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On Data Scaling in Masked Image Modeling

CVPR 2023 · Label-efficient and robust learning › Self-supervised and contrastive · approach: Masked autoencoder pretraining · 56 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Increase pre-training data from IN1K (50%) to IN1K (100%) and train for 500K iterationsSwinV2-H with SimMIM · ImageNet-1K image classificationtop-1 accuracy: less than 0.1 at 125K iterations; near 0.5 at 500K iterationsHelped
Increase pre-training data from IN1K (50%) to IN1K (100%)SwinV2-S with SimMIM · ImageNet-1K image classificationtop-1 accuracyNo clear effect
Increase pre-training data from IN1K (20%) to IN1K (100%)SwinV2-H with SimMIM · ImageNet-1K image classificationtop-1 accuracy: 84.4; 86.3Helped
Increase training length and data size for larger encodersSwinV2-L with SimMIM · iNaturalist-18top-1 accuracy: 77.2 -> 81.9Helped
Use IN1K (100%) rather than IN1K (10%) for pre-trainingSwinV2-L with SimMIM, 500K iterations · ADE20KmIoU: 41.9 -> 51.1Helped
Train a large model longer on a small datasetSwinV2-L with SimMIM on IN1K (10%) · ImageNet-1K image classificationtop-1 accuracy: 83.7Mixed
Add a 47² sliding-window normalization to the reconstruction target (ablation)SimMIM with SwinV2-L · ImageNet-1K image classificationtop-1 accuracy: +0.3Helped
Use a 4-block decoder instead of a linear decoder (ablation)SwinV2-B with SimMIM on IN1K (20%) · ImageNet-1K image classificationtop-1 accuracy: 84.4 -> 84.4No clear effect
Use an 8-block decoder instead of a linear decoder (ablation)SwinV2-B with SimMIM on IN1K (20%) · ImageNet-1K image classificationtop-1 accuracy: 84.4 -> 84.5No clear effect
Sample 100 classes rather than 10% of images uniformly across all IN1K classes (ablation)SwinV2-L with SimMIM, 500K iterations · ImageNet-1K image classificationtop-1 accuracy: 83.5 -> 83.4No clear effect
Use validation loss as a proxy to select pre-trained modelsSimMIM-pre-trained SwinV2 models · Multiple downstream tasksPearson correlation with fine-tuning performance: ImageNet-1K: -0.79 vs -0.64; iNaturalist: -0.54 vs -0.46; COCO detection: -0.81 vs -0.35; COCO segmentation: -0.86 vs -0Helped

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