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Zeyu Chen

Corresponding author of ECHO. The arXiv title page lists Baidu Inc.; Google Scholar links to the same GitHub homepage, and the GitHub profile shows Baidu/PaddlePaddle open-source work.

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Jul 03, 2026

ECHO: Prune to act, trace to learn with selective turn memory in agentic RL

ECHO 的核心价值在于把 long horizon agent 的 context management 从“压缩历史以继续行动”推进到“保留 source indexed reconstruction trace 以便学习”:每个已完成工具 turn 被压成带原始 turn id 的 memory record,policy 在上下文触顶时选择可复用记忆来重建 bounded context,并把最终正确轨迹的正向 outcome...

2606.31650-echo-selective-turn-memory-agentic-rl Agent MemoryAgent RLLong Context