الباحثون

Qingyang Zhang

المنشورات 2

نسخة أولية وصول مفتوح

Bridging the EHR Divide: Asymmetric Contrastive Learning for Cross-National Medical Representation Transfer

Qingyang Zhang · 2026

Cross-system transfer of longitudinal Electronic Health Record (EHR) representations is challenging because clinical coding, patient populations, and healthcare workflows differ substantially across institutions and countries. We introduce Asymmetric Supervised Contrastive Learning (Asymmetric SupCon), a task-specific …

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Privy to the Foil: Recasting Value Estimation with a Self-Privileged Critic for RLVR

Kun Liang, Chenming Tang, Clive Bai وآخرون · 2026

Assigning credit to intermediate steps remains a central challenge in training Large Language Models (LLMs) on multi-step reasoning tasks with sparse terminal rewards, and actor-critic methods such as PPO address this by learning value functions to construct token-level advantages. Their effectiveness, however, hinges …

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