arules (version 0.2-6)

subset: Subsetting Itemsets, Rules and Transactions

Description

Provides the generic function subset and S4 methods to subset associations or transactions (itemMatrix) which meet certain conditions (e.g., contains certain items or satisfies a minimum lift).

Usage

subset(x, ...)
## S3 method for class 'itemMatrix':
subset(x, subset, ...)
## S3 method for class 'itemsets':
subset(x, subset, ...)
## S3 method for class 'rules':
subset(x, subset, ...)
## S3 method for class 'itemMatrix':
subset(x, subset, ...)

Arguments

x

object to be subsetted.

subset

logical expression indicating elements to keep.

...

further arguments to be passed to or from other methods.

Value

• An object of the same class as x containing only the elements which satisfy the conditions.

See Also

itemMatrix-class, itemsets-class, rules-class, transactions-class

Examples

data("Adult")
rules <- apriori(Adult)

### subset the rules
rules.sub <- subset(rules, subset = rhs %in% "Never-married" & lift > 2)