bradford {bibliometrix}R Documentation

Bradford's law

Description

It estimates and draws the Bradford's law source distribution.

Usage

bradford(M)

Arguments

M

is a bibliographic dataframe.

Details

Bradford's law is a pattern first described by (Samuel C. Bradford, 1934) that estimates the exponentially diminishing returns of searching for references in science journals.

One formulation is that if journals in a field are sorted by number of articles into three groups, each with about one-third of all articles, then the number of journals in each group will be proportional to 1:n:n2.

Reference:
Bradford, S. C. (1934). Sources of information on specific subjects. Engineering, 137, 85-86.

Value

The function bradford returns a list containing the following objects:

table a dataframe with the source distribution partitioned in the three zones
graph the source distribution plot in ggplot2 format

See Also

biblioAnalysis function for bibliometric analysis

summary method for class 'bibliometrix'

Examples


## Not run: 
file <- 'https://www.bibliometrix.org/datasets/bibliometrics_articles.txt'
M <- convert2df(file = file, dbsource = "isi", format = "bibtex")
BR <- bradford(M)

## End(Not run)


[Package bibliometrix version 3.1.4 Index]