• 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/FA
  • Description: Pajek network: USF Free (word) Association Norms
  • download as a MATLAB mat-file, file size: 366 KB. Use UFget(1472) or UFget('Pajek/FA') in MATLAB.
  • download in Matrix Market format
  • download in Rutherford/Boeing format

    Pajek/FA

    scc of Pajek/FA

    Pajek/FA graph

    Matrix properties
    number of rows10,617
    number of columns10,617
    nonzeros72,176
    structural full rank?no
    structural rank5,018
    # of blocks from dmperm3
    # strongly connected comp.5,764
    explicit zero entries0
    nonzero pattern symmetry 23%
    numeric value symmetry 1%
    typereal
    structureunsymmetric
    Cholesky candidate?no
    positive definite?no

    authorUSF
    editorV. Batagelj
    date2006
    kinddirected weighted graph
    2D/3D problem?no

    Additional fieldssize and type
    psfull 10617-by-1
    concretenessfull 10617-by-1
    nodenamefull 10617-by-19

    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'))3,406,543 3,856,532
    Cholesky flop count5.6e+09 5.9e+09
    nnz(L+U), no partial pivoting6,802,469 7,702,447
    nnz(V) for QR, upper bound nnz(L) for LU46,180 20,568
    nnz(R) for QR, upper bound nnz(U) for LU6,646,356 7,778,662

    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.