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Chasing Sparsity in Vision Transformers: An End-to-End Exploration

NeurIPS 2021 · Architectures and efficiency › Attention and transformers · approach: Vision transformer pruning · 86 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
dynamic sparse training (SViTE) instead of OMP/GMP/TP pruningDeiT-Small 50% sparsity · ImageNet-1K valtop-1 accuracy: 76.88 -> 79.72Helped
large sparse ViT instead of small dense ViT with similar parametersDeiT-Base · ImageNet-1K valtop-1 accuracy: 78.59 -> 81.51Helped
structured S2ViTE prune-and-grow instead of SSPDeiT-Small 40% structured sparsity · ImageNet-1K valtop-1 accuracy: 77.74 -> 79.22Helped
40% structured sparsity via S2ViTEDeiT-Base · ImageNet-1K valtop-1 accuracy: 81.80 -> 82.22Helped
add learnable token selector, 5% tokens dropped (ablation)SViTE-Small 50% sparsity · ImageNet-1K valtop-1 accuracy: 79.72 -> 80.18Helped
drop 30% of tokens (ablation)SViTE+-Small 50% sparsity · ImageNet-1K valtop-1 accuracy: 79.72 -> 77.90Hurt
add token selector to structured sparsity (ablation)S2ViTE-Small 40% · ImageNet-1K valtop-1 accuracy: 79.22 -> 78.44Hurt
add SViTE weight sparsity on top of token selector only (ablation)DeiT-Small with 10% data sparsity · ImageNet-1K valtop-1 accuracy: 78.67 -> 79.91Helped
update interval 20000 versus larger or smaller (ablation)SViTE-Tiny 50% sparsity · ImageNet-1K valtop-1 accuracyHelped
batch size 512 versus other options (ablation)SViTE-Tiny 50% sparsity · ImageNet-1K valtop-1 accuracyHelped
train dense baseline 600 instead of 300 epochsDeiT-Base · ImageNet-1K valtop-1 accuracy: 81.80 -> 82.01Helped
apply SViTE to TNT-S backboneTNT-S · ImageNet-1K valtop-1 accuracy: 81.50 -> 81.63Helped

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