Combining the Use of Clustering and Scale-Free Nature of User Exchanges into a Simple and Efficient P2P System

  • Pierre Fraigniaud
  • Philippe Gauron
  • Matthieu Latapy
Part of the Lecture Notes in Computer Science book series (LNCS, volume 3648)


It was recently observed that the user interests in P2P systems possess clustering properties that can be used to reduce the amount of traffic of flooding-based search strategies. It was also observed that the user interests possess scale-free properties that can be used for the design of routing-based search strategies. In this paper, we show that the combination of these two properties enables the design of an efficient and simple fully decentralized search strategy. This search strategy is simple in the sense that it does not require maintaining any structured overlay network topology connecting the peers. It is efficient in the sense that simulations processed on real-world traces show that lookups perform in logarithmic expected number of steps.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2005

Authors and Affiliations

  • Pierre Fraigniaud
    • 1
  • Philippe Gauron
    • 2
  • Matthieu Latapy
    • 3
  1. 1.CNRS, LRIUniv. Paris-SudOrsayFrance
  2. 2.LRIUniv. Paris-SudOrsayFrance
  3. 3.CNRS, LIAFAUniv. Paris VIIParisFrance

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