• UF Sparse Matrix Collection
  • Matrix group: Pajek
  • Click here for a description of the Pajek group.
  • Click here for a list of all matrices
  • Click here for a list of all matrix groups

  • Matrix: Pajek/dictionary28
  • Description: Pajek network: dictionary
  • download as a MATLAB mat-file, file size: 530 KB. Use UFget(1459) or UFget('Pajek/dictionary28') in MATLAB.
  • download in Matrix Market format
  • download in Rutherford/Boeing format

    Pajek/dictionary28

    scc of Pajek/dictionary28

    Pajek/dictionary28 graph

    Matrix properties
    number of rows52,652
    number of columns52,652
    nonzeros178,076
    structural full rank?no
    structural rank38,108
    # of blocks from dmperm15,276
    # strongly connected comp.17,903
    explicit zero entries0
    nonzero pattern symmetrysymmetric
    numeric value symmetrysymmetric
    typebinary
    structuresymmetric
    Cholesky candidate?yes
    positive definite?no

    author
    editorV. Batagelj
    date2006
    kindundirected graph
    2D/3D problem?no

    Additional fieldssize and type
    nodenamefull 52652-by-8

    Notes:

    ------------------------------------------------------------------------------
Pajek network converted to sparse adjacency matrix for inclusion in UF sparse 
matrix collection, Tim Davis.  For Pajek datasets, See V. Batagelj & A. Mrvar,
http://vlado.fmf.uni-lj.si/pub/networks/data/.                                
------------------------------------------------------------------------------

    Ordering statistics:AMD METIS
    nnz(chol(P*(A+A'+s*I)*P'))6,352,200 4,160,128
    Cholesky flop count1.2e+10 4.0e+09
    nnz(L+U), no partial pivoting12,651,748 8,267,604
    nnz(V) for QR, upper bound nnz(L) for LU19,591,555 10,292,717
    nnz(R) for QR, upper bound nnz(U) for LU27,817,185 18,887,990

    Maintained by Tim Davis, last updated 04-May-2008.
    Matrix pictures by cspy, a MATLAB function in the CSparse package.
    Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.