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Xinyi 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
#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
Preprint Aug 2026

Can Agent Memory Systems Track Evolving State?

StateMem is presented, a state-first memory method that explicitly tracks supersession and relational dependencies, and it is shown it improves current-state accuracy over the strongest same-backbone baseline and over the strongest memory system, while remaining competitive with the long-context baselines.

Xin-Yi Fan, Miri Liu, Ruozhen Yang et al. · 5 citations · ⚡1

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