Computer Science > Cryptography and Security
arXiv:2209.10908 (cs)
[Submitted on 22 Sep 2022]
Title:Improving Utility for Privacy-Preserving Analysis of Correlated Columns using Pufferfish Privacy
View a PDF of the paper titled Improving Utility for Privacy-Preserving Analysis of Correlated Columns using Pufferfish Privacy, by Krystal Maughan and 1 other authors
View PDFAbstract:Surveys are an important tool for many areas of social science research, but privacy concerns can complicate the collection and analysis of survey data. Differentially private analyses of survey data can address these concerns, but at the cost of accuracy - especially for high-dimensional statistics. We present a novel privacy mechanism, the Tabular DDP Mechanism, designed for high-dimensional statistics with incomplete correlation. The Tabular DDP Mechanism satisfies dependent differential privacy, a variant of Pufferfish privacy; it works by building a causal model of the sensitive data, then calibrating noise to the level of correlation between statistics. An empirical evaluation on survey data shows that the Tabular DDP Mechanism can significantly improve accuracy over the Laplace mechanism.
| Subjects: | Cryptography and Security (cs.CR) |
| Cite as: | arXiv:2209.10908 [cs.CR] |
| (orarXiv:2209.10908v1 [cs.CR] for this version) | |
| https://doi.org/10.48550/arXiv.2209.10908 arXiv-issued DOI via DataCite |
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View a PDF of the paper titled Improving Utility for Privacy-Preserving Analysis of Correlated Columns using Pufferfish Privacy, by Krystal Maughan and 1 other authors
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