How to Detect Hidden Target Leakage in Public Datasets with Python and a Dependency Graph

Some time ago, I gave a machine learning model five columns from a public CDC dataset and asked it to predict a sixth column from the same file. The model scored an R² of 0.998, which is about as close to perfect as a real model gets. That score looked like a success, but the model had learned very little about the real world. CDC had calculated... Weiterlesen