Friedman1 Regression Task Generator

A TaskGenerator for the friedman1 task in mlbench::mlbench.friedman1().

Dictionary

This TaskGenerator can be instantiated via the dictionary mlr_task_generators or with the associated sugar function tgen():

mlr_task_generators$get("friedman1")
tgen("friedman1")

Parameters

Id	Type	Default	Range
sd	numeric	1	\([0, \infty)\)

See also

• Dictionary of TaskGenerators: mlr_task_generators

• as.data.table(mlr_task_generators) for a table of available TaskGenerators in the running session (depending on the loaded packages).

• Extension packages for additional task types:

  • mlr3proba for probabilistic supervised regression and survival analysis.

  • mlr3cluster for unsupervised clustering.

Other TaskGenerator: TaskGenerator, mlr_task_generators, mlr_task_generators_2dnormals, mlr_task_generators_cassini, mlr_task_generators_circle, mlr_task_generators_moons, mlr_task_generators_peak, mlr_task_generators_simplex, mlr_task_generators_smiley, mlr_task_generators_spirals, mlr_task_generators_xor

Super class

TaskGenerator -> TaskGeneratorFriedman1

Methods

Public methods

• TaskGeneratorFriedman1$new()

• TaskGeneratorFriedman1$clone()

Inherited methods

• TaskGenerator$format()
• TaskGenerator$generate()
• TaskGenerator$print()

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TaskGeneratorFriedman1$new()

Creates a new instance of this R6 class.

Usage

TaskGeneratorFriedman1$new()

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TaskGeneratorFriedman1$clone()

The objects of this class are cloneable with this method.

Usage

TaskGeneratorFriedman1$clone(deep = FALSE)

Arguments

deep

Whether to make a deep clone.

Examples

generator = tgen("friedman1")
task = generator$generate(200)
str(task$data())
#> Classes ‘data.table’ and 'data.frame':	200 obs. of  11 variables:
#>  $ y           : num  9.27 20.83 18.4 11.69 11.16 ...
#>  $ important1  : num  0.16 0.985 0.975 0.283 0.759 ...
#>  $ important2  : num  0.4925 0.626 0.3333 0.0744 0.3592 ...
#>  $ important3  : num  0.781 0.953 0.283 0.578 0.479 ...
#>  $ important4  : num  0.0694 0.4687 0.6799 0.7998 0.1656 ...
#>  $ important5  : num  0.8134 0.6392 0.5229 0.6678 0.0114 ...
#>  $ unimportant1: num  0.717 0.731 0.488 0.227 0.716 ...
#>  $ unimportant2: num  0.763 0.781 0.7 0.215 0.532 ...
#>  $ unimportant3: num  0.0907 0.7095 0.6861 0.7796 0.9294 ...
#>  $ unimportant4: num  0.488 0.892 0.73 0.718 0.442 ...
#>  $ unimportant5: num  0.4032 0.6818 0.3526 0.3242 0.0449 ...
#>  - attr(*, ".internal.selfref")=<pointer: 0x556fb9879ea0>