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  • × author_ss:"Egghe, L."
  • × year_i:[2000 TO 2010}
  1. Egghe, L.: Properties of the n-overlap vector and n-overlap similarity theory (2006) 0.07 
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    Abstract
    In the first part of this article the author defines the n-overlap vector whose coordinates consist of the fraction of the objects (e.g., books, N-grams, etc.) that belong to 1, 2, , n sets (more generally: families) (e.g., libraries, databases, etc.). With the aid of the Lorenz concentration theory, a theory of n-overlap similarity is conceived together with corresponding measures, such as the generalized Jaccard index (generalizing the well-known Jaccard index in case n 5 2). Next, the distributional form of the n-overlap vector is determined assuming certain distributions of the object's and of the set (family) sizes. In this section the decreasing power law and decreasing exponential distribution is explained for the n-overlap vector. Both item (token) n-overlap and source (type) n-overlap are studied. The n-overlap properties of objects indexed by a hierarchical system (e.g., books indexed by numbers from a UDC or Dewey system or by N-grams) are presented in the final section. The author shows how the results given in the previous section can be applied as well as how the Lorenz order of the n-overlap vector is respected by an increase or a decrease of the level of refinement in the hierarchical system (e.g., the value N in N-grams).
  2. Egghe, L.: Dynamic h-index : the Hirsch index in function of time (2007) 0.01 
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    Date
    7. 3.2007 19:04:10
  3. Egghe, L.: ¬A universal method of information retrieval evaluation : the "missing" link M and the universal IR surface (2004) 0.01 
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    Date
    14. 8.2004 19:17:22
  4. Egghe, L.: Relations between the continuous and the discrete Lotka power function (2005) 0.01 
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    Source
    Journal of the American Society for Information Science and Technology. 56(2005) no.7, S.664-668
  5. Egghe, L.: Type/Token-Taken informetrics (2003) 0.01 
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    Source
    Journal of the American Society for Information Science and technology. 54(2003) no.7, S.603-610
  6. Egghe, L.: ¬The power of power laws and an interpretation of Lotkaian informetric systems as self-similar fractals (2005) 0.01 
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    Source
    Journal of the American Society for Information Science and Technology. 56(2005) no.7, S.669-675