Itemwise Set Operations
Provides the generic functions and the S4 methods for itemwise set operations on items in an itemMatrix. The regular set operations regard each itemset in an itemMatrix as an element. Itemwise operations regard each item as an element and operate on the items of pairs if corresponding itemsets (first itemset in x with first itemset in y, second with second, etc.).
itemUnion(x, y) itemSetdiff(x, y) itemIntersect(x, y)
x,y |
two itemMatrix objects with the same number of rows (itemsets). |
An object
of class itemMatrix is returned.
Michael Hahsler
data("Adult")
fsets <- eclat(Adult, parameter = list(supp = 0.5))
inspect(fsets[1:4])
inspect(itemUnion(items(fsets[1:2]), items(fsets[3:4])))
inspect(itemSetdiff(items(fsets[1:2]), items(fsets[3:4])))
inspect(itemIntersect(items(fsets[1:2]), items(fsets[3:4])))Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.