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| Journal of the American… | 2 |
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Peer reviewedSchubert, Andras; Telcs, Andras – Journal of the American Society for Information Science, 1989
Demonstrates the use of the Waring distribution as a model for the frequency distribution of scientific productivity. Methods for testing the fit at both ends of the distribution, as well as for estimating the parameters of the distribution and the total number of scientists, are outlined. (16 references) (Author/CLB)
Descriptors: Estimation (Mathematics), Functions (Mathematics), Models, Probability
Peer reviewedEgghe, L. – Journal of the American Society for Information Science, 1997
Proves price index (proportion of references within the last five years of literature) is not a pure function of the mean or median reference age, but a well-defined relation in the form of a typical cloud of points. Compares models for analyzing price index (decreasing exponential and lognormal aging) and explains cloud using results from…
Descriptors: Citations (References), Comparative Analysis, Cost Indexes, Functions (Mathematics)
