Matrix: HB/beause

Description: U NONSYMMETRIC MATRIX U.S. ECONOMY 1972 -SZYLD-I.E.A.-NYU-

HB/beause graph
(bipartite graph drawing)

HB/beause dmperm of HB/beause
scc of HB/beause

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  • Matrix group: HB
  • Click here for a description of the HB group.
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  • download as a MATLAB mat-file, file size: 128 KB. Use UFget(80) or UFget('HB/beause') in MATLAB.
  • download in Matrix Market format, file size: 182 KB.
  • download in Rutherford/Boeing format, file size: 118 KB.

    Matrix properties
    number of rows497
    number of columns507
    nonzeros44,551
    structural full rank?no
    structural rank459
    # of blocks from dmperm31
    # strongly connected comp.8
    explicit zero entries0
    nonzero pattern symmetry 0%
    numeric value symmetry 0%
    typereal
    structurerectangular
    Cholesky candidate?no
    positive definite?no

    authorD. Szyld
    editorI. Duff, R. Grimes, J. Lewis
    date1982
    kindeconomic problem
    2D/3D problem?no

    Ordering statistics:result
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD58,289
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD114,301

    SVD-based statistics:
    norm(A)218448
    min(svd(A))1.29401e-30
    cond(A)1.68816e+35
    rank(A)459
    sprank(A)-rank(A)0
    null space dimension38
    full numerical rank?no
    singular value gap1.29631e+08

    singular values (MAT file):click here
    SVD method used:s = svd (full (A)) ;
    status:ok

    HB/beause svd

    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.