supportingTransactions {arules}

R Documentation

Supporting Transactions

Description

Find transactions which support each of a set of associations and return this information as a transaction ID list.

Usage

supportingTransactions(x, transactions, ...)

Arguments

x	a set of associations (itemsets, rules, etc.)
transactions	an object of class transactions used to mine the associations in x.
...	currently unused.

Details

The supporting transactions are all transactions of which the itemset representing the association is a subset of.

Value

An object of class tidLists containing one transaction ID list per association in x.

Author(s)

Michael Hahsler

See Also

tidLists-class

Examples

data <- list(
	c("a","b","c"),
	c("a","b"),
	c("a","b","d"),
	c("b","e"),
	c("b","c","e"),
	c("a","d","e"),
	c("a","c"),
	c("a","b","d"),
	c("c","e"),
	c("a","b","d","e")
	)
data <- as(data, "transactions")

## mine itemsets
f <- eclat(data, parameter = list(support = .2, minlen=3))
inspect(f)

## find supporting Transactions
st <- supportingTransactions(f, data)
st

as(st, "list")

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