R: Classes dist, ar\_cross\_dissimilarity and ar\_similarity -...

proximity-classes {arules} | R Documentation

## Classes dist, ar\_cross\_dissimilarity and ar\_similarity — Proximity Matrices

### Description

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`.

### Objects from the Class

`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.

### Slots

The `S4` classes have a `method` slot which contains the type of measure used for calculation.

### Author(s)

Michael Hahsler

### See Also

`dist` (in package `stats`), `dissimilarity`, `affinity`.

[Package arules version 1.6-7 Index]