Load and return the German Breast Cancer Study Group 2 dataset
The dataset has 686 samples and 8 features. The endpoint is recurrence free survival, which occurred for 299 patients (43.6%).
x (pandas.DataFrame) – The measurements for each patient.
y (structured array with 2 fields) – cens: boolean indicating whether the endpoint has been reached or the event time is right censored.
time: total length of follow-up