Differentially Private Deep Learning with Direct Feedback Alignment

• URL: http://arxiv.org/abs/2010.03701v1
• Date: Thu, 8 Oct 2020 00:25:22 GMT
• Title: Differentially Private Deep Learning with Direct Feedback Alignment
• Authors: Jaewoo Lee and Daniel Kifer
• Abstract summary: We propose the first differentially private method for training deep neural networks with direct feedback alignment (DFA) DFA achieves significant gains in accuracy (often by 10-20%) compared to backprop-based differentially private training on a variety of architectures.
• Score: 15.410557873153833
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Standard methods for differentially private training of deep neural networks replace back-propagated mini-batch gradients with biased and noisy approximations to the gradient. These modifications to training often result in a privacy-preserving model that is significantly less accurate than its non-private counterpart. We hypothesize that alternative training algorithms may be more amenable to differential privacy. Specifically, we examine the suitability of direct feedback alignment (DFA). We propose the first differentially private method for training deep neural networks with DFA and show that it achieves significant gains in accuracy (often by 10-20%) compared to backprop-based differentially private training on a variety of architectures (fully connected, convolutional) and datasets.

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