unique: Remove Duplicated Elements from a Collection

In arules: Mining Association Rules and Frequent Itemsets

Remove Duplicated Elements from a Collection

Description

Provides the generic function unique() and the methods for itemMatrix transactions, and associations.

Usage

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

## S4 method for signature 'itemMatrix'
unique(x, incomparables = FALSE)

## S4 method for signature 'associations'
unique(x, incomparables = FALSE, ...)

Arguments

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

Details

unique() uses duplicated() to return an object with the duplicate elements removed.

Value

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

Author(s)

Michael Hahsler

See Also

Other associations functions: abbreviate(), associations-class, c(), duplicated(), extract, inspect(), is.closed(), is.generator(), is.maximal(), is.redundant(), is.significant(), is.superset(), itemsets-class, match(), rules-class, sample(), sets, size(), sort()

Other itemMatrix and transactions functions: abbreviate(), c(), crossTable(), duplicated(), extract, hierarchy, image(), inspect(), is.superset(), itemFrequency(), itemFrequencyPlot(), itemMatrix-class, match(), merge(), random.transactions(), sample(), sets, size(), supportingTransactions(), tidLists-class, transactions-class

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 documentation built on Sept. 11, 2024, 8:15 p.m.