Encyclopedia of Database Systems

2018 Edition
| Editors: Ling Liu, M. Tamer Özsu

Peer-to-Peer Web Search

  • Gerhard WeikumEmail author
Reference work entry
DOI: https://doi.org/10.1007/978-1-4614-8265-9_264


The peer-to-peer (P2P) computing paradigm is an intriguing alternative to centralized search engines for querying and ranking Web content. In a P2P network with many thousands or millions of computers, every peer can have locally compiled content such as recently visited or thematically gathered Web pages, and can employ its own, potentially personalized search engine on the locally indexed data. In addition, queries can be forwarded to judiciously chosen other peers for collaborative evaluation. Such P2P architectures enable keyword search and result ranking on the network-wide global content. Thus, all peers together form a P2P search engine. Conversely, such P2P architectures could be utilized for scalable, distributed implementations of Web indexing with appropriate partitioning across the nodes of a large server farm.

Historical Background

Peer-to-peer (P2P) systemsaim to provide scalable and self-organizing ways of loosely coupling thousands or millions of computers...

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department 5: Databases and Information SystemsMax-Planck-Institut für InformatikSaarbrückenGermany

Section editors and affiliations

  • Cong Yu
    • 1
  1. 1.Google ResearchNew YorkUSA