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DARTS-: Robustly Stepping out of Performance Collapse Without Indicators

ICLR 2021 · Architectures and efficiency › Neural architecture search · approach: Differentiable architecture search (DARTS) · 89 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Add a decaying auxiliary skip connection to DARTSDARTS · CIFAR-10 S0test error (%): 2.91$\pm$0.25 -> 2.63$\pm$0.07Helped
Add a decaying auxiliary skip connection to DARTSDARTS · CIFAR-100 S0test error (%): 20.58$\pm$0.44 -> 17.51$\pm$0.25Helped
Add a decaying auxiliary skip connectionDARTS · CIFAR-10 S1-S4test error (%): S1: 3.84 -> 2.68; S2: 4.85 -> 2.63; S3: 3.34 -> 2.42; S4: 7.20 -> 2.86Helped
Add a decaying auxiliary skip connectionDARTS · CIFAR-100 S1-S4test error (%): S1: 29.46 -> 22.41; S2: 26.05 -> 21.61; S3: 28.90 -> 21.13; S4: 22.85 -> 21.55Mixed
Add a decaying auxiliary skip connectionDARTS · ImageNet validation S5top-1 accuracy (%): 66.4\% -> 76.2\%Helped
Add DARTS- auxiliary skip to P-DARTS without its priorsP-DARTS · CIFAR-10 S0accuracy (%): 96.48$\pm$0.55 -> 97.28$\pm$0.04Helped
Add DARTS- auxiliary skip to PC-DARTS at K=2PC-DARTS · CIFAR-10 S0accuracy (%): 97.09$\pm$0.14 -> 97.35$\pm0.02$Helped
Use cosine or step decay instead of linear decay (ablation)DARTS- · CIFAR-10 S3accuracy (%): 97.33\%$\pm$0.09; 97.30\%No clear effect
Increase the initial auxiliary weight β₀ (ablation)DARTS- · CIFAR-10 S3test error (%): 4.58$\pm$1.3 (β₀=0) -> 2.65$\pm$0.04 (β₀=1)Helped
Replace the auxiliary skip with an identity-initialized learnable 1×1 projection (ablation)DARTS- · CIFAR-10 S3accuracy (%): 97.25\%$\pm$0.09Helped
Extend search to 200 epochs (ablation)DARTS- · CIFAR-10 S0test error (%): 2.59$\pm$0.08 -> 2.71$\pm$0.11Hurt
Extend search to 150 or 200 epochs (ablation)DARTS- · CIFAR-10 S2 and S3test error (%): S2 best: 2.63% -> 2.50%; S3 best: 2.42% -> 2.53%Mixed

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