Results 151 to 160 of about 350 (165)
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Analysis of Lotka's law: The Simon-Yule approach
Information Processing & Management, 1989Abstract A major difficulty in using the well-known Lotka's law in information science is in the estimation of parameters. In this paper, we argue that the difficulty arises from the misuse of goodness-of-fit tests. As an alternative, we adopt Simon's five-step modeling process for the study of Lotka's law.
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Lotka's law and the literature of computer science
IEEE Transactions on Professional Communication, 1979From empirical data on the authorship of scientific papers, Alfred Lotka deduced on inverse-square law relating the number of authors of scientific papers to the number of papers written by each author. A basic assumption underlying Lotka's law is that the number of papers published by a scientist is a measure of his contribution to science.
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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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Productivity differences fields of learning, and Lotka's law
Scientometrics, 1989The paper examines whether productivity differences among individual researchers are larger in some fields of learning than in others. Productivity patterns in the natural sciences, the medical sciences, the social sciences, and the humanities are compared by the use of unweighted and weighted publication counts. Irrespective of whether total number of
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Herdan-Heaps Law Corresponds to Lotka’s Law: A Dynamic Perspective from Simon’s Model
Journal of Quantitative Linguistics, 2016AbstractHerdan-Heaps law and Lotka’s law are two important laws in linguistics and many other fields, which are often found to coexist in many languages. Herdan-Heaps law describes the type-token relation between number of distinct words and text length. Lotka’s law concerns the fraction of words with a given number of word occurrences.
Yifei Zhang +4 more
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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 ...
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The Re-applicability Explore of Lotka's Law in Patent Documents
Collnet Journal of Scientometrics and Information Management, 2014Lotka's Law has always been attracting much attention in academia ever since its appearance and its applicability in literature has already gained verification. On the basic of former studies, this paper works at re-testing the applicability of Lotka's Law according to the massive data of the distribution of inventor productivity in patent literature ...
Z. K. Yang, D. M. Lin, M.Z. Xu
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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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Redesigning of Lotka’s Law with Simpson’s 3/8 Rule
Journal of Scientometric Research, 2023Anindya Basu, Bidyarthi Dutta
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