“Decision-Aware Learning for Global Health Supply Chains” by Hamsa Bastani, University of Pennsylvania
\nSpeaker: Hamsa Bastani, University of Pennsylvania<\/p>\n
Date & Time: September 30, 2022, Friday 16:00<\/p>\n
***This is an online seminar. To obtain the event link, please send a message to department.<\/p>\n
Title: Decision-Aware Learning for Global Health Supply Chains<\/p>\n
Abstract: The combination of machine learning (for prediction) and
\noptimization (for decision-making) is increasingly used in practice.
\nHowever, a key challenge is the need to align the loss function used to
\ntrain the machine learning model with the decision loss associated with the
\ndownstream optimization problem. Traditional solutions have limited
\nflexibility in the model architecture and\/or scale poorly to large datasets.
\nWe propose a principled decision-aware learning algorithm that uses a novel
\nTaylor expansion of the optimal decision loss to derive the machine learning
\nloss. Importantly, our approach only requires a simple re-weighting of the
\ntraining data, allowing it to flexibly and scalably be incorporated into
\ncomplex modern data science pipelines, yet producing sizable efficiency
\ngains. We apply our framework to optimize the distribution of essential
\nmedicines in collaboration with policymakers at the Sierra Leone National
\nMedical Supplies Agency; highly uncertain demand and limited budgets
\ncurrently result in excessive unmet demand. We leverage random forests with
\nmeta-learning to learn complex cross-correlations across facilities, and
\napply our decision-aware learning approach to align the prediction loss with
\nthe objective of minimizing unmet demand. Out-of-sample results demonstrate
\nthat our end-to-end approach significantly reduces unmet demand across
\n1000+ health facilities throughout Sierra Leone. (Joint work with O.
\nBastani, T.-H. Chung and V. Rostami).<\/p>\n
Bio: Hamsa Bastani is an Assistant Professor of Operations, Information, and
\nDecisions at the Wharton School, University of Pennsylvania. Her research
\nfocuses on developing novel machine learning algorithms for data-driven
\ndecision-making, with applications to healthcare operations, social good,
\nand revenue management. Her work has received several recognitions,
\nincluding the Wagner Prize for Excellence in Practice (2021), the Pierskalla
\nAward for the best paper in healthcare (2016, 2019, 2021), the Behavioral OM
\nBest Paper Award (2021), as well as first place in the George Nicholson and
\nMSOM student paper competitions (2016).<\/p>\n","protected":false},"excerpt":{"rendered":"
“Decision-Aware Learning for Global Health Supply Chains” by Hamsa Bastani, University of Pennsylvania Speaker: Hamsa Bastani, University of Pennsylvania Date & Time: September 30, 2022, Friday 16:00 ***This is an online seminar. To obtain the event link, please send a message to department. Title: Decision-Aware Learning for Global Health Supply [\u2026] <\/p>\n