Poster
Position: Considerations for Differentially Private Learning with Large-Scale Public Pretraining
Florian Tramer · Gautam Kamath · Nicholas Carlini
Hall C 4-9 #2406
Best Paper |
Tue 23 Jul 2:30 a.m. PDT
— 4 a.m. PDT
Tue 23 Jul 1:30 a.m. PDT — 2:30 a.m. PDT
Abstract:
The performance of differentially private machine learning can be boosted significantly by leveraging the transfer learning capabilities of non-private models pretrained on large public datasets. We critically review this approach. We primarily question whether the use of large Web-scraped datasets should be viewed as differential-privacy-preserving. We further scrutinize whether existing machine learning benchmarks are appropriate for measuring the ability of pretrained models to generalize to sensitive domains. Finally, we observe that reliance on large pretrained models may lose other forms of privacy, requiring data to be outsourced to a more compute-powerful third party.
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