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On the Connection between Invariant Learning and Adversarial Training for Out-of-Distribution Generalization

AAAI 2023 · Label-efficient and robust learning › OOD and anomaly detection · approach: Out-of-distribution generalization theory · 7 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
use domain-wise adversarial perturbations instead of ERMimage-classification domain generalization · CMNIST and NICOtest accuracy (%): 58.5 ± 0.3 -> 68.4 ± 2.0 (CMNIST); 72.1 ± 1.6 -> 72.6 ± 1.7 (NICO)Helped
use domain-wise adversarial perturbations instead of ERMimage-classification domain generalization · PACS and TerraInctest accuracy (%): 81.5\pm 0.0 -> 82.0 \pm 0.1 (PACS); 42.6 \pm 0.9 -> 42.7 \pm 0.7 (TerraInc)Mixed
use DAT instead of ERMsingle-source domain generalization · CMNIST, NICO, PACS, TerraIncaverage test accuracy (%): 45.8 ± 0.7 -> 46.0\pm 2.0; 63.2\pm 2.9 -> 64.4\pm 0.7; 59.8\pm 1.6 -> 59.9\pm 2.4; 27.3 \pm 4.0 -> 28.1\pm 4.0Helped
use DAT instead of ERMsingle-source Digits generalization · Digits averageaccuracy (%): 49.29 -> 52.1Helped
generate domain-specific perturbations rather than one universal perturbation per model (ablation)multi-domain adversarial generalization · CMNIST and NICOtest accuracy (%): 58.7 \pm 2.3 -> 68.4 \pm 2.0 (CMNIST); 69.1 \pm 1.2 -> 72.6 \pm 1.7 (NICO)Helped
replace DAT with an ensemble of single-domain UAT models (ablation)multi-domain adversarial generalization · CMNIST and NICOtest accuracy (%): 68.4 \pm 2.0 -> 58.2 \pm 2.3 (CMNIST); 72.6 \pm 1.7 -> 60.8 \pm 0.2 (NICO)Hurt
increase DAT perturbation radius beyond 10^-1 (ablation)DAT · NICOtest accuracy (%): 72.9% to 67.9%Hurt
increase the perturbation step size within the tested radius [10^-2, 10^-1] (ablation)DAT · NICOtest accuracy (%): 72.6 \pm 1.7 -> 72.0 \pm 2.1 -> 68.9 \pm 1.5Hurt
use ℓ∞ rather than ℓ2 perturbations with radius [10^-1, 10^0] (ablation)DAT · NICOtest accuracy (%): 72.6 \pm 1.7 -> 72.5 \pm 1.6No clear effect
increase batch size used to estimate domain-level perturbation updates (ablation)DAT · PACStest accuracyHelped
use DAT rather than ERMbackground-shift classification · Mixed-Rand test, Mixed-Same trainingtest accuracy (%): 71.9% -> 72.6%Helped

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