, Volume 87, Issue 3, pp 515–524 | Cite as

The Energy–Exergy–Entropy (or EEE) sequences in bibliometric assessment

  • Gangan PrathapEmail author


Bibliometric research assessment has matured into a quantitative phase using more meaningful measures and analogies. In this paper, we propose a thermodynamic analogy and introduce what are called the energy, exergy and entropy terms associated with a bibliometric sequence. This can be displayed as time series (variation over time), or in event terms (variation as papers are published) and also in the form of phase diagrams (energy–exergy–entropy representations). It is exergy which is the most meaningful single number scalar indicator of a scientist’s performance while entropy then becomes a measure of the unevenness (disorder) of the publication portfolio.


Bibliometrics X = iC Energy Exergy Entropy S = E − X p-index 



The author is grateful to anonymous referees for their valuable comments which have helped to improve the paper.


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2011

Authors and Affiliations

  1. 1.National Institute for Science Communication and Information ResourcesNew DelhiIndia

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