Matrix: Newman/polblogs

Description: Political blogosphere Feb. 2005

Newman/polblogs graph Newman/polblogs graph
(bipartite graph drawing) (graph drawing of A+A')

scc of Newman/polblogs

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  • Matrix group: Newman
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  • download as a MATLAB mat-file, file size: 67 KB. Use UFget(2402) or UFget('Newman/polblogs') in MATLAB.
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    Matrix properties
    number of rows1,490
    number of columns1,490
    # strongly connected comp.688
    explicit zero entries0
    nonzero pattern symmetry 24%
    numeric value symmetry 24%
    Cholesky candidate?no
    positive definite?no

    authorL. Adamic, N. Glance
    editorM. Newman
    kinddirected multigraph
    2D/3D problem?no

    Additional fieldssize and type
    nodenamefull 1490-by-80
    nodevaluefull 1490-by-1
    nodesourcefull 1490-by-62


    Network collection from M. Newman                                                                    
    Political blogosphere Feb. 2005                                            
    Data compiled by Lada Adamic and Natalie Glance                            
    Node "value" attributes indicate political leaning according to:           
      0 (left or liberal)                                                      
      1 (right or conservative)                                                
    Data on political leaning comes from blog directories as indicated.  Some  
    blogs were labeled manually, based on incoming and outgoing links and posts
    around the time of the 2004 presidential election.  Directory-derived      
    labels are prone to error; manual labels even more so.                     
    Links between blogs were automatically extracted from a crawl of the front 
    page of the blog.                                                          
    These data should be cited as Lada A. Adamic and Natalie Glance, "The      
    political blogosphere and the 2004 US Election", in Proceedings of the     
    WWW-2005 Workshop on the Weblogging Ecosystem (2005).                      

    SVD-based statistics:
    null space dimension706
    full numerical rank?no
    singular value gap1.33878e+12

    singular values (MAT file):click here
    SVD method used:s = svd (full (A)) ;

    Newman/polblogs svd

    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.