Preprint
Aug 2026
Equitable System-Prompt Selection via Constrained Mixed-Strategy GroupDRO
A constrained mixed-strategy GroupDRO framework for system-prompt selection that reduces the Overall Mean, Worst 25% Mean, and Worst by 13.7% on average relative to no mitigation while keeping overall quality close to Average selection.
Mengyu Xu, Qiaoxin Yang, Zhihan Liu et al.
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