Efficient Compression of Web Graphs

  • Authors:
  • Yasuhito Asano;Yuya Miyawaki;Takao Nishizeki

  • Affiliations:
  • Graduate School Informatics, Kyoto University, Yoshidahonmachi,Sakyo-ku, Kyoto, Japan 606-8051;Graduate School of Information Sciences, Tohoku University, Aramaki, Aoba-ku, Japan 980-8579;Graduate School of Information Sciences, Tohoku University, Aramaki, Aoba-ku, Japan 980-8579

  • Venue:
  • COCOON '08 Proceedings of the 14th annual international conference on Computing and Combinatorics
  • Year:
  • 2008

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Abstract

Several methods have been proposed for compressing the linkage data of a Web graph. Among them, the method proposed by Boldi and Vigna is known as the most efficient one. In the paper, we propose a new method to compress a Web graph. Our method is more efficient than theirs with respect to the size of the compressed data. For example, our method needs only 1.99 bits per link to compress a Web graph containing 3,216,152 links connecting 325,557 pages, while the method of Boldi and Vigna needs 2.84 bits per link to compress the same Web graph.