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Few-Shot Open-Set Recognition Using Meta-Learning

CVPR 2020 · Label-efficient and robust learning › Zero-/few-shot and meta-learning · approach: Embedding adaptation for few-shot classification · 121 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Add GaussianE to the Euclidean-distance baseline (ablation)PEELER · CIFAR10 (ConvNet)AUROC (%): 74.62 -> 75.65Helped
Add OpLoss to the GaussianE model (ablation)PEELER · CIFAR10 (ConvNet)AUROC (%): 75.65 -> 77.22Helped
Add GaussianE to the Euclidean-distance baseline (ablation)PEELER · CIFAR10 (ResNet18)AUROC (%): 82.94 -> 83.12Helped
Add OpLoss to the GaussianE model (ablation)PEELER · CIFAR10 (ResNet18)AUROC (%): 83.12 -> 83.99Helped
Add GaussianE to the Euclidean-distance baseline (ablation)PEELER · miniImageNet (large-scale)AUROC (%): 80.59 -> 81.06Helped
Add OpLoss to the GaussianE model (ablation)PEELER · miniImageNet (large-scale)AUROC (%): 81.06 -> 82.12Helped
Add OpLoss to the Euclidean-distance baseline (ablation)PEELER · miniImageNet 5-way 1-shotAUROC (%): 58.94±0.60 -> 60.94±0.61Helped
Add GaussianE without OpLoss (ablation)PEELER · miniImageNet 5-way 1-shotAUROC (%): 58.94±0.60 -> 58.66±0.60No clear effect
Add OpLoss to the Euclidean-distance baseline (ablation)PEELER · miniImageNet 5-way 5-shotAUROC (%): 66.00±0.67 -> 67.92±0.68Helped
Add GaussianE without OpLoss (ablation)PEELER · miniImageNet 5-way 5-shotAUROC (%): 66.00±0.67 -> 66.50±0.67No clear effect
Use more classes in the few-shot recognition task (5-way to 10-way) (ablation)PEELER · miniImageNet 1-shot open-set recognitionAUROC (%): 61.66±0.62 -> 74.97±0.74Helped
Vary the number of unseen classes sampled per training episode while keeping total open-set samples fixed (ablation)PEELER · Open-set recognitionAUROCNo clear effect

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