CS Events

Qualifying Exam Informed Group Decision Making via Voting
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Speaker: Qishen Han

Location : CoRE 305

Committee: 

Professor Lirong Xia

Professor David Pennock

Assistant Kangning Wang

Assistant Professor Minsung Kim

Event Type: Qualifying Exam

Abstract: In our fast-paced, engaged, polarized, and increasingly on-line world full of both misinformation campaigns and conspiracy theories, there is an emerging public need for informed, fair, efficient, and incentive-aware group decisions in uncertain environments. Leveraging the wisdom of the crowd, we see voting as a powerful tool to solve this problem. Specifically, we would like to focus on scenarios where agents are strategic. Previous work has shown that an informed decision (a decision be made if there is no uncertainty) can still be reached with high probability in the equilibrium. We would like to take steps further in this topic, including discovering representation of knowledge and preferences, analyzing different voting rules and aggregation mechanisms, and balancing between accuracy and simplicity in the votes.

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Contact  Professor Lirong Xia

Related Publications:
[1] Marquis de Condorcet. 1785. Essai sur l’application de l’analyse à la probabilité des décisions rendues à la pluralité des voix. Paris: L’Imprimerie Royale.
[2] David Austen-Smith and Jeffrey S. Banks. 1996. Information Aggregation, Rationality, and the Condorcet Jury Theorem. The American Political Science Review 90, 1 (1996), 34–45.
[3] Timothy Feddersen and Wolfgang Pesendorfer. 1997. Voting Behavior and Information Aggregation in Elections With Private Information. Econometrica 65, 5 (1997), 1029–1058.
[4] Jörgen Wit. 1998. Rational Choice and the Condorcet Jury Theorem. Games and Economic Behavior 22, 2 (1998), 364—376.
[5] Grant Schoenebeck and Biaoshuai Tao. 2021. Wisdom of the Crowd Voting: Truthful Aggregation of Voter Information and
Preferences. In Advances in Neural Information Processing Systems, Vol. 34. Curran Associates, Inc., 1872–1883.
[6] Qishen Han, Grant Schoenebeck, Biaoshuai Tao, and Lirong Xia. The Wisdom of Strategic Voting. In Proceedings of the 24th ACM Conference on Economics and Computation, 885 - 905.
[7] Qishen Han, Grant Schoenebeck, Biaoshuai Tao, and Lirong Xia. The Art of Two-round Voting. Under Review.