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2. Learning to Ask Medical Questions using Reinforcement Learning

Author

Shaham, Uri, Zahavy, Tom, Caraballo, Cesar, Mahajan, Shiwani, Massey, Daisy, and Krumholz, Harlan

Subjects
Computer Science - Machine Learning, Computer Science - Artificial Intelligence, Statistics - Machine Learning
Abstract

We propose a novel reinforcement learning-based approach for adaptive and iterative feature selection. Given a masked vector of input features, a reinforcement learning agent iteratively selects certain features to be unmasked, and uses them to predict an outcome when it is sufficiently confident. The algorithm makes use of a novel environment setting, corresponding to a non-stationary Markov Decision Process. A key component of our approach is a guesser network, trained to predict the outcome from the selected features and parametrizing the reward function. Applying our method to a national survey dataset, we show that it not only outperforms strong baselines when requiring the prediction to be made based on a small number of input features, but is also highly more interpretable. Our code is publicly available at \url{https://github.com/ushaham/adaptiveFS}.

Published
2020

5. Evaluation of Temporal Trends in Racial and Ethnic Disparities in Sleep Duration Among US Adults, 2004-2018

Author

Caraballo, César, primary, Mahajan, Shiwani, additional, Valero-Elizondo, Javier, additional, Massey, Daisy, additional, Lu, Yuan, additional, Roy, Brita, additional, Riley, Carley, additional, Annapureddy, Amarnath R., additional, Murugiah, Karthik, additional, Elumn, Johanna, additional, Nasir, Khurram, additional, Nunez-Smith, Marcella, additional, Forman, Howard P., additional, Jackson, Chandra L., additional, Herrin, Jeph, additional, and Krumholz, Harlan M., additional

Published
2022
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9. Tracking Self-reported Symptoms and Medical Conditions on Social Media During the COVID-19 Pandemic: Infodemiological Study

Author

Ding, Qinglan, primary, Massey, Daisy, additional, Huang, Chenxi, additional, Grady, Connor B, additional, Lu, Yuan, additional, Cohen, Alina, additional, Matzner, Pini, additional, Mahajan, Shiwani, additional, Caraballo, César, additional, Kumar, Navin, additional, Xue, Yuchen, additional, Dreyer, Rachel, additional, Roy, Brita, additional, and Krumholz, Harlan M, additional

Published
2021
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10. Engagement With COVID-19 Public Health Measures in the United States: A Cross-sectional Social Media Analysis from June to November 2020

Author

Massey, Daisy, primary, Huang, Chenxi, additional, Lu, Yuan, additional, Cohen, Alina, additional, Oren, Yahel, additional, Moed, Tali, additional, Matzner, Pini, additional, Mahajan, Shiwani, additional, Caraballo, César, additional, Kumar, Navin, additional, Xue, Yuchen, additional, Ding, Qinglan, additional, Dreyer, Rachel, additional, Roy, Brita, additional, and Krumholz, Harlan, additional

Published
2021
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