arXiv AI By Bingbing Wang, Jingjie Lin, Weiming Qiao, Jing Li, Ruifeng Xu

All-in-One Memory: Process-Rewarded Reinforcement Learning for Memory Agents

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All-in-One Memory (AiO-Mem) is a reinforcement learning framework that unifies memory retrieval, writing, and stopping decisions into a single reward space. It compiles diverse histories into traceable multi‑view events, uses a unified policy actor to generate interaction trajectories, and employs a trajectory‑conditioned process reward model trained with supervised fine‑tuning and DPO. Experiments on long‑context memory benchmarks show AiO‑Mem consistently improves answer accuracy compared to static memory systems and other RL‑trained agents.

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