偏好变化下的社会选择：表示定理与长期政策
Social Choice with Changing Preferences: Representation Theorems and Long-Run Policies
摘要：
本文将偏好变化的群体决策过程作为一个马尔可夫决策过程进行研究。随着时间的推移，自动决策系统在为人群做出选择时越来越普遍。我们的主要贡献是展示如何从社会选择理论的经典表示定理可以适应在这个动态设置的最优政策的特点。我们提供了一个公理化的MDP奖励功能，同意社会选择理论的功利主义社会福利泛函的特征。我们还提供了讨论的情况下，社会选择理论公理的实施可能无法导致长期的最佳结果。
英文摘要：
We study group decision making with changing preferences as a Markov Decision Process. We are motivated by the increasing prevalence of automated decision-making systems when making choices for groups of people over time. Our main contribution is to show how classic representation theorems from social choice theory can be adapted to characterize optimal policies in this dynamic setting. We provide an axiomatic characterization of MDP reward functions that agree with the Utilitarianism social welfare functionals of social choice theory. We also provide discussion of cases when the implementation of social choice-theoretic axioms may fail to lead to long-run optimal outcomes.
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