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On the time dependence of the h-index

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  • Mannella, Riccardo
  • Rossi, Paolo

Abstract

The time dependence of the h-index is analyzed by considering the average behavior of h as a function of the academic age AA for about 1400 Italian physicists, with career lengths spanning from 3 to 46 years. The individual h-index is strongly correlated with the square root of the total citations NC: h≈0.53NC. For academic ages ranging from 12 to 24 years, the distribution of the time scaled index h/AA is approximately time-independent and it is well described by the Gompertz function. The time scaled index h/AA has an average approximately equal to 3.8 and a standard deviation approximately equal to 1.6. Finally, the time scaled index h/AA appears to be strongly correlated with the contemporary h-index hc.

Suggested Citation

  • Mannella, Riccardo & Rossi, Paolo, 2013. "On the time dependence of the h-index," Journal of Informetrics, Elsevier, vol. 7(1), pages 176-182.
    • Handle: RePEc:eee:infome:v:7:y:2013:i:1:p:176-182
    DOI: 10.1016/j.joi.2012.10.003
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    References listed on IDEAS

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    1. Wu, Jiang & Lozano, Sergi & Helbing, Dirk, 2011. "Empirical study of the growth dynamics in real career h-index sequences," Journal of Informetrics, Elsevier, vol. 5(4), pages 489-497.
    2. Leo Egghe, 2009. "Comparative study of h-index sequences," Scientometrics, Springer;Akadémiai Kiadó, vol. 81(2), pages 311-320, November.
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    Cited by:

    1. Cappelletti-Montano, Beniamino & Columbu, Silvia & Montaldo, Stefano & Musio, Monica, 2021. "New perspectives in bibliometric indicators: Moving from citations to citing authors," Journal of Informetrics, Elsevier, vol. 15(3).

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