proximity-classes {arules} | R Documentation |
Simple classes to represent proximity matrices.
For compatibility with clustering functions in R
,
we represent dissimilarities as the S3
class dist
.
For cross-dissimilarities and similarities, we provide
the S4
classes
ar_cross_dissimilarities
and
ar_similarities
.
dist
objects are the result of calling the method
dissimilarity
with one argument
or any R
function returning a
S3 dist
object.
ar_cross_dissimilarity
objects are the result of calling the method
dissimilarity
with two arguments,
by calls of the form new("similarity", ...)
,
or by coercion from matrix.
ar_similarity
objects are the result of calling the method
affinity
, by calls of the form new("similarity", ...)
,
or by coercion from matrix.
The S4
classes have a method
slot which contains the
type of measure used for calculation.
dist
(in package stats
),
dissimilarity
,
affinity
.