@inproceedings{
pardeshi2024learning,
title={Learning Social Welfare Functions},
author={Kanad Shrikar Pardeshi and Itai Shapira and Ariel D. Procaccia and Aarti Singh},
booktitle={The Thirty-eighth Annual Conference on Neural Information Processing Systems},
year={2024},
url={https://openreview.net/forum?id=7O6KtaAr8n}
}
Is it possible to understand or imitate a policy maker's rationale by looking at past decisions they made? We formalize this question as the problem of learning social welfare functions belonging to the well-studied family of power mean functions. We focus on two learning tasks; in the first, the input is vectors of utilities of an action (decision or policy) for individuals in a group and their associated social welfare as judged by a policy maker, whereas in the second, the input is pairwise comparisons between the welfares associated with a given pair of utility vectors. We show that power mean functions are learnable with polynomial sample complexity in both cases, even if the social welfare information is noisy. Finally, we design practical algorithms for these tasks and evaluate their performance.
Learning Social Welfare Functions
Kanad Shrikar Pardeshi Itai Shapira Ariel D. Procaccia Aarti Singh