Primary Biliary Cholangitis Survival Task

A survival task for the pbc data set.

Format

R6::R6Class inheriting from TaskSurv.

Dictionary

This Task can be instantiated via the dictionary mlr_tasks or with the associated sugar function tsk():

mlr_tasks$get("pbc")
tsk("pbc")

Meta Information

• Task type: “surv”

• Dimensions: 276x19

• Properties: -

• Has Missings: FALSE

• Target: “time”, “status”

• Features: “age”, “albumin”, “alk.phos”, “ascites”, “ast”, “bili”, “chol”, “copper”, “edema”, “hepato”, “platelet”, “protime”, “sex”, “spiders”, “stage”, “trig”, “trt”

Pre-processing

• Removed column id.

• Kept only complete cases (no missing values).

• Column age has been converted to integer.

• Columns trt, stage, hepato, edema and ascites have been converted to factors.

• Column trt has levels Dpenicillmain and placebo instead of 1 and 2.

• Column status has 1 for death and 0 for censored or transplant.

See also

• Chapter in the mlr3book: https://mlr3book.mlr-org.com/chapters/chapter2/data_and_basic_modeling.html

• Dictionary of Tasks: mlr3::mlr_tasks

• as.data.table(mlr_tasks) for a table of available Tasks in the running session

Other Task: TaskDens, TaskSurv, mlr_tasks_actg, mlr_tasks_faithful, mlr_tasks_gbcs, mlr_tasks_gbsg, mlr_tasks_grace, mlr_tasks_lung, mlr_tasks_mgus, mlr_tasks_precip, mlr_tasks_rats, mlr_tasks_unemployment, mlr_tasks_veteran, mlr_tasks_whas