AI & ML Research 3 Hours

Last updated: August 14, 2026, 11:42 AM ET

AI & ML Research

A recent post on Towards Data Science detailed how a car price prediction model achieved an artificially inflated R-squared score of twelve points due to a preprocessing pipeline that inadvertently allowed it to "peek" at the test data. This highlights a common pitfall in machine learning development where data leakage can significantly skew evaluation metrics.