Results 151 to 160 of about 429 (164)
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Price's square root law: Empirical validity and relation to Lotka's law
Information Processing & Management, 1988Abstract Price's well-known square root law states that half of the literature on a subject will be contributed by the square root of the total number of authors publishing in that area. Price's contention is treated here as a hypothesis and assessed against the evidence presented by both empirical and simulated author productivity distributions. The
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Personal name headings in COBIB: Testing Lotka’s Law
Scientometrics, 2008The purpose of this article is to provide information about author productivity as reflected through the number of occurrences of personal name headings in the Slovenian online catalogue COBIB. Only authors associated with monographs are treated. So, author productivity of monographs that has not been widely researched is empirically examined to ...
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Bibliometric modeling processes and the empirical validity of Lotka's Law
Journal of the American Society for Information Science, 1989Une litterature abondante porte sur la validite empirique de la loi de Lotka: ces etudes ne sont malheureusement pas concluantes et ne peuvent pas etre comparees par suite des differences importantes entre les methodes d'analyse utilisees. Les principaux elements a prendre en compte pour l'adaptation d'un modele bibliometrique a des donnees empiriques ...
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Psychology of the Scientist: XI. Lotka's Law and Research Visibility
Psychological Reports, 1965Previous research has shown that, when scientists are rank ordered on the basis of number of publications and the number of publications is then plotted against these ranks, the resulting productivity curves are typically exponential in form. Citations to journal articles were analyzed to show that citations are similarly distributed, with the 10% most
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The underlying process generating Lotka's Law and the statistics of exceedances
Information Processing & Management, 1998Lotka's Law is a widely observed distribution of authors of scholarly papers and patents. Numerous studies over the past seventy years have found Lotka's Law describes production in fields as diverse as chemistry, economics, history, information science, musicology, patents and psychology.
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Author Distribution of Literature Information: Lotka’s Law
2017The basic laws of infometrics are Bradford’s law, Zipf’s law, and Lotka’s law. Lotka’s law explains scientific productivity and the relationship between authors and the quantities of their papers.
Junping Qiu +3 more
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Collaboration and author productivity: A study with a new variable in Lotka's law
Scientometrics, 1999The paper explores the possibility of using a new variable represented by the number of collaborators per author as a substitute for the number of papers in Lotka's distribution to predict the productivity strata. On the basis of a case study in theoretical population genetics it is concluded that the number of collaborators per author has not proved ...
Brij Mohan Gupta, C. R. Karisiddappa
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Emerald authorship data, Lotka's law and research productivity
Aslib Proceedings, 2005Purpose – This paper offers a practical insight into the application of Lotka's law of author productivity to the question of how likely it is that an author will return to a particular publisher (rather than make another contribution to a subject literature, which is its usual application).
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A new short proof of Naranan's theorem, explaining Lotka's law and Zipf's law
Journal of the American Society for Information Science and Technology, 2010AbstractNaranan's important theorem, published in Nature in 1970, states that if the number of journals grows exponentially and if the number of articles in each journal grows exponentially (at the same rate for each journal), then the system satisfies Lotka's law and a formula for the Lotka's exponent is given in function of the growth rates of the ...
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