Search Results - subject:"Crown indicator"

The case of scientometricians with the “absolute relative” impact indicator

Vinkler, Péter - In: Journal of Informetrics 6 (2012) 2, pp. 254-264

The effect of two different calculation methods for obtaining relative impact indicators is modelled. Science policy considerations make it clear that evaluating the sets of publications, the “ratio of the sums” method should be preferred over the “mean of the ratios” method....

Persistent link: https://www.econbiz.de/10011039360

Averages of ratios compared to ratios of averages: Mathematical results

Egghe, L. - In: Journal of Informetrics 6 (2012) 2, pp. 307-317

The recently awakened discussion on the usability of averages of ratios (AoR) compared to ratios of averages (RoA) has led to the mathematical results in this paper. Based on the empirical results in Larivière and Gingras (2011) we prove, under reasonable conditions, the following relations...

Persistent link: https://www.econbiz.de/10011039396

Towards a new crown indicator: Some theoretical considerations

Waltman, Ludo; Eck, Nees Jan van; Leeuwen, Thed N. van; … - In: Journal of Informetrics 5 (2011) 1, pp. 37-47

The crown indicator is a well-known bibliometric indicator of research performance developed by our institute. The … normalization mechanism applied in the crown indicator. We also make a comparison with an alternative normalization mechanism. The … alternative mechanism turns out to have more satisfactory properties than the mechanism applied in the crown indicator. In …

Persistent link: https://www.econbiz.de/10010795083

Publication point indicators: A comparative case study of two publication point systems and citation impact in an interdisciplinary context

Elleby, Anita; Ingwersen, Peter - In: Journal of Informetrics 4 (2010) 4, pp. 512-523

, journal articles, book chapters/conference papers and monographs. Journal Crown Indicator (JCI) calculations was based on WoS …

Persistent link: https://www.econbiz.de/10010795255

Rivals for the crown: Reply to Opthof and Leydesdorff

Raan, Anthony F.J. van; Leeuwen, Thed N. van; Visser, … - In: Journal of Informetrics 4 (2010) 3, pp. 431-435

We reply to the criticism of Opthof and Leydesdorff on the way in which our institute applies journal and field normalizations to citation counts. We point out why we believe most of the criticism is unjustified, but we also indicate where we think Opthof and Leydesdorff raise a valid point.

Persistent link: https://www.econbiz.de/10010795326