Matrix: Kemelmacher/Kemelmacher

Description: Computer vision problem. Ira Kemelmacher, Weizmann Inst., Israel

Kemelmacher/Kemelmacher graph
(bipartite graph drawing)


Kemelmacher/Kemelmacher

  • Home page of the UF Sparse Matrix Collection
  • Matrix group: Kemelmacher
  • Click here for a description of the Kemelmacher 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: 747 KB. Use UFget(1329) or UFget('Kemelmacher/Kemelmacher') in MATLAB.
  • download in Matrix Market format, file size: 1 MB.
  • download in Rutherford/Boeing format, file size: 833 KB.

    Matrix properties
    number of rows28,452
    number of columns9,693
    nonzeros100,875
    structural full rank?yes
    structural rank9,693
    # of blocks from dmperm1
    # strongly connected comp.1
    explicit zero entries0
    nonzero pattern symmetry 0%
    numeric value symmetry 0%
    typereal
    structurerectangular
    Cholesky candidate?no
    positive definite?no

    authorI. Kemelmacher
    editorT. Davis
    date2005
    kindcomputer graphics/vision problem
    2D/3D problem?yes

    Ordering statistics:result
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD14,353,815
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD857,817

    SVD-based statistics:
    norm(A)240.578
    min(svd(A))0.0100982
    cond(A)23823.9
    rank(A)9,693
    sprank(A)-rank(A)0
    null space dimension0
    full numerical rank?yes

    singular values (MAT file):click here
    SVD method used:s = svd (full (R)) ; where [~,R,E] = spqr (A) with droptol of zero
    status:ok

    Kemelmacher/Kemelmacher 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.