• UF Sparse Matrix Collection
  • Matrix group: Meszaros
  • Click here for a description of the Meszaros group.
  • Click here for a list of all matrices
  • Click here for a list of all matrix groups


  • Matrix: Meszaros/co9
  • Description: linear programming problem, C. Meszaros test set
  • download as a MATLAB mat-file, file size: 220 KB. Use UFget(1697) or UFget('Meszaros/co9') in MATLAB.
  • download in Matrix Market format
  • download in Rutherford/Boeing format

    Meszaros/co9

    dmperm of Meszaros/co9

    scc of Meszaros/co9

    Matrix properties
    number of rows10,789
    number of columns22,924
    nonzeros109,651
    structural full rank?yes
    structural rank10,789
    # of blocks from dmperm96
    # strongly connected comp.123
    entries not in dmperm blocks0
    explicit zero entries0
    nonzero pattern symmetry 0%
    numeric value symmetry 0%
    typereal
    structurerectangular
    Cholesky candidate?no
    positive definite?no

    author
    editorC. Meszaros
    date2004
    kindlinear programming problem
    2D/3D problem?no

    Additional fieldssize and type
    bfull 10789-by-1
    cfull 22924-by-1
    lofull 22924-by-1
    hifull 22924-by-1
    z0full 1-by-1

    Notes:

    http://www.sztaki.hu/~meszaros/public_ftp/lptestset      
    Converted to standard form via Resende and Veiga's mpsrd:
    minimize c'*x, subject to A*x=b and lo <= x <= hi        
    

    Ordering statistics:AMD METIS DMPERM+
    nnz(V) for QR, upper bound nnz(L) for LU5,800,562 4,018,672 3,704,158
    nnz(R) for QR, upper bound nnz(U) for LU487,997 496,545 484,108

    Maintained by Tim Davis, last updated 05-Mar-2008.
    Matrix pictures by cspy, a MATLAB function in the CSparse package.