Bradford's law
It estimates and draws the Bradford's law source distribution.
bradford(M)
M |
is a bibliographic dataframe. |
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.
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 |
biblioAnalysis function for bibliometric analysis
summary method for class 'bibliometrix'
## 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)
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