random-forestmlr3r-ranger

'classif.ranger' not found in DictionaryLearner

I am trying to implement the tuning space 'classif.ranger.rbv1' from mlr3tuningspaces

However, I am getting an error for the learner that the 'classif.ranger' is not found in the DictionaryLearner

I have tried two methods, shown below

tuning_space <- lts("classif.ranger.rbv1")
learner <- tuning_space$get_learner()

and

tuning_space <- lts("classif.ranger.rbv1")
learner <- lts(lrn("classif.ranger"))

and both lead to the error message

Error: Element with key 'classif.ranger' not found in DictionaryLearner!
Solution

  • You need to load mlr3learners first.

    One way import the central mlr3 packages is to include a:

    library(mlr3verse)

    at the top of your script.