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Model-Agnostic Meta-Learning for Fast Adaptation of Deep Networks

ICML 2017 · Label-efficient and robust learning › Zero-/few-shot and meta-learning · approach: Meta-augmentation and meta-objectives · 6,288 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
train an initialization to perform well after task-specific gradient adaptationMAML · Sinusoid regression, 5-shot, 1 gradient stepmean squared error: 2.41 -> 0.67Helped
train an initialization to perform well after task-specific gradient adaptationMAML · MiniImagenet, 5-way 1-shotaccuracy: 43.44 ± 0.77% -> 48.70 ± 1.84%Helped
omit second derivatives in the meta-gradient (ablation)MAML · MiniImagenet, 5-way 1-shotaccuracy: 48.70 ± 1.84% -> 48.07 ± 1.75%No clear effect
omit second derivatives in the meta-gradient (ablation)MAML · MiniImagenet, 5-way 5-shotaccuracy: 63.11 ± 0.92% -> 63.15 ± 0.91%No clear effect
adapt only an input context vector instead of model parameters (ablation)MAML · Omniglot, 5-way 1-shotaccuracy: 98.7 ± 0.4% -> 94.9 ± 0.9%Hurt
adapt only an input context vector instead of model parameters (ablation)MAML · Omniglot, 5-way 5-shotaccuracy: 99.9 ± 0.1% -> 97.7 ± 0.3%Hurt
adapt only an input context vector instead of model parameters (ablation)MAML · 2D Pointmass, 1 gradient stepaverage return: -11.68 -> -13.90Hurt
adapt only an input context vector instead of model parameters (ablation)MAML · 2D Pointmass, 3 gradient stepsaverage return: -3.23 -> -3.18Helped
adapt only an input context vector instead of model parameters (ablation)MAML · Half-cheetah forward/backward, 1 gradient stepaverage return: 293.19 -> -44.08Hurt
adapt only an input context vector instead of model parameters (ablation)MAML · Half-cheetah forward/backward, 3 gradient stepsaverage return: 315.65 -> -42.50Hurt
use the MAML initialization rather than conventional pretrainingMAML policy · 2D navigationadaptation performanceHelped
use MAML initialization rather than random initialization or pretrainingMAML policy · Locomotion tasksadaptation performanceHelped

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