کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
524071 | 868550 | 2011 | 7 صفحه PDF | دانلود رایگان |
We define the generalized Wu- and Kosmulski-indices, allowing for general parameters of multiplication or exponentiation. We then present formulae for these generalized indices in a Lotkaian framework.Next we characterise these indices in terms of their dependence on the quotient of the average number of items per source in the m-core divided by the overall average (m is any generalized Wu- or Kosmulski-index).As a consequence of these results we show that the fraction of used items (used in the definition of m) in the m-core is independent of the parameter and equals one divided by the overall average.
► We define and prove formulae for the generalized Wu- and Kosmulski-indices, allowing for general parameters of multiplication or exponentiation.
► Next we characterise these indices in terms of the average number of items per source in the m-core.
► We show that the fraction of used items in the m-core equals one divided by the overall average.
Journal: Journal of Informetrics - Volume 5, Issue 3, July 2011, Pages 439–445