L2-Regularized Support Vector Regression Learner

Calls LiblineaR::LiblineaR from package LiblineaR.

Details

Type of SVR depends on type argument:

• type = 11 - L2-regularized L2-loss support vector regression (primal)

• type = 12 – L2-regularized L2-loss support vector regression (dual)

• type = 13 – L2-regularized L1-loss support vector regression (dual)

Dictionary

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

mlr_learners$get("regr.liblinear")
lrn("regr.liblinear")

Traits

• Packages: LiblineaR

• Predict Types: response

• Feature Types: integer, numeric

• Properties:

Custom mlr3 defaults

• svr_eps:

  • Actual default: NULL

  • Adjusted default: 0.001

  • Reason for change: svr_eps is type dependent and the "type" is handled by the mlr3learner. The default value is set to th default of the respective "type".

See also

Dictionary of Learners: mlr3::mlr_learners

Author

be-marc

Super classes

mlr3::Learner -> mlr3::LearnerRegr -> LearnerRegrLiblineaR

Methods

Public methods

• LearnerRegrLiblineaR$new()

• LearnerRegrLiblineaR$clone()

Inherited methods

• mlr3::Learner$format()

• mlr3::Learner$help()

• mlr3::Learner$predict()

• mlr3::Learner$predict_newdata()

• mlr3::Learner$print()

• mlr3::Learner$reset()

• mlr3::Learner$train()

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Method new()

Creates a new instance of this R6 class.

Usage

LearnerRegrLiblineaR$new()

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Method clone()

The objects of this class are cloneable with this method.

Usage

LearnerRegrLiblineaR$clone(deep = FALSE)

Arguments

deep

Whether to make a deep clone.

Examples

# stop example failing with warning if package not installed
learner = suppressWarnings(mlr3::lrn("regr.liblinear"))
print(learner)
#> <LearnerRegrLiblineaR:regr.liblinear>
#> * Model: -
#> * Parameters: svr_eps=0.001
#> * Packages: LiblineaR
#> * Predict Type: response
#> * Feature types: integer, numeric
#> * Properties: -

# available parameters:
learner$param_set$ids()
#> [1] "type"     "cost"     "bias"     "svr_eps"  "cross"    "verbose"  "findC"   
#> [8] "useInitC"