Worcester Heart Attack Study (WHAS) Survival Task

A survival task for the whas 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("whas")
tsk("whas")

Meta Information

• Task type: “surv”

• Dimensions: 481x11

• Properties: -

• Has Missings: FALSE

• Target: “time”, “status”

• Features: “age”, “chf”, “cpk”, “lenstay”, “miord”, “mitype”, “sexF”, “sho”, “year”

Preprocessing

• Columns id, yrgrp, and dstat are removed.

• Column sex is renamed to sexF, lenfol to time, and fstat to status.

• Target is total follow-up time from hospital admission.

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_veteran