Add probable duplicate sets fields to the PGR passport database

AddProbDup adds the fuzzy, phonetic and semantic probable duplicates sets data fields from an object of class ProbDup to the original PGR passport database.

AddProbDup(pdup, db, addto = c("I", "II"), max.count = 30)

An object of class ProbDup.


A data frame of the PGR passport database.


Either "I" or "II" indicating the database to which the data.fields are to be added (see Details).


The maximum count of probable duplicate sets whose information is to be retrieved.


This function helps to add information associated with identified fuzzy, phonetic and semantic probable duplicate sets using the ProbDup function to the original PGR passport database. Associated data fields such as SET_NO, ID and IDKW are added based on the PRIM_ID field(column).

In case more than one KWIC index was used to generate the object of class ProbDup, the argument addto can be used to specify to which database the data fields are to be added. The default "I" indicates the database from which the first KWIC index was created and "II" indicates the database from which the second index was created.


A data frame of the PGR passport database with the probable duplicate sets fields added.


When any primary ID/key records in the fuzzy, phonetic or semantic duplicate sets are found to be missing from the original database db, then they are ignored and only the matching records are considered for adding the information with a warning.

This may be due to data standardization of the primary ID/key field using the function DataClean before creation of the KWIC index and subsequent identification of probable duplicate sets. In such a case, it is recommended to use an identical data standardization operation on the database db before running this function.

See Also

DataClean, KWIC, ProbDup

  • AddProbDup
#' # Load PGR passport database
GN <- GN1000

# Specify as a vector the database fields to be used
GNfields <- c("NationalID", "CollNo", "DonorID", "OtherID1", "OtherID2")

# Clean the data
GN[GNfields] <- lapply(GN[GNfields], function(x) DataClean(x))
y1 <- list(c("Gujarat", "Dwarf"), c("Castle", "Cary"), c("Small", "Japan"),
c("Big", "Japan"), c("Mani", "Blanco"), c("Uganda", "Erect"),
c("Mota", "Company"))
y2 <- c("Dark", "Light", "Small", "Improved", "Punjab", "SAM")
y3 <- c("Local", "Bold", "Cary", "Mutant", "Runner", "Giant", "No.",
        "Bunch", "Peanut")
GN[GNfields] <- lapply(GN[GNfields], function(x) MergeKW(x, y1, delim = c("space", "dash")))
GN[GNfields] <- lapply(GN[GNfields], function(x) MergePrefix(x, y2, delim = c("space", "dash")))
GN[GNfields] <- lapply(GN[GNfields], function(x) MergeSuffix(x, y3, delim = c("space", "dash")))

# Generate KWIC index
GNKWIC <- KWIC(GN, GNfields)

# Specify the exceptions as a vector
exep <- c("A", "B", "BIG", "BOLD", "BUNCH", "C", "COMPANY", "CULTURE", 
         "DARK", "E", "EARLY", "EC", "ERECT", "EXOTIC", "FLESH", "GROUNDNUT", 
         "LIGHT", "LOCAL", "OF", "OVERO", "P", "PEANUT", "PURPLE", "R", 
         "RED", "RUNNER", "S1", "SAM", "SMALL", "SPANISH", "TAN", "TYPE", 
         "U", "VALENCIA", "VIRGINIA", "WHITE")
# Specify the synsets as a list
syn <- list(c("CHANDRA", "AH114"), c("TG1", "VIKRAM"))

# Fetch probable duplicate sets
GNdup <- ProbDup(kwic1 = GNKWIC, method = "a", excep = exep, fuzzy = TRUE,
                 phonetic = TRUE, encoding = "primary", 
                 semantic = TRUE, syn = syn)

# Add the duplicates sets to the original database                 
GNwithdup <-  AddProbDup(pdup = GNdup, db = GN1000, addto = "I")                  

# }
Documentation reproduced from package PGRdup, version, License: GPL-2 | GPL-3

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