Optimized canary examples, crafted by metagradient descent on a small non-private model, more than double empirical epsilon lower bounds in black-box DP-SGD privacy audits on CIFAR-10.
Meta-learning with implicit gradients
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Optimizing Canaries for Privacy Auditing with Metagradient Descent
Optimized canary examples, crafted by metagradient descent on a small non-private model, more than double empirical epsilon lower bounds in black-box DP-SGD privacy audits on CIFAR-10.