Matrix: Kim/kim1

Description: 2D 197-by-195 complex mesh. Wonsik Kim, Korea

Kim/kim1 graph Kim/kim1 graph
(bipartite graph drawing) (graph drawing of A+A')

Kim/kim1

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  • Matrix group: Kim
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  • download as a MATLAB mat-file, file size: 952 KB. Use UFget(862) or UFget('Kim/kim1') in MATLAB.
  • download in Matrix Market format, file size: 3 MB.
  • download in Rutherford/Boeing format, file size: 998 KB.

    Matrix properties
    number of rows38,415
    number of columns38,415
    nonzeros933,195
    structural full rank?yes
    structural rank38,415
    # of blocks from dmperm1
    # strongly connected comp.1
    explicit zero entries0
    nonzero pattern symmetry 99%
    numeric value symmetry 0%
    typecomplex
    structureunsymmetric
    Cholesky candidate?no
    positive definite?no

    authorW. Kim
    editorT. Davis
    date2002
    kind2D/3D problem
    2D/3D problem?yes

    Ordering statistics:result
    nnz(chol(P*(A+A'+s*I)*P')) with AMD4,787,045
    Cholesky flop count1.3e+09
    nnz(L+U), no partial pivoting, with AMD9,535,675
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD8,414,411
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD16,436,381

    SVD-based statistics:
    norm(A)296717
    min(svd(A))30.0831
    cond(A)9863.26
    rank(A)38,415
    sprank(A)-rank(A)0
    null space dimension0
    full numerical rank?yes

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

    Kim/kim1 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.