Author

Doudou Zhou

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Preprint Aug 2026

Inferential Evaluation of Surrogate-Derived Models under Covariate Shift

Cross-fitted estimators that transport information from the two labeled sources through source-specific density ratios are proposed that establish asymptotically linear inference for TPR and FPR, consistency and pointwise inference for the ROC curve, and asymptotically normal inference for AUC.

Long-Tian Shi, Molei Liu, Doudou Zhou · 0 citations

Preprint Jul 2026

Personalizing Large Language Model Agents with Small Policy Models

This work forms personalization of a frozen agent as online learning of a per-user execution policy from scalar feedback observed only for the executed action, and proposes FABLE (Factorized Adaptive Bandit Layer for Execution), a lightweight policy layer outside a potentially black-box host agent.

Dian Jin, Zhi Zhang, Huichao Li et al. · 0 citations