Human Computer Interaction, Artificial Intelligence and Intelligent Augmentation
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Paper Type
short
Paper Number
1533
Description
This paper is about devising customized treatment assignment policies (from data) when there is a lot of observational data, but much less (unconfounded) experimental data. We propose to use (large) observational data to learn a complex treatment assignment policy with few supervised learning errors, and then correct for confounding errors in the policy using a (machine learned) model built with both experimental and observational data. Our study details a tree-induction algorithm that may be used to learn the model that corrects for confounding, which we call the deconfounder tree. Finally, we illustrate with a simple example how our approach may lead to better treatment assignments than learning models using exclusively observational or experimental data.
Recommended Citation
Fernández-Loría, Carlos and Provost, Foster, "Combining Observational and Experimental Data to Improve Large-Scale Decision-Making" (2020). ICIS 2020 Proceedings. 7.
https://aisel.aisnet.org/icis2020/hci_artintel/hci_artintel/7
Combining Observational and Experimental Data to Improve Large-Scale Decision-Making
This paper is about devising customized treatment assignment policies (from data) when there is a lot of observational data, but much less (unconfounded) experimental data. We propose to use (large) observational data to learn a complex treatment assignment policy with few supervised learning errors, and then correct for confounding errors in the policy using a (machine learned) model built with both experimental and observational data. Our study details a tree-induction algorithm that may be used to learn the model that corrects for confounding, which we call the deconfounder tree. Finally, we illustrate with a simple example how our approach may lead to better treatment assignments than learning models using exclusively observational or experimental data.
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