• 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/foldoc
  • Description: Pajek network: free on-line dictionary of computing
  • download as a MATLAB mat-file, file size: 358 KB. Use UFget(1473) or UFget('Pajek/foldoc') in MATLAB.
  • download in Matrix Market format
  • download in Rutherford/Boeing format

    Pajek/foldoc

    scc of Pajek/foldoc

    Pajek/foldoc graph

    Matrix properties
    number of rows13,356
    number of columns13,356
    nonzeros120,238
    structural full rank?no
    structural rank13,239
    # of blocks from dmperm244
    # strongly connected comp.71
    explicit zero entries0
    nonzero pattern symmetry 48%
    numeric value symmetry 46%
    typeinteger
    structureunsymmetric
    Cholesky candidate?no
    positive definite?no

    authorD. Howe
    editorV. Batagelj, A. Mrvar
    date2002
    kinddirected weighted graph
    2D/3D problem?no

    Additional fieldssize and type
    nodenamefull 13356-by-67

    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'))11,671,815 11,321,651
    Cholesky flop count3.4e+10 3.0e+10
    nnz(L+U), no partial pivoting23,330,274 22,629,946
    nnz(V) for QR, upper bound nnz(L) for LU17,102,223 13,263,950
    nnz(R) for QR, upper bound nnz(U) for LU19,585,234 17,728,323

    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.