associations-class {arules} | R Documentation |
The associations
class is a virtual class which is extended to
represent mining result (e.g., sets of itemsets or rules). The class
provides accessors for the quality slot and a method for sorting the
associations.
A virtual class: No objects may be created from it.
quality
:info
:"data"
(name of the transaction data set),
"ntransactions"
(length of the data set),
"support"
(the minimum support used for mining).signature(x = "associations")
;
replaces the info list.signature(x = "associations")
;
returns the info list.signature(x = "associations")
;
dummy method. This method has to be implemented by all subclasses
of associations
and return the items which make up each
association as an object of class
itemMatrix
.signature(object = "associations")
;
dummy method. This method has to be implemented by all subclasses
of associations
and return a vector
of length(object)
of labels
for the elements in the association.signature(x = "associations")
;
dummy method. This method has to be implemented by all subclasses
of associations
and return the number of elements in the
association.signature(x = "associations")
;
replaces the quality data.frame. The lengths of the vectors
in the data.frame have to equal the number of associations
in the set.signature(x = "associations")
;
returns the quality data.frame.signature(object = "associations")
SORT
,
WRITE
,
length
,
is.subset
,
is.superset
,
sets
,
unique
,
itemMatrix-class