Unsupervised Task
This is the abstract base class for unsupervised tasks such as cluster tasks in list("mlr3cluster") and list("mlr3spatial").
TaskUnsupervised$new("penguins", task_type = "regr", backend = palmerpenguins::penguins)
Chapter in the mlr3book: https://mlr3book.mlr-org.com/chapters/chapter2/data_and_basic_modeling.html
Package list("mlr3data") for more toy tasks.
Package list("mlr3oml") for downloading tasks from https://www.openml.org.
Package list("mlr3viz") for some generic visualizations.
Dictionary of Tasks : mlr_tasks
as.data.table(mlr_tasks) for a table of available Tasks in the running session (depending on the loaded packages).
list("mlr3fselect") and list("mlr3filters") for feature selection and feature filtering.
Extension packages for additional task types:
Other Task: Task, TaskClassif, TaskRegr, TaskSupervised, california_housing, mlr_tasks, mlr_tasks_breast_cancer, mlr_tasks_german_credit, mlr_tasks_iris, mlr_tasks_mtcars, mlr_tasks_penguins, mlr_tasks_pima, mlr_tasks_sonar, mlr_tasks_spam, mlr_tasks_wine, mlr_tasks_zoo
mlr3::Task -> TaskUnsupervised
new()Creates a new instance of this R6 class.
TaskUnsupervised$new(
id,
task_type = "unsupervised",
backend,
label = NA_character_,
extra_args = list()
)
id: (character(1))
Identifier for the new instance.
task_type: (character(1))
Type of task, e.g. `"regr"` or `"classif"`. Must be an element of mlr_reflections$task_types$type .
backend: (DataBackend )
Either a DataBackend , or any object which is convertible to a DataBackend with `as_data_backend()`. E.g., a `data.frame()` will be converted to a DataBackendDataTable .
label: (character(1))
Label for the new instance.
extra_args: (named list())
Named list of constructor arguments, required for converting task types via `convert_task()`.
clone()The objects of this class are cloneable with this method.
TaskUnsupervised$clone(deep = FALSE)
deep: Whether to make a deep clone.
Useful links