Pajek/patents

Pajek network: NBER US Patent Citations, 1963-1999, cites 1975-1999
Name patents
Group Pajek
Matrix ID 1514
Num Rows 3,774,768
Num Cols 3,774,768
Nonzeros 14,970,767
Pattern Entries 14,970,767
Kind Directed Graph
Symmetric No
Date 2001
Author B. Hall, A. Jaffe, M. Tratjenberg
Editor V. Batagelj
Structural Rank
Structural Rank Full
Num Dmperm Blocks
Strongly Connect Components 3,774,768
Num Explicit Zeros 0
Pattern Symmetry 0%
Numeric Symmetry 0%
Cholesky Candidate no
Positive Definite no
Type binary
Download MATLAB Rutherford Boeing Matrix Market
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.        
------------------------------------------------------------------------------