Author

Zi-Jian Song

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Preprint Oct 2026

X-Ragent: Tool-Augmented Reinforcement Learning for Evidence-Grounded Chest X-Ray Reasoning

Chest X-ray (CXR) interpretation often requires integrating visual findings with task-specific evidence rather than relying on direct visual recognition alone. While tool-augmented medical agents can supply such evidence via external modules, they often lack explicit mechanisms for learning when auxiliary evidence is n...

Yi Wang, Zhenlong Yuan, Yu-Chan Guo et al. · 0 citations

Preprint Oct 2026

Verifier-Mediated Multi-LLM Coordination for Multi-Robot Path Planning

Foundation models are increasingly used for high-level multi-robot task planning, yet independently generated symbolic plans can become jointly infeasible after geometric grounding because of shared spatial and temporal constraints. We study execution-aware coordination of large-language-model (LLM) planners for multi-...

V. Khatana, Zi-Jian Song, N. Hovakimyan et al. · 0 citations