no code implementations • 16 Aug 2024 • Daniel de Marchi, Michael Kosorok, Scott de Marchi
Shapley values have seen widespread use in machine learning as a way to explain model predictions and estimate the importance of covariates.
1 code implementation • 31 Jan 2023 • Joshua P. Zitovsky, Daniel de Marchi, Rishabh Agarwal, Michael R. Kosorok
Offline model selection (OMS), that is, choosing the best policy from a set of many policies given only logged data, is crucial for applying offline RL in real-world settings.
no code implementations • 24 Jan 2023 • Daniel de Marchi, Matthew Welch, Michael Kosorok
In this paper we develop and present a novel theoretically justified hypothesis test of split quality for gradient boosted tree ensembles and demonstrate that using this method instead of the common penalty terms leads to a significant reduction in out of sample loss.
no code implementations • 9 Aug 2020 • Daniel de Marchi, Amarjit Budhiraja
One of the key steps in building deep learning systems for drug classification and generation is the choice of featurization for the molecules.