Matrix: HB/dwt_193

Description: SYMMETRIC CONNECTION TABLE FROM DTNSRDC, WASHINGTON

HB/dwt_193 graph
(undirected graph drawing)


HB/dwt_193

  • Home page of the UF Sparse Matrix Collection
  • Matrix group: HB
  • Click here for a description of the HB group.
  • Click here for a list of all matrices
  • Click here for a list of all matrix groups
  • download as a MATLAB mat-file, file size: 3 KB. Use UFget(114) or UFget('HB/dwt_193') in MATLAB.
  • download in Matrix Market format, file size: 4 KB.
  • download in Rutherford/Boeing format, file size: 3 KB.

    Matrix properties
    number of rows193
    number of columns193
    nonzeros3,493
    structural full rank?yes
    structural rank193
    # 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

    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 AMD4,382
    Cholesky flop count1.2e+05
    nnz(L+U), no partial pivoting, with AMD8,571
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD4,861
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD9,192

    SVD-based statistics:
    norm(A)21.1047
    min(svd(A))1.18136e-31
    cond(A)1.78648e+32
    rank(A)136
    sprank(A)-rank(A)57
    null space dimension57
    full numerical rank?no
    singular value gap4.42269e+13

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

    HB/dwt_193 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.