The effect of database dirty data on h-index calculation
- 547 Downloads
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