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Research map / Label-efficient and robust learning / Self-supervised and contrastive

Learning Representations by Predicting Bags of Visual Words

CVPR 2020 · Label-efficient and robust learning › Self-supervised and contrastive · approach: Invariance-based self-supervised learning · 100 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Train BoWNet to predict visual-word BoW targets from perturbed imagesRotNet representations · CIFAR-100linear accuracy: 60.3 -> 71.5Helped
Train BoWNet to predict visual-word BoW targets from perturbed imagesRotNet representations · VOC07+12 detection on test07AP all: 53.2 -> 55.8Helped
Apply BoWNet iteratively for three training rounds (ablation)BoWNet · CIFAR-100linear accuracy: 71.5 -> 74.5Helped
Remove CutMix augmentation (ablation)BoWNet · CIFAR-100linear accuracy: 71.5 -> 69.7Hurt
Add spatial-pyramid BoW targets (ablation)BoWNet · CIFAR-100linear accuracy: 71.5 -> 71.3No clear effect
Use the perturbed image's BoW as the prediction target instead of the original image's BoW (ablation)BoWNet · CIFAR-100linear accuracy: 71.5 -> 61.3Hurt
Replace the reparameterized prediction layer with a standard linear layer (ablation)BoWNet · CIFAR-100linear accuracy: 71.5 -> 63.3Hurt
Use binary rather than histogram BoW targets (ablation)BoWNet · CIFAR-100linear accuracy: 71.5 -> 71.4No clear effect
Increase vocabulary size from K=2048 to K=4096 (ablation)BoWNet · CIFAR-100linear accuracy: 71.01 -> 70.99No clear effect
Use RelLoc rather than RotNet to build BoW targets (ablation)BoWNet · MiniImageNet novel classes 10-shotaccuracy: 74.0 -> 75.9Helped
Build BoW targets from a randomly initialized base convnet (ablation)BoWNet · MiniImageNet novel classes 10-shotaccuracy: 74.0 -> 68.9Hurt
Build BoW targets from conv5 rather than conv4 (ablation)BoWNet · ImageNet small-scalelinear accuracy: 45.38 -> 40.37Hurt

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