# Michael S. Rosenberg’s Laboratory

Computational Evolutionary Biology & Bioinformatics

E-mail: msr@asu.edu
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## contemporary h-index

The contemporary h-index (Sidiropoulos et al. 2007) is designed to give more weight to the citations of recent publications and less weight to the citations of older publications. In its most general form, the contemporary score for a specific publication is

$$S^C_i=\gamma \left(Y-Y_i+1\right)^{-\delta}C_i.$$

The contemporary h-index for an author, hC, is calculated similarly to the standard h-index, in that an author has a score of hC if hC of their articles (ranked by SC) have SChC.

$$h^C=\underset{i}{\max}\left(i \leq S^C_i\right)$$Sidiropuolos et al. (2007) set γ = 4 and δ = 1. These choices have the consequence of making this metric virtually identical to hpd, except measured on a four year cycle rather than a decade.

### Example

Publications are ordered by adjusted number of citations, from highest to lowest.

 Citations (Ci) Age (Y − Yi + 1) Adjusted Citations ($$S^{C}_i$$) Rank (i) 36 42 14 11 2 9 9 2 1 2 3 1 1 0 0 0 2 5 5 4 1 5 5 2 1 3 5 2 2 2 1 1 72.00 33.60 11.20 11.00 8.00 7.20 7.20 4.00 4.00 2.67 2.40 2.00 2.00 0.00 0.00 0.00 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 hC = 7

The largest rank where $$i \leq S^{C}_i$$ is 7.

YearhC
19972
19983
19993
20005
20017
20029
200310
200410
200512
200614
200716
200817
200918
201020
201120
201220
201321
201421
201521
201621
201720

## References

• Sidiropoulos, A., D. Katsaros, and Y. Manolopoulos (2007) Generalized Hirsch h-index for disclosing latent facts in citation networks. Scientometrics 72(2):253–280.