supportingTransactions | R Documentation |
Find for each itemset in an associations object which transactions support (i.e., contains all items in the itemset) it. The information is returned as a tidLists object.
supportingTransactions(x, transactions, ...)
## S4 method for signature 'associations'
supportingTransactions(x, transactions)
x |
a set of associations (itemsets, rules, etc.) |
transactions |
an object of class transactions used to mine the
associations in |
... |
currently unused. |
An object of class tidLists containing one transaction ID
list per association in x
.
Michael Hahsler
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()
,
tidLists-class
,
transactions-class
,
unique()
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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