Matrix: Pajek/patents

Description: Pajek network: NBER US Patent Citations, 1963-1999, cites 1975-1999

Pajek/patents graph Pajek/patents graph
(bipartite graph drawing) (graph drawing of A+A')


Pajek/patents
scc of Pajek/patents

  • Home page of the UF Sparse Matrix Collection
  • Matrix group: Pajek
  • Click here for a description of the Pajek group.
  • Click here for a list of all matrices
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  • download as a MATLAB mat-file, file size: 59 MB. Use UFget(1514) or UFget('Pajek/patents') in MATLAB.
  • download in Matrix Market format, file size: 88 MB.
  • download in Rutherford/Boeing format, file size: 73 MB.

    Matrix properties
    number of rows3,774,768
    number of columns3,774,768
    nonzeros14,970,767
    # strongly connected comp.3,774,768
    explicit zero entries0
    nonzero pattern symmetry 0%
    numeric value symmetry 0%
    typebinary
    structureunsymmetric
    Cholesky candidate?no
    positive definite?no

    authorB. Hall, A. Jaffe, M. Tratjenberg
    editorV. Batagelj
    date2001
    kinddirected graph
    2D/3D problem?no

    Additional fieldssize and type
    appyearfull 3774768-by-1
    catfull 3774768-by-1
    classfull 3774768-by-1
    datefull 3774768-by-1
    subcatfull 3774768-by-1
    yearfull 3774768-by-1
    countryfull 3774768-by-4
    nodenamefull 3774768-by-7

    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/.                                
    ------------------------------------------------------------------------------
    Regarding conversion for UF sparse matrix collection: in the original data    
    there are 14,973,817 edges (unweighted).  Of this, 3050 are duplicates        
    This graph is binary; the duplicates have been removed.                       
    Also, the original data has auxiliary data for all 6,009,554 US Patents in the
    time period.  This patent network has only 3,774,768 patents, and the auxiliar
    data (appyear, class, etc.) is matched here to the nodes of the graph.        
    ------------------------------------------------------------------------------
    

    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.