THE BRADFORD DISTRIBUTION THEORY: THE COMPOUNDING OF BRADFORD PERIODICAL LITERATURES IN GEOGRAPHY

IF 1.7 3区管理学 Q2 INFORMATION SCIENCE & LIBRARY SCIENCE

Journal of Documentation Pub Date : 1977-03-01 DOI:10.1108/EB026642

W. Aiyepeku

引用次数: 18

Abstract

World periodical literature output in geography from 1970 to 1973 and the output concerning the USA, British Isles, France, and Germany for the same period are presented in three sets of Bradford‐Zipf bibliographs, while the verbal formulation of the law is translated into seven tables based on the same data. Results suggest that the convolution of correlated and uncorrelated Bradford distributions yields another Bradford distribution and that data conforming with the verbal formulation of Bradford's law do not automatically conform with the linear ideal of a Bradford bibliograph and vice versa.

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布拉德福德分布理论:布拉德福德地理学期刊文献的复合

从1970年到1973年，世界地理期刊的文献产出以及同期美国、不列颠群岛、法国和德国的文献产出以三套Bradford - Zipf参考书目的形式呈现，而该定律的口头表述则基于相同的数据翻译成七个表格。结果表明，相关和不相关布拉德福德分布的卷积产生另一种布拉德福德分布，符合布拉德福德定律口头表述的数据不会自动符合布拉德福德书目的线性理想，反之亦然。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Documentation INFORMATION SCIENCE & LIBRARY SCIENCE-

CiteScore

4.20

自引率

14.30%

发文量

期刊介绍： The scope of the Journal of Documentation is broadly information sciences, encompassing all of the academic and professional disciplines which deal with recorded information. These include, but are certainly not limited to: ■Information science, librarianship and related disciplines ■Information and knowledge management ■Information and knowledge organisation ■Information seeking and retrieval, and human information behaviour ■Information and digital literacies