Author

Xu-Yao Zhang

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Preprint Oct 2026

CoTA++: Understanding the Repeat Curse in dMLLMs from an Information Flow Perspective

Diffusion-based multimodal large language models (dMLLMs) decode by iterative denoising with bidirectional attention, which precludes the standard autoregressive key--value cache. Practical deployments therefore rely on approximate caching that reuses intermediate states across denoising steps. Such caching, however, o...

Qi-Yan Zhao, Xiao-Feng Zhang, Xu-Yao Zhang et al. · 0 citations

Open access Sep 2026

Automated Brief Hospital Course Summarization in Cardiac Surgery Using a Lightweight Large Language Model–Based Framework: Development and Evaluation Study on the Medical Information Mart for Intensive Care-IV

Background Physician documentation requirements are a known contributor to clinician burnout, with the manual creation of brief hospital course (BHC) summaries being particularly time-consuming. Automating BHC summarization may mitigate this workload and reduce documentation errors. However, current natural language pr...

Xiao-Yuan Gao, Yang Wang, Zi-Xing Wang et al. · Journal of Medical Internet... · 0 citations

Preprint Aug 2026

Coalition-Aware Skill Reliability for Self-Evolving Agents

Systematic skill-bank audits reveal two recurring reliability failures: coalition pollution, where bank-level gains conceal negative coalition-level skill contributions, and cross-domain utility reversal, where source-beneficial skills reverse their effects after transfer.

Qiyan Zhao, Xiao-Feng Zhang, Bo Liu et al. · 0 citations