Affinity Propagation Clustering Learner

A LearnerClust for Affinity Propagation clustering implemented in apcluster::apcluster(). apcluster::apcluster() doesn't have set a default for similarity function. Therefore, the s parameter here is set to apcluster::negDistMat(r = 2L) by default since this is what is used in the original paper on Affity Propagation clustering. The predict method computes the closest cluster exemplar to find the cluster memberships for new data. The code is taken from StackOverflow answer by the apcluster package maintainer.

Dictionary

This Learner can be instantiated via the dictionary mlr_learners or with the associated sugar function lrn():

mlr_learners$get("clust.ap")
lrn("clust.ap")

Meta Information

• Task type: “clust”

• Predict Types: “partition”

• Feature Types: “logical”, “integer”, “numeric”

• Required Packages: mlr3, mlr3cluster, apcluster

Parameters

Id	Type	Default	Levels	Range
s	untyped	apcluster::negDistMat, 2		-
p	untyped	NA		-
q	numeric	-		\([0, 1]\)
maxits	integer	1000		\([1, \infty)\)
convits	integer	100		\([1, \infty)\)
lam	numeric	0.9		\([0.5, 1]\)
includeSim	logical	FALSE	TRUE, FALSE	-
details	logical	FALSE	TRUE, FALSE	-
nonoise	logical	FALSE	TRUE, FALSE	-
seed	integer	-		\((-\infty, \infty)\)

Super classes

mlr3::Learner -> mlr3cluster::LearnerClust -> LearnerClustAP

Methods

Public methods

• LearnerClustAP$new()

• LearnerClustAP$clone()

Inherited methods

• mlr3::Learner$base_learner()
• mlr3::Learner$format()
• mlr3::Learner$help()
• mlr3::Learner$predict()
• mlr3::Learner$predict_newdata()
• mlr3::Learner$print()
• mlr3::Learner$train()
• mlr3cluster::LearnerClust$reset()

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Method new()

Creates a new instance of this R6 class.

Usage

LearnerClustAP$new()

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Method clone()

The objects of this class are cloneable with this method.

Usage

LearnerClustAP$clone(deep = FALSE)

Arguments

deep

Whether to make a deep clone.

Examples

if (requireNamespace("apcluster")) {
  learner = mlr3::lrn("clust.ap")
  print(learner)

  # available parameters:
  learner$param_set$ids()
}
#> <LearnerClustAP:clust.ap>: Affinity Propagation Clustering
#> * Model: -
#> * Parameters: s=<function>
#> * Packages: mlr3, mlr3cluster, apcluster
#> * Predict Types:  [partition]
#> * Feature Types: logical, integer, numeric
#> * Properties: complete, exclusive, partitional
#>  [1] "s"          "p"          "q"          "maxits"     "convits"   
#>  [6] "lam"        "includeSim" "details"    "nonoise"    "seed"