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Generalization Bounds for Meta-Learning via PAC-Bayes and Uniform Stability

NeurIPS 2021 · Learning theory and algorithms › Kernels and regression theory · approach: PAC-Bayes bounds · 0 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Combine base-level uniform stability with meta-level PAC-BayesPAC-BUS · Classification on Ballgeneralization bound: 0.3422±0.0006 -> 0.2213±0.0012Helped
Use PAC-BUS instead of MR-MAMLClassification on Ball · Classification on Balltest loss: 0.1584±0.0012 -> 0.1657±0.0014Hurt
Combine base-level uniform stability with meta-level PAC-BayesPAC-BUS · Mini-Wiki 4-way 1-, 3-, and 5-shotgeneralization bound: 0.6638±0.0011 -> 0.4999±0.0003; 0.6366±0.0006 -> 0.5058±0.0002; 0.6343±0.0014 -> 0.5101±0.0002Helped
Use PAC-BUS instead of MAMLMini-Wiki · Mini-Wiki 4-way 1-, 3-, and 5-shotmeta-test loss: 0.3916±0.0009 -> 0.3922±0.0009; 0.3868±0.0005 -> 0.3878±0.0003; 0.3883±0.0005 -> 0.3895±0.0005No clear effect
Add PAC-BUS(H)'s KL-to-prior and uniform-stability regularizersOmniglot NME · Omniglot NME 20-way 1-shotmeta-test accuracy (%): 23.4±2.2 -> 87.9±0.5; 22.4±0.5 -> 87.9±0.5; 84.2±2.2 -> 87.9±0.5Helped
Add PAC-BUS(H)'s KL-to-prior and uniform-stability regularizersOmniglot NME · Omniglot NME 20-way 5-shotmeta-test accuracy (%): 75.1±4.8 -> 95.0±0.9; 39.1±0.5 -> 95.0±0.9; 94.3±0.3 -> 95.0±0.9Helped

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