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Transformer in Transformer

NeurIPS 2021 · Architectures and efficiency › Attention and transformers · approach: Attention head and block redesign · 1,022 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
add inner transformer on visual words (TNT)DeiT-S · ImageNettop-1 accuracy: 79.8 -> 81.5Helped
add word-level position encoding (ablation)TNT-S · ImageNettop-1 accuracy: 80.8 -> 81.5Helped
add sentence-level position encoding (ablation)TNT-S · ImageNettop-1 accuracy: 80.7 -> 81.5Helped
vary inner heads (1 to 8) (ablation)TNT-S · ImageNettop-1 accuracy: 81.0/81.4/81.5/81.3/81.1Mixed
change visual words per patch m (ablation)TNT-S · ImageNettop-1 accuracy: 81.0 / 81.5 / 81.1No clear effect
replace TNT blocks with vanilla blocks in later layers (ablation)TNT-S · ImageNettop-1 accuracy: 81.5 -> 80.8Hurt
add SE module (ablation)TNT-S · ImageNettop-1 accuracy: 81.5 -> 81.7Helped
TNT-S backbone instead of PVT-SmallDETR · COCO val2017AP: 34.7 -> 38.2Helped

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