Matrix: Qaplib/lp_nug30

Description: Netlib LP problem nug30: minimize c'*x, where Ax=b, lo<=x<=hi

Qaplib/lp_nug30 graph
(bipartite graph drawing)


Qaplib/lp_nug30

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  • Matrix group: Qaplib
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  • download as a MATLAB mat-file, file size: 3 MB. Use UFget(800) or UFget('Qaplib/lp_nug30') in MATLAB.
  • download in Matrix Market format, file size: 6 MB.
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    Matrix properties
    number of rows52,260
    number of columns379,350
    nonzeros1,567,800
    structural full rank?yes
    structural rank52,260
    # 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

    authorM. Resende
    editorM. Resende
    date1995
    kindlinear programming problem
    2D/3D problem?no

    Additional fieldssize and type
    bfull 52260-by-1
    cfull 379350-by-1
    lofull 379350-by-1
    hifull 379350-by-1
    z0full 1-by-1

    Ordering statistics:result
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD13,054,845,440
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD750,645,329

    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.