The effect of database dirty data on h-index calculation
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As all databases, the bibliometric ones (e.g. Scopus, Web of Knowledge and Google Scholar) are not exempt from errors, such as missing or wrong records, which may obviously affect publication/citation statistics and—more in general—the resulting bibliometric indicators. This paper tries to answer to the question “What is the effect of database uncertainty on the evaluation of the h-index?”, breaking the paradigm of deterministic database analysis and treating responses to database queries as random variables. Precisely an informetric model of the h-index is used to quantify the variability of this indicator with respect to the variability stemming from errors in database records. Some preliminary results are presented and discussed.
KeywordsCitations h-index h-index robustness Uncertain data Dirty database
- Casella, G., & Berger, R. L. (2001). Statistical inference (2nd ed., pp. 240–245). North Scituate: Duxbury Press.Google Scholar
- Courtault, J. M., & Hayek, N. (2008). On the Robustness of the h-index: a mathematical approach. Economics Bulletin, 3(78), 1–9.Google Scholar
- Egghe, L. (2005a). Power laws in the information production process: Lotkaian informetrics. London: Academic Press.Google Scholar
- Franceschini, F. M., Galetto, D. M., & Mastrogiacomo, L. (2012a). An informetric model for the success-index. Forthcoming on Journal of Informetrics.Google Scholar
- Glänzel, W. (2006b). On the opportunities and limitations of the h-index. Science focus, 1(1), 10–11Google Scholar
- JCGM100:2008 (2008). Evaluation of measurement data—Guide to the expression of uncertainty in measurement. International Organization for Standardization, Geneve, SwitzerlandGoogle Scholar
- Lotka, A. J. (1926). The frequency distribution of scientific productivity. Journal of Washington Academy Sciences, 16, 317–323.Google Scholar
- Scopus-Elsevier. (2012). Scopus Content Coverage. Retrieved September 2012, from http://www.scopus.com.
- Thomson-Reuters (Ed.) (2012) 2011 Journal Citation Reports® Science Edition.Google Scholar
- Times Higher Education. (2012). The World University Rankings. Retrieved September 2012, from http://www.timeshighereducation.co.uk/world-university-rankings/.
- Van Raan, A. F. J. (2006). Comparison of the Hirsch-index with standard bibliometric indicators and with peer judgment for 147 chemistry research groups. Scientometrics, 67(3), 491–502.Google Scholar