specc-class {kernlab} | R Documentation

## Class "specc"

### Description

The Spectral Clustering Class

### Objects from the Class

Objects can be created by calls of the form `new("specc", ...)`. or by calling the function `specc`.

### Slots

`.Data`:

  Object of class `"vector"` containing the cluster assignments

`centers`:

  Object of class `"matrix"` containing the cluster centers

`size`:

  Object of class `"vector"` containing the number of points in each cluster

`withinss`:

  Object of class `"vector"` containing the within-cluster sum of squares for each cluster

`kernelf`

  Object of class `kernel` containing the used kernel function.

### Methods

centers

  `signature(object = "specc")`: returns the cluster centers

withinss

  `signature(object = "specc")`: returns the within-cluster sum of squares for each cluster

size

  `signature(object = "specc")`: returns the number of points in each cluster

### Author(s)

Alexandros Karatzoglou
alexandros.karatzoglou@ci.tuwien.ac.at

### See Also

`specc`, `kpca-class`

### Examples

    ## Cluster the spirals data set.
    data(spirals)

    sc <- specc(spirals, centers=2)

    centers(sc)
    size(sc)

[Package kernlab version 0.9-25 Index]