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Task-Adaptive Meta-Learning Framework for Advancing Spatial Generalizability

AAAI 2023 · Label-efficient and robust learning › Zero-/few-shot and meta-learning · approach: Meta-augmentation and meta-objectives · 5 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Use an easy-to-hard task hierarchy with models adapted to task difficultyMAML for county-level corn yield prediction · Corn yield, whole yield countiesR² (%): 79.01 -> 80.58Helped
Use an easy-to-hard task hierarchy with hard-task trainingMAML for county-level corn yield prediction · Corn yield, low-yield countiesR² (%): 60.62 -> 64.39Helped
Train Easy and Hard models with 3 inner epochs instead of 1 (ablation)Adaptive-MAML · Corn yield, whole yield countiesR² (%): 80.58 -> 79.77Hurt
Train Easy and Hard models with 3 inner epochs instead of 1 (ablation)Adaptive-MAML · Corn yield, low-yield countiesR² (%): 64.39 -> 63.81Hurt
Increase test-time adaptation from 1 to 2 steps (ablation)Adaptive-MAML-B · Corn yield, low-yield countiesR² (%): 64.39 -> 68.52Helped
Increase test-time adaptation from 1 to 2 steps (ablation)Adaptive-MAML-B · Corn yield, whole yield countiesR² (%): 80.58 -> 80.57No clear effect
Increase test-time adaptation from 1 to 2 steps (ablation)Adaptive-MAML-A · Corn yield, whole yield countiesR² (%): 79.77 -> 77.98Hurt
Increase the number of inner training epochs (ablation)Adaptive-MAML · Corn yield predictionR²Hurt
Set the maximum split number to 1, 2, or 3 (ablation)Adaptive-MAML-B · Corn yield predictionR²No clear effect

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