THE BRADFORD DISTRIBUTION AND THE GINI INDEX

被引:46
作者
BURRELL, QL
机构
[1] Statistical Laboratory, Department of Mathematics, University of Manchester, Manchester, M13 9PL, Oxford Road
关键词
D O I
10.1007/BF02017568
中图分类号
TP39 [计算机的应用];
学科分类号
081203 ; 0835 ;
摘要
It is pointed out that the so-called "Bradford distribution" derived by Leimkuhler is more properly viewed as the theoretical form of a variant of the Lorenz curve. The equation of this Leimkuhler curve allows an easy calculation of the Gini coefficient of concentration which can be compared with empirical values.
引用
收藏
页码:181 / 194
页数:14
相关论文
共 21 条
[1]  
Bradford S. C., 1948, DOCUMENTATION
[2]  
Bradford S.C., 1934, ENGINEERING, V137, P86, DOI DOI 10.1177/016555158501000407
[3]   DERIVATION AND APPLICATION OF BRADFORD-ZIPF DISTRIBUTION [J].
BROOKES, BC .
JOURNAL OF DOCUMENTATION, 1968, 24 (04) :247-&
[4]   THE 80-20 RULE - LIBRARY LORE OR STATISTICAL LAW [J].
BURRELL, QL .
JOURNAL OF DOCUMENTATION, 1985, 41 (01) :24-39
[5]  
BURRELL QL, 1990, NONEQUIVALENCE BRADF
[6]   SIMILARITY OF PRATT MEASURE OF CLASS CONCENTRATION TO THE GINI INDEX [J].
CARPENTER, MP .
JOURNAL OF THE AMERICAN SOCIETY FOR INFORMATION SCIENCE, 1979, 30 (02) :108-110
[7]  
EGGHE L, 1987, J AM SOC INFORM SCI, V38, P288, DOI 10.1002/(SICI)1097-4571(198707)38:4<288::AID-ASI9>3.0.CO
[8]  
2-Q
[9]  
EGGHE L, 1990, INFORMETRICS 89 90
[10]  
EGGHE L, 1990, J AM SOC INFORM SCI, V1, P204