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Defining a core: Theoretical observations on the Egghe-Rousseau proposal

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  • Quentin L. Burrell

    (Isle of Man International Business School)

Abstract

In a recent paper Egghe & Rousseau (2002) have readdressed the problem of defining the “core” of a subject's literature by focussing on the productivity of the contributing sources as measured by their influence on an overall concentration value. Here we generalise Egghe & Rousseau's empirical approach, based upon the Gini index, to a more theoretical setting. This allows a simple visualisation of the geometry of the procedure and a complete analysis in certain classic cases. We conclude that, without additional empirical support, the approach does not appear to offer real improvement on more established and intuitively appealing schemes.

Suggested Citation

  • Quentin L. Burrell, 2003. "Defining a core: Theoretical observations on the Egghe-Rousseau proposal," Scientometrics, Springer;Akadémiai Kiadó, vol. 57(1), pages 75-92, May.
    • Handle: RePEc:spr:scient:v:57:y:2003:i:1:d:10.1023_a:1023623603913
    DOI: 10.1023/A:1023623603913
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    References listed on IDEAS

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    1. Leo Egghe & Ronald Rousseau, 2002. "A proposal to define a core of a scientific subject: A definition using concentration and fuzzy sets," Scientometrics, Springer;Akadémiai Kiadó, vol. 54(1), pages 51-62, April.
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