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Optimization Issues in Web Search Engines

In: Handbook of Optimization in Telecommunications

Author

Listed:
  • Zhen Liu

    (IBM Research)

  • Philippe Nain

    (NRIA)

Abstract

Crawlers are deployed by a Web search engine for collecting information from different Web servers in order to maintain the currency of its data base of Web pages. We present studies on the optimization of Web search engines from different perspectives. We first investigate the number of crawlers to be used by a search engine so as to maximize the currency of the data base without putting an unnecessary load on the network. Both the static setting, where crawlers are always active, and the dynamic setting where, crawlers may be activated/deactivated as a function of the state of the system, are addressed. We then consider the optimal scheduling of the visits of these crawlers to the Web pages assuming these pages are modified at different rates. Finally, we briefly discuss some other optimization issues of Web search engines, including page ranking and system optimization.

Suggested Citation

  • Zhen Liu & Philippe Nain, 2006. "Optimization Issues in Web Search Engines," Springer Books, in: Mauricio G. C. Resende & Panos M. Pardalos (ed.), Handbook of Optimization in Telecommunications, chapter 34, pages 981-1015, Springer.
    • Handle: RePEc:spr:sprchp:978-0-387-30165-5_34
    DOI: 10.1007/978-0-387-30165-5_34
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