Question
Is it possible to create indicator variables (for each input) for missing values without actually imputing in Model Studio?
Answer
Yes, add Imputation node to the pipeline, change the following properties and run the node.
- Under Class Inputs, change Default method to none
- Under Interval Inputs, change Default method to none
- Under Indicators, (1) select Unique indicators check-box, (2) set Indicator subject to Missing variables and (3) set Indicator role to Input.
You will see that there is a new variable (with M_ prefix) for every input that has a missing value in the training data. This new variable takes 0 or 1 values to indicate missingness (0=not missing, 1=missing).
