Matrix: LAW/webbase-2001

Description: large web crawl in 2001

LAW/webbase-2001 graph LAW/webbase-2001 graph
(bipartite graph drawing) (graph drawing of A+A')

scc of LAW/webbase-2001

  • Home page of the UF Sparse Matrix Collection
  • Matrix group: LAW
  • Click here for a description of the LAW group.
  • Click here for a list of all matrices
  • Click here for a list of all matrix groups
  • download as a MATLAB mat-file, file size: 992 MB. Use UFget(2449) or UFget('LAW/webbase-2001') in MATLAB.
  • download in Matrix Market format, file size: 2537 MB.
  • download in Rutherford/Boeing format, file size: 1235 MB.

    Matrix properties
    number of rows118,142,155
    number of columns118,142,155
    # strongly connected comp.41,126,852
    explicit zero entries0
    nonzero pattern symmetry 28%
    numeric value symmetry 28%
    Cholesky candidate?no
    positive definite?no

    authorLaboratory for Web Algorithmics (LAW), Universita degli Studi di Milano,
    editorLaboratory for Web Algorithmics (LAW), Universita degli Studi di Milano,
    kinddirected graph
    2D/3D problem?no


    Laboratory for Web Algorithmics (LAW), Universita degli Studi di Milano,  When using matrices in the LAW/ group 
    in the collection, please follow the citation instructions at         If you publish results based on    
    these graphs, please acknowledge the usage of WebGraph and LLP by quoting
    the following papers:                                                    
    [1] "The WebGraph Framework I: Compression Techniques," Paolo Boldi      
        and Sebastiano Vigna, Proc. of the Thirteenth International          
        World Wide Web Conference (WWW 2004), 2004, Manhattan, USA,          
        pp. 595--601, ACM Press.                                             
    [2] "Layered Label Propagation: A MultiResolution Coordinate-Free        
        Ordering for Compressing Social Networks," Paolo Boldi, Marco        
        Rosa, Massimo Santini, and Sebastiano Vigna, Proceedings of the      
        20th international conference on World Wide Web, 2011, ACM Press.    
    If the graphs you are using were gathered by UbiCrawler, please          
    acknowledge the usage of UbiCrawler by quoting the following paper:      
    [3] "UbiCrawler: A Scalable Fully Distributed Web Crawler",              
        Paolo Boldi, Bruno Codenotti, Massimo Santini, and Sebastiano        
        Vigna, Software: Practice & Experience, 2004, vol 34, no. 8,         
        pp. 711--726                                                         
    This graph has been obtained from the 2001 crawl performed by the        
    WebBase crawler. The data provided by WebBase has been filtered to       
    eliminate invalid links and to normalise URLs. The experiments           
    reported in reports "The WebGraph Framework I: Compression               
    Techniques" and "Codes for the World-Wide Web", (both at             ) are based on this graph and on                 
    uk-2002. Note that for historical reasons the URLs of this               
    graph are coded in ISO-8859-1.                                           
    For additional graph properties and statistics, including node labels,   

    For a description of the statistics displayed above, click here.

    Maintained by Tim Davis, last updated 09-Mar-2015.
    Matrix pictures by cspy, a MATLAB function in the CSparse package.
    Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.