duplicatedMatching {bibliometrix} | R Documentation |
Searching of duplicated records in a bibliographic database
Description
Search duplicated records in a dataframe.
Usage
duplicatedMatching(M, Field = "TI", exact = FALSE, tol = 0.95)
Arguments
M |
is the bibliographic data frame. |
Field |
is a character object. It indicates one of the field tags used to identify duplicated records. Field can be equal to one of these tags: TI (title), AB (abstract), UT (manuscript ID). |
exact |
is logical. If exact = TRUE the function searches duplicates using exact matching. If exact=FALSE, the function uses the restricted Damerau-Levenshtein distance to find duplicated documents. |
tol |
is a numeric value giving the minimum relative similarity to match two manuscripts. Default value is |
Details
A bibliographic data frame is obtained by the converting function convert2df
.
It is a data matrix with cases corresponding to manuscripts and variables to Field Tag in the original SCOPUS and Clarivate Analytics WoS file.
The function identifies duplicated records in a bibliographic data frame and deletes them.
Duplicate entries are identified through the restricted Damerau-Levenshtein distance.
Two manuscripts that have a relative similarity measure greater than tol
argument are stored in the output data frame only once.
Value
the value returned from duplicatedMatching
is a data frame without duplicated records.
See Also
convert2df
to import and convert an WoS or SCOPUS Export file in a bibliographic data frame.
biblioAnalysis
function for bibliometric analysis.
summary
to obtain a summary of the results.
plot
to draw some useful plots of the results.
Examples
data(scientometrics, package = "bibliometrixData")
M=rbind(scientometrics[1:20,],scientometrics[10:30,])
newM <- duplicatedMatching(M, Field = "TI", exact=FALSE, tol = 0.95)
dim(newM)