Author

Hieu Tran

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Preprint Oct 2026

Is Anyone Enforcing the Cartel? What Reinforcement Learning Teaches LLM Agents in Markets

Evaluations of large language model (LLM) agents report that pricing agents collude at others'expense. Yet collusion is defined by enforcement: a cartel, in which competitors share monopoly profits, holds only if a member who cheats is punished. We introduce an audit that tests enforcement by forcing a member to cheat...

Hieu Tran, Hong Yu · 0 citations

#computer vision Open access Oct 2024

MultiViewDx: Evidence-Linked Multi-View Clinical Diagnosis

MultiViewDx, a partly physician-validated multimodal instruction dataset for evidence-linked multi-view medical imaging diagnosis, is introduced and Controlled ablations and clinician evaluation show that both case-level multi-view organization and evidence-linked reasoning targets contribute to the gain.

Jun-Da Wang, Zonghai Yao, Yujan Ting et al. · Transactions of the Associat... · 2 citations · ⚡1

Open access Feb 2025

Enhancing Large Language Models for Identifying and Prioritizing Important Medical Jargons From Electronic Health Record Notes Using Data Augmentation: Comparative Study

This study evaluated both closed-source and open-source large language models for extracting and prioritizing medical jargon from EHR notes relevant to individual patients, leveraging prompting techniques, fine-tuning, and data augmentation and found that model performance could deviate largely based on prompting style...

W. Jang, Sharmin Sultana, Zonghai Yao et al. · JMIR AI · 1 citation