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Task Cooperation for Semi-Supervised Few-Shot Learning

AAAI 2021 · Label-efficient and robust learning › Zero-/few-shot and meta-learning · approach: Meta-learning analysis and benchmarks · 19 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Add prediction-distribution matching between similar tasks using unlabeled pool data (ablation)ProtoNet/TACO · MiniImageNet SS-FSL, SAC and SAIaccuracy: 42.33 -> 43.97; 44.73 -> 46.56Helped
Add prediction-distribution matching between similar tasks using unlabeled pool dataProtoNet/TACO · MiniImageNet SS-FSL, SAC and SAI, 5-shotaccuracyHelped
Use task-cooperation training with unlabeled dataProtoNet · TieredImageNet SS-FSL, 1-shot and 5-shotaccuracyMixed
Use TACO task cooperationResNet-12 few-shot classifier · MiniImageNet and TieredImageNet, 1-shot and 5-shotaccuracy: 66.57 vs 63.85; 82.10 vs 79.44; 71.12 vs 69.89; 85.42 vs 84.23Helped
Use unlabeled query instances during TACO evaluationTACO† · MiniImageNet and TieredImageNet, transductive, 1-shot and 5-shotaccuracy: 68.23 vs 67.19; 83.42 vs 80.64; 75.53 vs 73.21; 85.72 vs 84.93Helped
Increase matching weight from λ=0.1 to λ=1 (ablation)TACO · MiniImageNet SS-FSL, SAC and SAI, 1-shotaccuracy: 43.97 -> 42.31; 46.56 -> 44.65Hurt
Set temperature to T=1 instead of T=2 (ablation)TACO · MiniImageNet SS-FSL, SAC and SAI, 1-shotaccuracy: 43.97 -> 43.58; 46.56 -> 46.50No clear effect
Set temperature to T=4 instead of T=2 (ablation)TACO · MiniImageNet SS-FSL, SAC and SAI, 1-shotaccuracy: 43.97 -> 43.23; 46.56 -> 46.47No clear effect
Add unlabeled-data use to Semi-ProtoNetSemi-ProtoNet · SS-FSL, 1-shotaccuracyNo clear effect
Use unlabeled instances to estimate class centersSemi-ProtoNet · SS-FSL, more than one instance per classaccuracyHelped

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