I’m not closely familiar with this benchmark, but data leakage in machine learning can be way too easy to accidentally introduce even under the best of intentio

I’m not closely familiar with this benchmark, but data leakage in machine learning can be way too easy to accidentally introduce even under the best of intentions. It really does require diligence at every stage of experiment and model design to strictly firewall all test data from any and all training influence. So, not surprising when leakage breaks highly publicized benchmarks.