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本文介绍如何用回归分析方法对布拉德福分布作定量分析,包括布拉德福常数的确定,核心区与非核心区的划分,以及布鲁克斯公式中的系数α,β,k,s 的回归计算法,从而修正了布氏的近似公式:直线斜率k(?)期刊总数 N。对于莱姆库勒的几个公式,由于公式推导中用了d_1+d_2+…+d_m=1,但它仅当 m→(?)时才成立,作者通过另一途径导出了修正公式。
This article describes how to use regression analysis to make a quantitative analysis of the Bradford distribution, including the determination of the Bradford constant, the division of the core and non-core regions, and the regression of the coefficients α, β, k, s in the Brooks formula The calculation method, thus correcting the approximate formula of Brinell: Straight slope k (?) The total number of journals. For several Lymecules’ formulas, since d_1 + d_2 + ... + d_m = 1 is used in the derivation of the formula, it is only valid if m → (?). The author derives the correction formula by another way.