Density-Based Clustering Learner with fpc

A LearnerClust for density-based clustering implemented in fpc::dbscan(). The predict method uses fpc::predict.dbscan() to compute the cluster memberships for new data.

Dictionary

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

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

Meta Information

• Task type: “clust”

• Predict Types: “partition”

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

• Required Packages: mlr3, mlr3cluster, fpc

Parameters

Id	Type	Default	Levels	Range
eps	numeric	-		\([0, \infty)\)
MinPts	integer	5		\([0, \infty)\)
scale	logical	FALSE	TRUE, FALSE	-
method	character	-	hybrid, raw, dist	-
seeds	logical	TRUE	TRUE, FALSE	-
showplot	untyped	FALSE		-
countmode	untyped			-

Super classes

mlr3::Learner -> mlr3cluster::LearnerClust -> LearnerClustDBSCANfpc

Methods

Public methods

• LearnerClustDBSCANfpc$new()

• LearnerClustDBSCANfpc$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

LearnerClustDBSCANfpc$new()

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Method clone()

The objects of this class are cloneable with this method.

Usage

LearnerClustDBSCANfpc$clone(deep = FALSE)

Arguments

deep

Whether to make a deep clone.

Examples

if (requireNamespace("fpc")) {
  learner = mlr3::lrn("clust.dbscan_fpc")
  print(learner)

  # available parameters:
  learner$param_set$ids()
}
#> <LearnerClustDBSCANfpc:clust.dbscan_fpc>: Density-Based Clustering with fpc
#> * Model: -
#> * Parameters: MinPts=5, scale=FALSE, seeds=TRUE, showplot=FALSE
#> * Packages: mlr3, mlr3cluster, fpc
#> * Predict Types:  [partition]
#> * Feature Types: logical, integer, numeric
#> * Properties: complete, exclusive, partitional
#> [1] "eps"       "MinPts"    "scale"     "method"    "seeds"     "showplot" 
#> [7] "countmode"