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Xin-Rui Chen

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#machine learning Preprint Sep 2026

HiLoRe: What to Store, Compress, or Recompute for Efficient GRPO Training

Group-relative policy optimization (GRPO) makes learner-side activations a major memory-computation bottleneck: gradient checkpointing reduces activation memory through recomputation, but fixed schedules can leave roughly 18 GB unused on a 48-GB GPU despite substantial recomputation overhead. Existing activation-manage...

Xin-Rui Chen, Mengyang Li, Ou Wu et al. · 0 citations
#artificial intelligence Preprint Sep 2026

MemAgent: Learning to Manage Heterogeneous Memory Providers for LLM Agents

Current agents remain largely stateless across tasks, limiting their ability to continually improve from prior interactions and making memory essential for long-horizon agentic behavior. Existing memory methods seek to reuse past experience, but most rely on a single memory representation (e.g., trajectories, reflectio...

Yong-Xian Wei, Yi-Lin Zhao, Run-Xi Cheng et al. · 0 citations
#artificial intelligence Preprint Sep 2026

CompKV: Compensation-Aware KV Selection for Long-Context LLM Inference

CompKV is introduced, the first compensation-aware sparse attention framework that divides tokens into blocks and explicitly optimizes selection for the downstream compensation mechanism, and shows that the residual left by block-level mean compensation is governed by both block attention mass and within-block logit va...

Zheng-Hong Huang, Rui-Zhe Yao, Dan-Yi Liu et al. · 0 citations

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