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- W4386874845 abstract "How to properly set the privacy parameter in differential privacy (DP) has been an open question in DP research since it was first proposed in 2006. In this work, we demonstrate the ability of influence functions to offer insight into how a specific privacy parameter value will affect a model's test loss in the randomized response-based local DP setting. Our proposed method allows a data curator to select the privacy parameter best aligned with their allowed privacy-utility trade-off without requiring heavy computation such as extensive model retraining and data privatization. We consider multiple common randomization scenarios, such as performing randomized response over the features, and/or over the labels, as well as the more complex case of applying a class-dependent label noise correction method to offset the noise incurred by randomization. Further, we provide a detailed discussion over the computational complexity of our proposed approach inclusive of an empirical analysis. Through empirical evaluations we show that for both binary and multi-class settings, influence functions are able to approximate the true change in test loss that occurs when randomized response is applied over features and/or labels with small mean absolute error, especially in cases where noise correction methods are applied." @default.
- W4386874845 created "2023-09-20" @default.
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- W4386874845 date "2023-09-15" @default.
- W4386874845 modified "2023-09-27" @default.
- W4386874845 title "Evaluating the Impact of Local Differential Privacy on Utility Loss via Influence Functions" @default.
- W4386874845 doi "https://doi.org/10.48550/arxiv.2309.08678" @default.
- W4386874845 hasPublicationYear "2023" @default.
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