Author

Shuhan 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

Oct 2026

Toward Resource-Efficient Billion-Scale SpGEMM on CPU-GPU Heterogeneous Server

Sparse GEneral Matrix Multiplication (SpGEMM) is one of the most vital kernels in massive research domains, including bioinformatics, graph analytics, and machine learning. Moreover, with the prosperity of the Big Data era, nonzero elements in sparse matrices of SpGEMM boost rapidly into the magnitude of billions. Thus...

Ming Dun, Cheng Zhang, Shuhan Song et al. · IEEE Transactions on Paralle... · 0 citations