Comparing Google Scholar and ISI Web of Science for Earth Sciences
In order to measure the degree to which Google Scholar can compete with bibliographical databases, search results from this database is compared with Thomson’s ISI WoS (Institute for Scientific Information, Web of Science). For earth science literature 85% of documents indexed by ISI WoS were recalled by Google Scholar. The rank of records displayed in Google Scholar and ISI WoS, is compared by means of Spearman’s footrule. For impact measures the h-index is investigated. Similarities in measures were significant for the two sources.
KeywordsCitation analysis Similarity measures Rankings Impact measures
- Belew, R. K. (2005). Scientific impact quantity and quality: Analysis of two sources of bibliographic data. Journal. Retrieved from http://arxiv.org/abs/cs/0504036.
- Garfield, E. (1990). How ISI selects journals for coverage—quantitative and qualitative considerations. Current Contents, 22, 5–13.Google Scholar
- GeoRef. The American Geological Institute. (No Date). About GeoRef. Retrieved July 11, 2008, from http://www.agiweb.org/georef/about/.
- Google Scholar. (No Date). About Google Scholar. Retrieved July 11, 2008, from http://scholar.google.com/intl/en/scholar/about.html.
- ISI WoS. Thomson Scientific. (No Date). Web of Science. Retrieved July 11, 2008, from http://scientific.thomsonreuters.com/products/wos/.
- Pauly, D., & Stergiou, K. I. (2005). Equivalence of results from two citation analyses: Thomson ISI’s citation index and Google’s scholar service. Ethics in Science and Environmental Politics, 2005, 33–35.Google Scholar
- Scopus. Elsevier. (No Date). Scopus Info—Scopus in Detail—What does it cover? Retrieved July 11, 2008, from http://info.scopus.com/detail/what/.