Matrix: HB/beaflw

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

HB/beaflw graph
(bipartite graph drawing)

HB/beaflw dmperm of HB/beaflw
scc of HB/beaflw

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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: 261 KB. Use UFget(79) or UFget('HB/beaflw') in MATLAB.
  • download in Matrix Market format, file size: 267 KB.
  • download in Rutherford/Boeing format, file size: 205 KB.

    Matrix properties
    number of rows497
    number of columns507
    nonzeros53,403
    structural full rank?no
    structural rank460
    # of blocks from dmperm13
    # strongly connected comp.13
    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 COLAMD63,714
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD115,128

    SVD-based statistics:
    norm(A)219223
    min(svd(A))8.65398e-31
    cond(A)2.53321e+35
    rank(A)460
    sprank(A)-rank(A)0
    null space dimension37
    full numerical rank?no
    singular value gap6.50545e+07

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

    HB/beaflw 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.