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Journal of Information Science
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Longitudinal study of content and elements in the scientific web environment

José Luis Ortega

Internet Lab, Centro de Información y Documentación Científica (CSIC), Madrid, Spain, jortega{at}cindoc.csic.es

Isidro Aguillo

Internet Lab, Centro de Información y Documentación Científica (CSIC), Madrid, Spain

José Antonio Prieto

Internet Lab, Centro de Información y Documentación Científica (CSIC), Madrid, Spain

This work is a longitudinal study of the evolution and the state of 738 web sites at two different points in time (1997 and 2004). It tries to establish the rate of growth and decay of the web and all the web elements. To this end, the structure and the contents of these web sites are extracted through a crawler and compared at the two different moments in time. The main results confirm a growth of web content and elements in the web, although there is also a high degree of web content decay. The results suggest that in the seven-year period covered by this study the web is characterized by both strong dynamism and instability.

Key Words: webometrics • web persistence • web growth • web decay • linkrot • bibliometrics

This version was published on August 1, 2006

Journal of Information Science, Vol. 32, No. 4, 344-351 (2006)
DOI: 10.1177/0165551506065785
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M. Thelwall
Bibliometrics to webometrics
Journal of Information Science, August 1, 2008; 34(4): 605 - 621.
[Abstract] [PDF]