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Yi Xu

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• ECHO: Efficient Chest X-ray Report Generation with One-step Block Diffusion
• Controlled Self-Evolution for Algorithmic Code Optimization
• Cost-Sensitive Conformal Training with Provably Controllable Learning Bounds
• SHIELD: Suppressing Hallucinations In LVLM Encoders via Bias and Vulnerability Defense
• FaStfact: Faster, Stronger Long-Form Factuality Evaluations in LLMs