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Label Hallucination for Few-Shot Classification

AAAI 2022 · Label-efficient and robust learning › Zero-/few-shot and meta-learning · approach: Embedding adaptation for few-shot classification · 36 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Add soft pseudo-label distillation on the full base dataset during finetuning (ablation)few-shot transfer with ResNet-12 · miniImageNet 5-way 5-shotaccuracy: 80.03 -> 85.60Helped
Add soft pseudo-label distillation on the full base dataset during finetuning (ablation)few-shot transfer with ResNet-12 · CIFAR-FS 5-way 5-shotaccuracy: 85.7 -> 89.5Helped
Add soft pseudo-label distillation on the full base dataset during finetuning (ablation)few-shot transfer with ResNet-12 · FC100 5-way 5-shotaccuracy: 61.9 -> 67.2Helped
Use soft pseudo-labels instead of one-hot hard labels (ablation)Label-Halluc · miniImageNet 5-way 5-shotaccuracy: 80.68 -> 85.60Helped
Use soft pseudo-labels instead of one-hot hard labels (ablation)Label-Halluc · CIFAR-FS 5-way 5-shotaccuracy: 85.3 -> 89.5Helped
Use soft pseudo-labels instead of one-hot hard labels (ablation)Label-Halluc · FC100 5-way 5-shotaccuracy: 62.4 -> 67.2Helped
Apply hallucinated-label gradients to the backbone as well as the classifier (ablation)Label-Halluc · miniImageNet 5-way 5-shotaccuracy: 81.53 -> 85.60Helped
Apply hallucinated-label gradients to the backbone rather than classifier only (ablation)Label-Halluc · miniImageNet 5-way 5-shotaccuracy: 81.53 -> 84.36Helped
Finetune the entire network using only the few-shot support set rather than keeping the backbone frozen (ablation)few-shot transfer with ResNet-12 · miniImageNet 5-way 5-shotaccuracy: 83.18 -> 80.03Hurt
Add Label-Halluc finetuning to IER-distill-pretrained featuresLabel-Halluc (IER-distill pretrained) · miniImageNet 5-way 5-shotaccuracy: 84.50 -> 86.54Helped
Add Label-Halluc finetuning to IER-distill-pretrained featuresLabel-Halluc (IER-distill pretrained) · tieredImageNet 5-way 5-shotaccuracy: 86.57 ± 0.81 -> 87.68 ± 0.83Helped
Use soft pseudo-label distillation rather than AssoAlign softMax with centroid alignmentfew-shot transfer with ResNet-12 · FC100 5-way 5-shotaccuracy: 63.6 -> 67.2Helped

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