lotka {bibliometrix}R Documentation

Lotka's law coefficient estimation

Description

It estimates Lotka's law coefficients for scientific productivity (Lotka A.J., 1926).

Usage

lotka(results)

Arguments

results

is an object of the class 'bibliometrix' for which the analysis of the authors' dominance ranking is desired.

Details

Reference: Lotka, A. J. (1926). The frequency distribution of scientific productivity. Journal of the Washington academy of sciences, 16(12), 317-323.

Value

The function lotka returns a list of summary statistics of the Lotka's law estimation of an object of class bibliometrix.

the list contains the following objects:

Beta Beta coefficient
C Constant coefficient
R2 Goodness of Fit
fitted Fitted Values
p.value Pvalue of two-sample Kolmogorov-Smirnov test between the empirical and the theorical Lotka's Law distribution (with Beta=2)
AuthorProd Authors' Productivity frequency table

See Also

biblioAnalysis function for bibliometric analysis

summary method for class 'bibliometrix'

Examples

data(scientometrics, package = "bibliometrixData")
results <- biblioAnalysis(scientometrics)
L=lotka(results)
L


[Package bibliometrix version 3.1.4 Index]