, Volume 96, Issue 1, pp 1–9

Experimenting with the partnership ability φ-index on a million computer scientists


DOI: 10.1007/s11192-012-0862-y

Cite this article as:
Cabanac, G. Scientometrics (2013) 96: 1. doi:10.1007/s11192-012-0862-y


Schubert introduced the partnership ability φ-index relying on a researcher’s number of co-authors and collaboration rate. As a Hirsch-type index, φ was expected to be consistent with Schubert–Glänzel’s model of h-index. Schubert demonstrated this relationship with the 34 awardees of the Hevesy medal in the field of nuclear and radiochemistry (r2 = 0.8484). In this paper, we upscale this study by testing the φ-index on a million researchers in computer science. We found that the Schubert–Glänzel’s model correlates with the million empirical φ values (r2 = 0.8695). In addition, machine learning through symbolic regression produces models whose accuracy does not exceed a 6.1 % gain (r2 = 0.9227). These results suggest that the Schubert–Glänzel’s model of φ-index is accurate and robust on the domain-wide bibliographic dataset of computer science.


Partnership ability index Co-authorship Empirical validation Symbolic regression 

Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2012

Authors and Affiliations

  1. 1.Computer Science Department, IRIT UMR 5505 CNRSUniversity of ToulouseToulouse Cedex 9France

Personalised recommendations