Classification Bayes Network Learner

Bayes Network learning using various search algorithms. Calls RWeka::make_Weka_classifier() from RWeka.

Custom mlr3 parameters

• output_debug_info:

  • original id: output-debug-info

• do_not_check_capabilities:

  • original id: do-not-check-capabilities

• num_decimal_places:

  • original id: num-decimal-places

• batch_size:

  • original id: batch-size

• Reason for change: This learner contains changed ids of the following control arguments since their ids contain irregular pattern

• N removed:

  • Initial structure is empty

• P removed:

  • Maximum number of parents

• R removed:

  • Random order

• mbc removed:

  • Applies a Markov Blanket correction to the network structure, after a network structure is learned

• S removed:

  • Score type

• A removed:

  • Initial count (alpha)

• Reason for change: The parameters are removed because they don't work out of the box and it's unclear how to use them.

Dictionary

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

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

Meta Information

• Task type: “classif”

• Predict Types: “response”, “prob”

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

• Required Packages: mlr3, RWeka

Parameters

Id	Type	Default	Levels	Range
subset	untyped	-		-
na.action	untyped	-		-
D	logical	-	TRUE, FALSE	-
B	untyped	-		-
Q	character	-	global.K2, global.HillClimber, global.SimulatedAnnealing, global.TabuSearch, global.TAN, local.K2, local.HillClimber, local.LAGDHillClimber, local.SimulatedAnnealing, local.TabuSearch, ...	-
E	character	-	estimate.SimpleEstimator, estimate.BMAEstimator, estimate.MultiNomialBMAEstimator	-
output_debug_info	logical	FALSE	TRUE, FALSE	-
do_not_check_capabilities	logical	FALSE	TRUE, FALSE	-
num_decimal_places	integer	2		\([1, \infty)\)
batch_size	integer	100		\([1, \infty)\)
options	untyped	NULL		-

See also

• Dictionary of Learners: mlr3::mlr_learners.

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

• Chapter in the mlr3book: https://mlr3book.mlr-org.com/basics.html#learners

• mlr3learners for a selection of recommended learners.

• mlr3cluster for unsupervised clustering learners.

• mlr3pipelines to combine learners with pre- and postprocessing steps.

• mlr3tuning for tuning of hyperparameters, mlr3tuningspaces for established default tuning spaces.

Author

damirpolat

Super classes

mlr3::Learner -> mlr3::LearnerClassif -> LearnerClassifBayesNet

Methods

Public methods

• LearnerClassifBayesNet$new()

• LearnerClassifBayesNet$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$reset()
• mlr3::Learner$train()

---

Method new()

Creates a new instance of this R6 class.

Usage

LearnerClassifBayesNet$new()

---

Method clone()

The objects of this class are cloneable with this method.

Usage

LearnerClassifBayesNet$clone(deep = FALSE)

Arguments

deep

Whether to make a deep clone.

Examples

learner = mlr3::lrn("classif.bayes_net")
print(learner)
#> <LearnerClassifBayesNet:classif.bayes_net>: Bayes Network
#> * Model: -
#> * Parameters: list()
#> * Packages: mlr3, RWeka
#> * Predict Types:  [response], prob
#> * Feature Types: logical, integer, numeric, factor, ordered
#> * Properties: missings, multiclass, twoclass

# available parameters:
learner$param_set$ids()
#>  [1] "subset"                    "na.action"                
#>  [3] "D"                         "B"                        
#>  [5] "Q"                         "E"                        
#>  [7] "output_debug_info"         "do_not_check_capabilities"
#>  [9] "num_decimal_places"        "batch_size"               
#> [11] "options"