arules: unique – R documentation

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unique

Remove Duplicated Elements from a Collection

Description

Provides the generic function unique and the S4 methods for itemMatrix. unique uses duplicated to return an itemMatrix with the duplicate elements removed.

Note that unique can also be used on collections of associations.

Usage

unique(x, incomparables = FALSE, ...)

Arguments

`x`	an object of class `itemMatrix` or associations.
`...`	further arguments (currently unused).
`incomparables`	currently unused.

Value

An object of the same class as x with duplicated elements removed.

Author(s)

Michael Hahsler

Examples

data("Adult")

r1 <- apriori(Adult[1:1000], parameter = list(support = 0.5))
r2 <- apriori(Adult[1001:2000], parameter = list(support = 0.5))

## Note that this produces a collection of rules from two sets
r_comb <- c(r1, r2)
r_comb <- unique(r_comb)
r_comb

arules

Mining Association Rules and Frequent Itemsets

v1.6-7

GPL-3

Authors

Michael Hahsler [aut, cre, cph], Christian Buchta [aut, cph], Bettina Gruen [aut, cph], Kurt Hornik [aut, cph], Ian Johnson [ctb, cph], Christian Borgelt [ctb, cph]

Initial release

2021-03-12