# Michael S. Rosenberg’s Laboratory

Computational Evolutionary Biology & Bioinformatics

E-mail: msr@asu.edu
← Back to introduction

## real h-index

One can calculate the real h-index (Guns and Rousseau 2009) as the point at which the linear interpolation between the citation counts associated with publications h and h + 1 crosses a line with slope one,

$$h_r=\frac{\left(h+1\right)C_h-hC_{h+1}}{1-C_{h+1}+C_h}.$$
The real h-index has the same graphical definition as h, except it is not restricted to integer values and thus represents the actual point where the citation and threshold curves cross.

Yearhr
19971.0000
19982.5000
19993.3333
20005.0000
20016.4286
20027.5000
20039.0000
200411.6667
200513.0000
200615.0000
200717.5000
200819.5000
200923.0000
201024.2500
201126.0000
201227.8000
201329.7500
201432.0000
201534.2500
201635.0000
201735.0000

## References

• Guns, R., and R. Rousseau (2009) Real and rational variants of the h-index and the g-index. Journal of Informetrics 3:64–71.