• 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/EAT_SR
  • Description: Pajek network: Edinburgh Associative Thesaurus (stimulus-response)
  • download as a MATLAB mat-file, file size: 1006 KB. Use UFget(1462) or UFget('Pajek/EAT_SR') in MATLAB.
  • download in Matrix Market format
  • download in Rutherford/Boeing format

    Pajek/EAT_SR

    scc of Pajek/EAT_SR

    Pajek/EAT_SR graph

    Matrix properties
    number of rows23,219
    number of columns23,219
    nonzeros325,589
    structural full rank?no
    structural rank8,210
    # of blocks from dmperm2
    # strongly connected comp.15,466
    explicit zero entries0
    nonzero pattern symmetry 12%
    numeric value symmetry 3%
    typeinteger
    structureunsymmetric
    Cholesky candidate?no
    positive definite?no

    authorG. Kiss, C. Armstrong R. Milroy, J. Piper
    editorV. Batagelj
    date1971
    kinddirected weighted graph
    2D/3D problem?no

    Additional fieldssize and type
    nodenamefull 23219-by-20

    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/.                                
------------------------------------------------------------------------------
 EAT - The Edinburgh Associative Thesaurus /                                  
 stimulus-response                                                            
 --------------------------------------------------------                     
 The EAT is a database of word association norms.                             
 - Original EAT: George Kiss, Christine Armstrong,                            
 Robert Milroy and J.R.I. Piper (1968-1971).                                  
 - MRC Psycholinguistic Database Version modified by:                         
 Max Coltheart, S. James, J. Ramshaw, B.M. Philip,                            
 B. Reid, J. Benyon-Tinker and E. Doctor;                                     
 made available by: Philip Quinlan.                                           
 - The present version was re-structured and documented                       
 by Michael Wilson at the Rutherford Appleton Laboratory.                     
 http://monkey.cis.rl.ac.uk/Eat/htdocs/eat.zip                                
                                                                              
 transformed in Pajek format: V. Batagelj, 31. July 2003                      
 -----

    Ordering statistics:AMD METIS
    nnz(chol(P*(A+A'+s*I)*P'))23,400,772 28,142,883
    Cholesky flop count1.0e+11 1.4e+11
    nnz(L+U), no partial pivoting46,778,325 56,262,547
    nnz(V) for QR, upper bound nnz(L) for LU76,340 129,562
    nnz(R) for QR, upper bound nnz(U) for LU109,195,003 117,923,641

    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.