Matrix: HB/dwt_198

Description: SYMMETRIC CONNECTION TABLE FROM DTNSRDC, WASHINGTON

HB/dwt_198 graph
(undirected graph drawing)

HB/dwt_198 dmperm of HB/dwt_198

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  • Matrix group: HB
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  • download as a MATLAB mat-file, file size: 2 KB. Use UFget(115) or UFget('HB/dwt_198') in MATLAB.
  • download in Matrix Market format, file size: 2 KB.
  • download in Rutherford/Boeing format, file size: 2 KB.

    Matrix properties
    number of rows198
    number of columns198
    nonzeros1,392
    structural full rank?yes
    structural rank198
    # of blocks from dmperm6
    # strongly connected comp.6
    explicit zero entries0
    nonzero pattern symmetrysymmetric
    numeric value symmetrysymmetric
    typebinary
    structuresymmetric
    Cholesky candidate?yes
    positive definite?no

    authorG. Everstine, D. Taylor
    editorI. Duff, R. Grimes, J. Lewis
    date1980
    kindstructural problem
    2D/3D problem?yes

    Ordering statistics:result
    nnz(chol(P*(A+A'+s*I)*P')) with AMD1,275
    Cholesky flop count9.5e+03
    nnz(L+U), no partial pivoting, with AMD2,352
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD1,349
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD2,340

    SVD-based statistics:
    norm(A)8.24297
    min(svd(A))6.12832e-17
    cond(A)1.34506e+17
    rank(A)192
    sprank(A)-rank(A)6
    null space dimension6
    full numerical rank?no
    singular value gap4.79739e+13

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

    HB/dwt_198 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.