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Guangzeng Han

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#natural language process... Preprint Aug 2026

AIA$^{2}$: Attribute-Agnostic Imbalance Augmentation for Subgroup Robustness

Attribute-Agnostic Imbalance Augmentation (AIA) is proposed, a framework for improving model robustness under varying subgroup imbalances without explicit subgroup annotations and shows improved performance on the lowest-performing subgroups and consistent gains over competitive baselines.

Hanshu Rao, Guangzeng Han, Xiaolei Huang · 0 citations