Which of the following is not an example of feature leakage

Last updated: 8/1/2023

Which of the following is not an example of feature leakage Using the Thank You page that follows a Purchase page as a feature when predicting purchases from web browsing logs Using previous searches to predict whether or not someone intends to buy a car When predicting whether or not a visitor to Netflix will start a subscription using account number as a feature When predicting whether or not a patient has a certain medical condition based on symptoms and other diagnostics using treatments for that disease as a feature Treatments are only applied after diagnosis is made so this it not a valid feature