Bridging the Gap: Differentially Private Equivariant Deep Learning for Medical Image Analysis

9 Sep 2022  ·  Florian A. Hölzl, Daniel Rueckert, Georgios Kaissis ·

Machine learning with formal privacy-preserving techniques like Differential Privacy (DP) allows one to derive valuable insights from sensitive medical imaging data while promising to protect patient privacy, but it usually comes at a sharp privacy-utility trade-off. In this work, we propose to use steerable equivariant convolutional networks for medical image analysis with DP. Their improved feature quality and parameter efficiency yield remarkable accuracy gains, narrowing the privacy-utility gap.

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