Comments (2)
library(mlr3)
l = lrn("classif.rpart")
unlockBinding("train", l)
attributes(l$train)
#> $srcref
#> function(task, row_ids = NULL) {
#> task = assert_task(as_task(task))
#> assert_learnable(task, self)
#> row_ids = assert_row_ids(row_ids, null.ok = TRUE)
#>
#> if (!is.null(self$hotstart_stack)) {
#> # search for hotstart learner
#> start_learner = get_private(self$hotstart_stack)$.start_learner(self, task$hash)
#> }
#> if (is.null(self$hotstart_stack) || is.null(start_learner)) {
#> # no hotstart learners stored or no adaptable model found
#> learner = self
#> mode = "train"
#> } else {
#> self$state = start_learner$clone()$state
#> learner = self
#> mode = "hotstart"
#> }
#>
#> train_row_ids = if (!is.null(row_ids)) row_ids else task$row_roles$use
#> test_row_ids = task$row_roles$test
#>
#> learner_train(learner, task, train_row_ids = train_row_ids, test_row_ids = test_row_ids, mode = mode)
#>
#> # store the task w/o the data
#> self$state$train_task = task_rm_backend(task$clone(deep = TRUE))
#>
#> invisible(self)
#> }
l$train = removeSource(lrn("classif.rpart")$train)
l$train
#> function (task, row_ids = NULL)
#> .__Learner__train(self = self, private = private, super = super,
#> task = task, row_ids = row_ids)
#> <environment: 0x55ea67e47dd8>
Created on 2023-09-14 with reprex v2.0.2
from mlr3misc.
Fixed via #89
from mlr3misc.
Related Issues (20)
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from mlr3misc.