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Xing Fan

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#artificial intelligence Preprint Oct 2026

MemComposer: Learning to Assemble Memories for LLM Agents via Reinforcement Learning

Agent memory enables large language model (LLM) agents to reuse past experiences without updating their parameters. However, semantic similarity alone does not guarantee memory usefulness: downstream performance depends on how memories are selected and presented to the agent. We propose MemComposer, a memory composer t...

Yi-Xuan Xie, Xue-Qiang Xu, Xin-Yi Fan et al. · 0 citations
#machine learning Preprint Oct 2026

WOVEN: Weaving Visual World Modeling into Multimodal LLMs

Multimodal large language models (MLLMs) struggle with spatial, embodied, physical, and temporal reasoning. We hypothesize that these failures reflect a shared deficit in visual transition reasoning, and test whether this capability can serve as a shared training primitive, one that different models can learn from diff...

Zhe-Yu Fan, Yue Zhang, Ming-Kai Deng et al. · 0 citations
#artificial intelligence Preprint Sep 2026

EnSIMem: Entity-Structured Indexing for Long-Term Agent Memory

Results show that entity-structured indexing and episode-level provenance provide a reliable foundation for long-term memory in agents, and EnSIMem achieves high answer accuracy while maintaining compact, evidence-focused contexts.

Xuan-Yu Meng, Xing Fan, Xin-Yi Fan et al. · 0 citations
#machine learning Preprint Aug 2026

Scaling Automatic Research Agents via World Models

This paper proposes World Model RL (WMRL), which replaces environment execution with a world model to remove this bottleneck and accelerates training by 3-4x on various tasks at different agent scales, while exceeding the performance of standard RL baselines.

Xi-Yuan Yang, S. Sarwar, Jingru Cheng et al. · 1 citation

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