Awareness of Voter Passion Greatly Improves the Distortion of Metric Social Choice

25 Jun 2019Ben AbramowitzElliot AnshelevichWennan Zhu

We develop new voting mechanisms for the case when voters and candidates are located in an arbitrary unknown metric space, and the goal is to choose a candidate minimizing social cost: the total distance from the voters to this candidate. Previous work has often assumed that only ordinal preferences of the voters are known (instead of their true costs), and focused on minimizing distortion: the quality of the chosen candidate as compared with the best possible candidate... (read more)

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