Title
How Private Are Commonly-Used Voting Rules?
Abstract
Differential privacy has been widely applied to provide privacy guarantees by adding random noise to the function output. However, it inevitably fails in many high-stakes voting scenarios, where voting rules are required to be deterministic. In this work, we present the first framework for answering the question: \"How private are commonly-used voting rules?\" Our answers are two-fold. First, we show that deterministic voting rules provide sufficient privacy in the sense of distributional differential privacy (DDP). We show that assuming the adversarial observer has uncertainty about individual votes, even publishing the histogram of votes achieves good DDP. Second, we introduce the notion of exact privacy to compare the privacy preserved in various commonly-studied voting rules, and obtain dichotomy theorems of exact DDP within a large subset of voting rules called generalized scoring rules.
Year
Venue
DocType
2020
UAI
Conference
Volume
Citations 
PageRank 
2021
0
0.34
References 
Authors
0
4
Name
Order
Citations
PageRank
Ao Liu13511.59
Yun Lu21611.51
Lirong Xia3103486.84
Vassilis Zikas418417.87