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econ.EM2025
Welfare at Risk: Distributionally Robust Bounds for Policy Evaluation
Costas Lambros, Emerson Melo
This paper develops a framework to study how the welfare effects of policy interventions are distributed across individuals when those effects are not directly observed. We bound t…
cs.LG2025
Beyond Softmax: A New Perspective on Gradient Bandits
Emerson Melo, David Müller
We establish a link between a class of discrete choice models and the theory of online learning and multi-armed bandits. Our contributions are: (i) sublinear regret bounds for a br…