Supporting Transactions
Find transactions which support each of a set of associations and return this information as a transaction ID list.
supportingTransactions(x, transactions, ...)
x |
a set of associations (itemsets, rules, etc.) |
transactions |
an object of class |
... |
currently unused. |
The supporting transactions are all transactions of which the itemset representing the association is a subset of.
An object of class tidLists
containing one transaction ID list
per association in x
.
Michael Hahsler
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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