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A-ViT: Adaptive Tokens for Efficient Vision Transformer

CVPR 2022 · Architectures and efficiency › Attention and transformers · approach: Hybrid and interpretable ViT designs · 326 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Halt spatial tokens independently at different depths instead of halting every token together (ablation)DeiT-Tiny with ACT-style halting · ImageNet1K validationFLOPs: 1.0G -> 0.8GHelped
Add a distributional prior on halting scores (ablation)A-ViT-T · ImageNet1K validationTop-1 accuracy: +6.4%Helped
Use the distributional prior alone without ACT ponder loss (ablation)A-ViT-T · ImageNet1K validationTop-1 accuracy: more than 2%Hurt
Use one embedding dimension for halting, set to zero, without fine-tuning (ablation)DeiT-T/S · ImageNet1KTop-1 accuracy: 0.08% ± 0.04%/0.04% ± 0.03%Hurt
Add a two-layer auxiliary network for halting (ablation)A-ViT-T · ImageNet1KTop-1 accuracy: +0.06%Helped
Add a two-layer auxiliary network for halting (ablation)A-ViT-T · ImageNet1Kinference throughput: −12.6%Hurt
Apply adaptive token haltingDeiT-Small · ImageNet1Kthroughput: 0.8K imgs/s -> 1.1K imgs/sHelped
Apply adaptive token haltingDeiT-Tiny · ImageNet1Kthroughput: 2.1K imgs/s -> 3.4K imgs/sHelped

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