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Meta-Learning Requires Meta-Augmentation

NeurIPS 2020 · Label-efficient and robust learning › Zero-/few-shot and meta-learning · approach: Meta-augmentation and meta-objectives · 46 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
add label shuffling across tasks (intershuffle) to make tasks mutually exclusive (ablation)MAML · Mini-ImageNet 1-shot 5-wayaccuracy (%): 30.2% -> 46.0%Helped
shuffle label order within fixed class groups (intrashuffle) vs none (ablation)MAML · Mini-ImageNet 1-shot 5-wayaccuracy (%): 30.2% -> 42.7%Helped
resample classes across tasks (intershuffle vs intrashuffle) (ablation)MAML · Mini-ImageNet 1-shot 5-wayaccuracy (%): 42.7% -> 46.0%Helped
add intershuffle label augmentation (ablation)Prototypical Networks · Mini-ImageNet 1-shot 5-wayaccuracy (%): 32.5% -> 37.2%Helped
add intershuffle label augmentation (ablation)Matching Networks · Mini-ImageNet 1-shot 5-wayaccuracy (%): 33.8% -> 39.8%Helped
add intershuffle label augmentation (ablation)MAML · Omniglot 1-shot 5-wayaccuracy (%): 98.1% -> 98.7%No clear effect
add intershuffle label augmentation (ablation)MAML · D'Claw 1-shot 2-wayaccuracy (%): 72.5% -> 83.1%Helped
add discrete-noise label augmentation to regression targets (ablation)MR-MAML / CNP on Pascal3D pose regression · Pascal3D pose regressionMSEHelped
add continuous uniform noise instead of discrete noise (ablation)MR-MAML · Pascal3D pose regressionMSEHurt
remove weight decay from MAML baselineMAML · Pascal3D pose regressionMSEHelped
increase number of discrete noise values beyond 4 (MR-MAML) or 2 (MAML) (ablation)meta-augmentation on Pascal3D · Pascal3D pose regressionMSEHurt
add label noise augmentation to MAML on sinusoid regression (ablation)MAML · Sinusoid regressionMSEHelped

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