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On Constructing Small Worlds in Unstructured Peer-to-Peer Systems

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Current Trends in Database Technology - EDBT 2004 Workshops (EDBT 2004)

Part of the book series: Lecture Notes in Computer Science ((LNCS,volume 3268))

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Abstract

Peer-to-peer systems have evolved as a means to share large amounts of data among autonomous nodes. A central issue in this context is locating nodes with data matching a user query. In this paper, we consider building peer-to-peer systems with small-world properties, that is, connecting the nodes to each other so that: (i) the distance between any two nodes is small and (ii) relevant nodes are connected to each other. Relevance between nodes is defined based on the probability that the two nodes match similar queries. We propose decentralized procedures for constructing small worlds based on routing indexes that describe the content of neighboring nodes. Our experimental results show that small-world peer-to-peer systems built with these procedures increase recall, that is, the percentage of relevant results returned.

Work supported in part by the IST programme of the European Commission FET under the IST-2001-32645 DBGlobe project

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Author information

Authors and Affiliations

  1. Department of Computer Science, University of Ioannina, Greece

    Yannis Petrakis & Evaggelia Pitoura

Authors
  1. Yannis Petrakis
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  2. Evaggelia Pitoura
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Editor information

Editors and Affiliations

  1. Sidonia Systems, Grubmühl 20, D-82131, Stockdorf, Germany

    Wolfgang Lindner

  2. Università di Milano, Italy

    Marco Mesiti

  3. Functional Genomics Center Zurich (FGCZ), UZH / ETH Zurich, Winterthurerstrasse 190, CH–8057, Zurich, Switzerland

    Can Türker

  4. Computer Science Department, University of Crete, GREECE, and, Institute of Computer Science, FORTH-ICS, Greece

    Yannis Tzitzikas

  5. Aristotle University of Thessaloniki,  

    Athena I. Vakali

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© 2004 Springer-Verlag Berlin Heidelberg

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Petrakis, Y., Pitoura, E. (2004). On Constructing Small Worlds in Unstructured Peer-to-Peer Systems. In: Lindner, W., Mesiti, M., Türker, C., Tzitzikas, Y., Vakali, A.I. (eds) Current Trends in Database Technology - EDBT 2004 Workshops. EDBT 2004. Lecture Notes in Computer Science, vol 3268. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-30192-9_41

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  • DOI: https://doi.org/10.1007/978-3-540-30192-9_41

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-23305-3

  • Online ISBN: 978-3-540-30192-9

  • eBook Packages: Computer ScienceComputer Science (R0)

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