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  • × author_ss:"Egghe, L."
  1. Egghe, L.: ¬The influence of transformations on the h-index and the g-index (2008) 0.00 
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    Abstract
    In a previous article, we introduced a general transformation on sources and one on items in an arbitrary information production process (IPP). In this article, we investigate the influence of these transformations on the h-index and on the g-index. General formulae that describe this influence are presented. These are applied to the case that the size-frequency function is Lotkaian (i.e., is a decreasing power function). We further show that the h-index of the transformed IPP belongs to the interval bounded by the two transformations of the h-index of the original IPP, and we also show that this property is not true for the g-index.
    Source
    Journal of the American Society for Information Science and Technology. 59(2008) no.8, S.1304-1312
  2. Egghe, L.; Rousseau, R.; Hooydonk, G. van: Methods for accrediting publications to authors or countries : consequences for evaluation studies (2000) 0.00 
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    Abstract
    One aim of science evaluation studies is to determine quantitatively the contribution of different players (authors, departments, countries) to the whole system. This information is then used to study the evolution of the system, for instance to gauge the results of special national or international programs. Taking articles as our basic data, we want to determine the exact relative contribution of each coauthor or each country. These numbers are brought together to obtain country scores, or department scores, etc. It turns out, as we will show in this article, that different scoring methods can yield totally different rankings. Conseqeuntly, a ranking between countries, universities, research groups or authors, based on one particular accrediting methods does not contain an absolute truth about their relative importance
    Source
    Journal of the American Society for Information Science. 51(2000) no.2, S.145-157
  3. Egghe, L.; Guns, R.; Rousseau, R.: Thoughts on uncitedness : Nobel laureates and Fields medalists as case studies (2011) 0.00 
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    Footnote
    Vgl.: Erratum. In: Journal of the American Society for Information Science and Technology. 63(2012) no.2, S.429.
    Source
    Journal of the American Society for Information Science and Technology. 62(2011) no.8, S.1637-1644
  4. Egghe, L.: ¬The amount of actions needed for shelving and reshelving (1996) 0.00 
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    Abstract
    Discusses the number of actions (or time) needed to organize library shelves. Studies 2 types pf problem: organizing a library shelf out of an unordered pile of books, and putting an existing shelf of books in the rough order. Uses results from information theory as well as from rank order statistics (runs). Draws conclusions about the advised frequency with which these actions should be undertaken
  5. Egghe, L.: On the law of Zipf-Mandelbrot for multi-word phrases (1999) 0.00 
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    Source
    Journal of the American Society for Information Science. 50(1999) no.3, S.233-241
  6. Egghe, L.; Rousseau, R.: ¬The influence of publication delays on the observed aging distribution of scientific literature (2000) 0.00 
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    Source
    Journal of the American Society for Information Science. 51(2000) no.2, S.158-165
  7. Egghe, L.; Liang, L.; Rousseau, R.: ¬A relation between h-index and impact factor in the power-law model (2009) 0.00 
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    Source
    Journal of the American Society for Information Science and Technology. 60(2009) no.11, S.2362-2365
  8. Egghe, L.: Dynamic h-index : the Hirsch index in function of time (2007) 0.00 
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    Source
    Journal of the American Society for Information Science and Technology. 58(2007) no.3, S.452-454
  9. Egghe, L.; Rousseau, R.: ¬An h-index weighted by citation impact (2008) 0.00 
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    Source
    Information processing and management. 44(2008) no.2, S.770-780
  10. Egghe, L.: On the relation between the association strength and other similarity measures (2010) 0.00 
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    Source
    Journal of the American Society for Information Science and Technology. 61(2010) no.7, S.1502-1504
  11. Egghe, L.: Informetric explanation of some Leiden Ranking graphs (2014) 0.00 
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    Source
    Journal of the Association for Information Science and Technology. 65(2014) no.4, S.737-741
  12. Egghe, L.: ¬The power of power laws and an interpretation of Lotkaian informetric systems as self-similar fractals (2005) 0.00 
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    Abstract
    Power laws as defined in 1926 by A. Lotka are increasing in importance because they have been found valid in varied social networks including the Internet. In this article some unique properties of power laws are proven. They are shown to characterize functions with the scalefree property (also called seif-similarity property) as weIl as functions with the product property. Power laws have other desirable properties that are not shared by exponential laws, as we indicate in this paper. Specifically, Naranan (1970) proves the validity of Lotka's law based on the exponential growth of articles in journals and of the number of journals. His argument is reproduced here and a discrete-time argument is also given, yielding the same law as that of Lotka. This argument makes it possible to interpret the information production process as a seif-similar fractal and show the relation between Lotka's exponent and the (seif-similar) fractal dimension of the system. Lotkaian informetric systems are seif-similar fractals, a fact revealed by Mandelbrot (1977) in relation to nature, but is also true for random texts, which exemplify a very special type of informetric system.
    Source
    Journal of the American Society for Information Science and Technology. 56(2005) no.7, S.669-675
  13. Egghe, L.: Sampling and concentration values of incomplete bibliographies (2002) 0.00 
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    Source
    Journal of the American Society for Information Science and technology. 53(2002) no.4, S.271-281
  14. Egghe, L.; Rousseau, R.; Rousseau, S.: TOP-curves (2007) 0.00 
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    Source
    Journal of the American Society for Information Science and Technology. 58(2007) no.6, S.777-785
  15. Egghe, L.; Liang, L.; Rousseau, R.: Fundamental properties of rhythm sequences (2008) 0.00 
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    Source
    Journal of the American Society for Information Science and Technology. 59(2008) no.9, S.1469-1478
  16. Egghe, L.: ¬A rationale for the Hirsch-index rank-order distribution and a comparison with the impact factor rank-order distribution (2009) 0.00 
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    Source
    Journal of the American Society for Information Science and Technology. 60(2009) no.10, S.2142-2144
  17. Egghe, L.: ¬A new short proof of Naranan's theorem, explaining Lotka's law and Zipf's law (2010) 0.00 
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    Source
    Journal of the American Society for Information Science and Technology. 61(2010) no.12, S.2581-2583
  18. Egghe, L.; Rousseau, R.: ¬The Hirsch index of a shifted Lotka function and its relation with the impact factor (2012) 0.00 
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    Journal of the American Society for Information Science and Technology. 63(2012) no.5, S.1048-1053
  19. Egghe, L.: Remarks on the paper by A. De Visscher, "what does the g-index really measure?" (2012) 0.00 
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    Journal of the American Society for Information Science and Technology. 63(2012) no.10, S.2118-2121
  20. Egghe, L.: Theory of the topical coverage of multiple databases (2013) 0.00 
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    Source
    Journal of the American Society for Information Science and Technology. 64(2013) no.1, S.126-131

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