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Research map / Architectures and efficiency / Neural architecture search

NAS evaluation is frustratingly hard

ICLR 2020 · Architectures and efficiency › Neural architecture search · approach: Efficient NAS search strategies · 122 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Use advanced training tricks and longer training instead of the Base protocol (ablation)DARTS search-space architectures · CIFAR10top-1 test accuracy: over 3 percentage pointsHelped
Train sampled architectures with the best protocol rather than a weaker protocol (ablation)DARTS search-space architectures · CIFAR10top-1 test accuracy: 98.15%Helped
Replace DARTS operations with plain convolutions and max pooling (ablation)DARTS search space · CIFAR10top-1 test accuracy: 0.18 accuracy pointsHurt
Change the training seed (ablation)DARTS-sampled architectures · CIFAR10Kendall tau ranking correlation: 0.48Hurt
Change the training seed (ablation)DARTS-sampled architectures · CIFAR10test accuracy change: 0.13% ± 0.08 (max change is 0.39%)Mixed
Change the number of cells between training and evaluation (ablation)DARTS-sampled architectures · CIFAR10Kendall tau ranking correlation: 0.54Hurt
Change the number of cells between training and evaluation (ablation)DARTS-sampled architectures · CIFAR10architecture rank shift: up to 18 positions (out of 32)Hurt
Sample different architectures within the DARTS search space (ablation)DARTS search space · CIFAR10top-1 test accuracy: 97.03 ± 0.23; 96.18 to 97.56No clear effect
Use the searched architecture rather than the random-sampling baselineNAS methods in the benchmark · CIFAR10, CIFAR100, SPORT8, MIT67, FLOWERS102relative improvement (%): 0.32; 0.23; -0.13; 0.10; 0.25 (DARTS)Mixed

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