size: 22 MB.

    Matrix properties
    number of rows1,918,399
    number of columns1,921,596
    structural full rank?yes
    structural rank1,918,399
    # of blocks from dmperm1
    # strongly connected comp.1
    explicit zero entries0
    nonzero pattern symmetry 0%
    numeric value symmetry 0%
    Cholesky candidate?no
    positive definite?no

    editorH. Mittelmann
    kindlinear programming problem
    2D/3D problem?no

    Additional fieldssize and type
    bfull 1918399-by-1
    cfull 1921596-by-1
    lofull 1921596-by-1
    hifull 1921596-by-1
    z0full 1-by-1


    Hans Mittelmann test set,
    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 COLAMD617,456,386,286
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD1433585661480

    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.