Matrix: LAW/uk-2005

Description: 2005 crawl of .uk domain

LAW/uk-2005 graph LAW/uk-2005 graph
(bipartite graph drawing) (graph drawing of A+A')

scc of LAW/uk-2005

  • 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: 666 MB. Use UFget(2455) or UFget('LAW/uk-2005') in MATLAB.
  • download in Matrix Market format, file size: 2229 MB.
  • download in Rutherford/Boeing format, file size: 846 MB.

    Matrix properties
    number of rows39,459,925
    number of columns39,459,925
    # strongly connected comp.5,811,041
    explicit zero entries0
    nonzero pattern symmetry 30%
    numeric value symmetry 30%
    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 a 2005 crawl of the .uk                
    domain performed by UbiCrawler. The crawl was very shallow,              
    and aimed at gathering a large number of hosts, but a small              
    number of pages from each host. Note that before April 2006              
    the URL order was not exactly lexicographical due to some                
    locale issues (the graph was anyway correct). The current                
    dataset has been correctly permuted so that URLs are ordered             
    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.