Bradford's law
It estimates and draws the Bradford's law source distribution.
bradford(M)
M: is a bibliographic dataframe.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 |
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.
## Not run: data(management, package = "bibliometrixData") BR <- bradford(management) ## End(Not run)
biblioAnalysis function for bibliometric analysis
summary method for class 'bibliometrix'
Useful links