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Backdoor Defense via Adaptively Splitting Poisoned Dataset

CVPR 2023 · Adversarial robustness and security › Backdoor and poisoning · approach: Training-time backdoor defense · 60 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Adaptively split training data into labeled clean and unlabeled polluted pools, then train with semi-supervisionResNet-18 · CIFAR-10, six-attack averageASR: 17.0 -> 1.1Helped
Add the meta-split stage to recover model-dependent clean hard samples (ablation)ASD · CIFAR-10, clean accuracyACC: about 80%Helped
Add stage 2 class-agnostic loss-guided split (ablation)ASD · CIFAR-10, four attacksACCHelped
Add stage 1 warming-up with progressively growing seed pool (ablation)ASD · CIFAR-10, four attacksACCHelped
Use class-agnostic rather than class-aware splitting in stage 1 (ablation)ASD · CIFAR-10, four attacksACCHurt
Use class-aware rather than class-agnostic splitting in stage 2 (ablation)ASD · CIFAR-10, BadNetsASR: 20%Hurt
Build the clean pool faster with smaller t and larger n (ablation)ASD stage 1 · CIFAR-10, especially WaNet and CLBACCHurt
Replace MixMatch with UDA (ablation)ASD · CIFAR-10, BadNetsACC: 93.4 -> 92.6No clear effect
Replace MixMatch with ReMixMatch (ablation)ASD · CIFAR-10, BadNetsACC: 93.4 -> 91.6No clear effect
Use 10 rather than 100 clean seed samples (ablation)ASD · CIFAR-10, BlendASR: 1.6 -> 99.1Hurt
Use 50 rather than 100 clean seed samples (ablation)ASD · CIFAR-10, BlendASR: 1.6 -> 10.4Hurt
Allow poisoned samples into the seed set (ablation)ASD · CIFAR-10, BlendASR: 1.6 -> 99.9Mixed

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