What if I need to do data pre-processing on the "test" data set? I have a train and test data set as well, and in production, I would want to add some pre-processing steps that would apply to my "real data" before the modeling nodes run. I'm trying to append my train and test data sets but it doesn't output as one file when I use stat explore or other nodes following. I want to do all of the pre-processing on both the train and test data set to handle missing values, create features, etc. before running through a regression node or decision tree, etc. I'm also a newb but can't seem to figure this out.
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