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How old is the Web? Characterizing the age and the currency of the European scientific Web

Author

Listed:
  • José Luis Ortega

    (IEDCYT-CSIC)

  • Viv Cothey

    (University of Wolverhampton)

  • Isidro F. Aguillo

    (IEDCYT-CSIC)

Abstract

The aim of this paper is to model and study the age of the Web using a sample of about four million of web pages from the 16 European Research Area countries obtained during 2004 and 2005. Web page time-stamp (date when the web pages were created or last changed for last time), format and size in bytes data have been analysed. Several indicators are introduced to measure longitudinal aspects of the Web. Half-age is proposed as a measure of the age distribution because this is found to be exponential. “Web Update Index” and “Lifespan Index” are introduced to measure the changing rate of a small sample over time. Results show that the British Web space has the youngest Web pages while the Greek and Belgian ones have the oldest. The study also compared Web pages topics and found that Biology pages are more stable than Physics pages.

Suggested Citation

  • José Luis Ortega & Viv Cothey & Isidro F. Aguillo, 2009. "How old is the Web? Characterizing the age and the currency of the European scientific Web," Scientometrics, Springer;Akadémiai Kiadó, vol. 81(1), pages 295-309, October.
    • Handle: RePEc:spr:scient:v:81:y:2009:i:1:d:10.1007_s11192-008-2149-x
    DOI: 10.1007/s11192-008-2149-x
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    References listed on IDEAS

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    1. Wallace Koehler, 1999. "An analysis of web page and web site constancy and permanence," Journal of the American Society for Information Science, Association for Information Science & Technology, vol. 50(2), pages 162-180.
    2. Réka Albert & Hawoong Jeong & Albert-László Barabási, 1999. "Diameter of the World-Wide Web," Nature, Nature, vol. 401(6749), pages 130-131, September.
    3. Judit Bar-Ilan, 2001. "Data collection methods on the Web for infometric purposes — A review and analysis," Scientometrics, Springer;Akadémiai Kiadó, vol. 50(1), pages 7-32, January.
    4. Judit Bar-Ilan & Bluma C. Peritz, 1999. "The life span of a specific topic on the web," Scientometrics, Springer;Akadémiai Kiadó, vol. 46(3), pages 371-382, November.
    5. Quentin L. Burrell, 2002. "The nth-citation distribution and obsolescence," Scientometrics, Springer;Akadémiai Kiadó, vol. 53(3), pages 309-323, March.
    6. Jose Luis Ortega & Isidro Aguillo & Viv Cothey & Andrea Scharnhorst, 2008. "Maps of the academic web in the European Higher Education Area — an exploration of visual web indicators," Scientometrics, Springer;Akadémiai Kiadó, vol. 74(2), pages 295-308, February.
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    Cited by:

    1. Ortega, José Luis & Aguillo, Isidro, 2010. "Differences between web sessions according to the origin of their visits," Journal of Informetrics, Elsevier, vol. 4(3), pages 331-337.

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