# SAM：面向长期推理智能体的状态自适应记忆

- 来源：HuggingFace Daily Papers（社区热门论文）
- 发布时间：2026-05-23 08:00
- AIHOT 分数：55
- AIHOT 链接：https://aihot.virxact.com/items/cmpnm6uww0ytosl01j695hbgp
- 原文链接：https://arxiv.org/abs/2605.24468

## AI 摘要

针对长期智能体推理中交互历史过长且关键信息分散的问题，SAM框架提出了一种状态自适应记忆方案。该方案将当前交互整合为紧凑的记忆线索，同时保留原始轨迹页面以支持意图驱动的召回，无需重新训练主干模型。SAM通过专家监督与强化学习优化记忆模块，使其与轨迹级效用对齐。在BrowseComp、BrowseComp-ZH、WideSearch和HLE等基准测试中，SAM在不同智能体骨架上均持续优于强基线。

## 正文

Long-horizon agentic reasoning requires large language models to act over long interaction histories containing thoughts, tool calls, observations, and partial conclusions. The challenge is not merely that these histories grow long, but that information needed for the current decision may be scattered across distant steps and only become relevant later. Existing approaches address this difficulty by truncating the interaction history, compressing it into shorter surrogates, or retrieving selected parts of it for reuse, but they do not explicitly model how access to past interaction should adapt to the agent's evolving state. We instead cast long-horizon reasoning as a problem of state-adaptive memory. To this end, we propose State-Adaptive Memory~(SAM), a standalone framework that consolidates ongoing interaction into compact memory cues while preserving raw trajectory pages for intent-driven recall. These cues are not treated as replacements for history; rather, they serve as lightweight handles that allow the agent to reconstruct temporally distant information according to its current needs, without retraining the underlying backbone. We further optimize the memory module through expert-guided supervision and reinforcement learning, aligning it with trajectory-level utility. Across BrowseComp, BrowseComp-ZH, WideSearch, and HLE, SAM consistently outperforms strong baselines over diverse agent backbones. Our results suggest that explicit memory modeling provides a simple and effective foundation for long-horizon agentic reasoning.