Andrianov/mip1 graph

Matrix: Andrianov/mip1

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

  • UF Sparse Matrix Collection
  • 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
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    Andrianov/mip1

    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
    entries not in dmperm blocks0
    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:AMD METIS
    nnz(chol(P*(A+A'+s*I)*P'))39,133,986 10,395,278
    Cholesky flop count1.1e+11 5.1e+09
    nnz(L+U), no partial pivoting78,201,509 20,724,093
    nnz(V) for QR, upper bound nnz(L) for LU349,872,562 -
    nnz(R) for QR, upper bound nnz(U) for LU2.205234e+09 -

    Maintained by Tim Davis, last updated 30-Sep-2008.
    Matrix pictures by cspy, a MATLAB function in the CSparse package.
    Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.