Matrix: Andrianov/mip1

Description: mip1 matrix from Alexander Andrianov, SAS Institute Inc.

Andrianov/mip1 graph
(undirected graph drawing)

Andrianov/mip1

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  • Matrix group: Andrianov
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  • download as a MATLAB mat-file, file size: 5 MB. Use UFget(1385) or UFget('Andrianov/mip1') in MATLAB.
  • download in Matrix Market format, file size: 10 MB.
  • download in Rutherford/Boeing format, file size: 2 MB.

    Matrix properties
    number of rows66,463
    number of columns66,463
    nonzeros10,352,819
    structural full rank?yes
    structural rank66,463
    # of blocks from dmperm1
    # strongly connected comp.1
    explicit zero entries0
    nonzero pattern symmetrysymmetric
    numeric value symmetrysymmetric
    typebinary
    structuresymmetric
    Cholesky candidate?yes
    positive definite?no

    authorA. Andrianov
    editorT. Davis
    date2006
    kindoptimization problem
    2D/3D problem?no

    Ordering statistics:result
    nnz(chol(P*(A+A'+s*I)*P')) with AMD39,133,986
    Cholesky flop count1.1e+11
    nnz(L+U), no partial pivoting, with AMD78,201,509
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD884,285,578
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD2,207,945,267

    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.