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Support vector machine for classification. Calls e1071::svm() from package e1071.

Dictionary

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

mlr_learners$get("classif.svm")
lrn("classif.svm")

Meta Information

  • Task type: “classif”

  • Predict Types: “response”, “prob”

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

  • Required Packages: mlr3, mlr3learners, e1071

Parameters

IdTypeDefaultLevelsRange
cachesizenumeric40\((-\infty, \infty)\)
class.weightsuntyped-
coef0numeric0\((-\infty, \infty)\)
costnumeric1\([0, \infty)\)
crossinteger0\([0, \infty)\)
decision.valueslogicalFALSETRUE, FALSE-
degreeinteger3\([1, \infty)\)
epsilonnumeric0.1\([0, \infty)\)
fittedlogicalTRUETRUE, FALSE-
gammanumeric-\([0, \infty)\)
kernelcharacterradiallinear, polynomial, radial, sigmoid-
nunumeric0.5\((-\infty, \infty)\)
scaleuntypedTRUE-
shrinkinglogicalTRUETRUE, FALSE-
tolerancenumeric0.001\([0, \infty)\)
typecharacterC-classificationC-classification, nu-classification-

References

Cortes, Corinna, Vapnik, Vladimir (1995). “Support-vector networks.” Machine Learning, 20(3), 273--297. doi:10.1007/BF00994018 .

See also

Other Learner: mlr_learners_classif.cv_glmnet, mlr_learners_classif.glmnet, mlr_learners_classif.kknn, mlr_learners_classif.lda, mlr_learners_classif.log_reg, mlr_learners_classif.multinom, mlr_learners_classif.naive_bayes, mlr_learners_classif.nnet, mlr_learners_classif.qda, mlr_learners_classif.ranger, mlr_learners_classif.xgboost, mlr_learners_regr.cv_glmnet, mlr_learners_regr.glmnet, mlr_learners_regr.kknn, mlr_learners_regr.km, mlr_learners_regr.lm, mlr_learners_regr.nnet, mlr_learners_regr.ranger, mlr_learners_regr.svm, mlr_learners_regr.xgboost

Super classes

mlr3::Learner -> mlr3::LearnerClassif -> LearnerClassifSVM

Methods

Inherited methods


Method new()

Creates a new instance of this R6 class.

Usage


Method clone()

The objects of this class are cloneable with this method.

Usage

LearnerClassifSVM$clone(deep = FALSE)

Arguments

deep

Whether to make a deep clone.

Examples

if (requireNamespace("e1071", quietly = TRUE)) {
  learner = mlr3::lrn("classif.svm")
  print(learner)

  # available parameters:
learner$param_set$ids()
}
#> <LearnerClassifSVM:classif.svm>: Support Vector Machine
#> * Model: -
#> * Parameters: list()
#> * Packages: mlr3, mlr3learners, e1071
#> * Predict Types:  [response], prob
#> * Feature Types: logical, integer, numeric
#> * Properties: multiclass, twoclass
#>  [1] "cachesize"       "class.weights"   "coef0"           "cost"           
#>  [5] "cross"           "decision.values" "degree"          "epsilon"        
#>  [9] "fitted"          "gamma"           "kernel"          "nu"             
#> [13] "scale"           "shrinking"       "tolerance"       "type"