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Memory mechanism is a core component of LLM-based agents, enabling reasoning and knowledge discovery over long-horizon contexts. Existing agent memory systems are typically designed within isolated paradigms (e.g., explicit, parametric, or…

Artificial Intelligence · Computer Science 2026-02-10 Xin Zhang , Kailai Yang , Chenyue Li , Hao Li , Qiyu Wei , Jun'ichi Tsujii , Sophia Ananiadou

Large language model (LLM) based agents have recently attracted much attention from the research and industry communities. Compared with original LLMs, LLM-based agents are featured in their self-evolving capability, which is the basis for…

Artificial Intelligence · Computer Science 2024-04-23 Zeyu Zhang , Xiaohe Bo , Chen Ma , Rui Li , Xu Chen , Quanyu Dai , Jieming Zhu , Zhenhua Dong , Ji-Rong Wen

Transformers have reached remarkable success in sequence modeling. However, these models have efficiency issues as they need to store all the history token-level representations as memory. We present Memformer, an efficient neural network…

Computation and Language · Computer Science 2022-04-14 Qingyang Wu , Zhenzhong Lan , Kun Qian , Jing Gu , Alborz Geramifard , Zhou Yu

Long-term memory is one of the key factors influencing the reasoning capabilities of Large Language Model Agents (LLM Agents). Incorporating a memory mechanism that effectively integrates past interactions can significantly enhance…

Computation and Language · Computer Science 2025-08-01 Haoran Sun , Shaoning Zeng

Recent advancements in Large Language Models (LLMs) have yielded remarkable success across diverse fields. However, handling long contexts remains a significant challenge for LLMs due to the quadratic time and space complexity of attention…

Computation and Language · Computer Science 2024-09-02 Weijie Liu , Zecheng Tang , Juntao Li , Kehai Chen , Min Zhang

Memory systems have been designed to leverage past experiences in Large Language Model (LLM) agents. However, many deployed memory systems primarily optimize compression and storage, with comparatively less emphasis on explicit, closed-loop…

Artificial Intelligence · Computer Science 2025-12-24 Xingbo Du , Loka Li , Duzhen Zhang , Le Song

Memory-augmented Large Language Models (LLMs) are essential for developing capable, long-term AI agents. Recently, applying Reinforcement Learning (RL) to optimize memory operations, such as extraction, updating, and retrieval, has emerged…

Computation and Language · Computer Science 2026-04-08 Ziliang Guo , Ziheng Li , Bo Tang , Feiyu Xiong , Zhiyu Li

Large Language Models (LLMs) have demonstrated impressive capabilities across a wide range of NLP tasks, but they remain fundamentally stateless, constrained by limited context windows that hinder long-horizon reasoning. Recent efforts to…

Memory data are ubiquitous in Large Language Model (LLM)-based agents (e.g., OpenClaw and Manus). A few recent works have attempted to exploit agents'memory for improving their performance on the question-answering (QA) task, but they lack…

Computation and Language · Computer Science 2026-05-18 Jiawei Yu , Yixiang Fang , Xilin Liu , Yuchi Ma

Memory emerges as the core module in the Large Language Model (LLM)-based agents for long-horizon complex tasks (e.g., multi-turn dialogue, game playing, scientific discovery), where memory can enable knowledge accumulation, iterative…

While large language model (LLM) agents can effectively use external tools for complex real-world tasks, they require memory systems to leverage historical experiences. Current memory systems enable basic storage and retrieval but lack…

Computation and Language · Computer Science 2025-10-09 Wujiang Xu , Zujie Liang , Kai Mei , Hang Gao , Juntao Tan , Yongfeng Zhang

The evolution of recommender systems has shifted from traditional collaborative filtering to LLM-based agentic systems, which rely on semantic user and item memories to make predictions. However, existing agents maintain these memories in…

Information Retrieval · Computer Science 2026-04-29 Weixin Chen , Yuhan Zhao , Jingyuan Huang , Zihe Ye , Clark Mingxuan Ju , Tong Zhao , Neil Shah , Li Chen , Yongfeng Zhang

Large language models (LLMs) have advanced in large strides due to the effectiveness of the self-attention mechanism that processes and compares all tokens at once. However, this mechanism comes with a fundamental issue -- the predetermined…

Computation and Language · Computer Science 2023-10-10 Howard Chen , Ramakanth Pasunuru , Jason Weston , Asli Celikyilmaz

To enable embodied agents to operate effectively over extended timeframes, it is crucial to develop models that form and access memories to stay contextualized in their environment. In the current paradigm of training transformer-based…

Artificial Intelligence · Computer Science 2025-12-01 Gunshi Gupta , Karmesh Yadav , Zsolt Kira , Yarin Gal , Rahaf Aljundi

Memory plays a pivotal role in enabling large language model~(LLM)-based agents to engage in complex and long-term interactions, such as question answering (QA) and dialogue systems. While various memory modules have been proposed for these…

Computation and Language · Computer Science 2024-12-23 Ruihong Zeng , Jinyuan Fang , Siwei Liu , Zaiqiao Meng

LLM-based search agents often concatenate the full interaction history into the context, producing long and noisy inputs, and increasing compute cost and GPU memory overhead. To address this issue, we propose MemSearcher, an agent framework…

Computation and Language · Computer Science 2026-05-11 Qianhao Yuan , Jie Lou , Zichao Li , Jiawei Chen , Yaojie Lu , Hongyu Lin , Le Sun , Debing Zhang , Xianpei Han

Large Language Model (LLM)-based agents are increasingly deployed for complex, tool-based tasks where long-term memory is critical to driving actions. Existing benchmarks, however, primarily test a angent's ability to passively retrieve…

Computation and Language · Computer Science 2026-01-29 Yiting Shen , Kun Li , Wei Zhou , Songlin Hu

Memory systems often organize user-agent interactions as retrievable external memory and are crucial for long-running agents by overcoming the limited context windows of LLMs. However, existing memory systems invoke LLMs to process every…

Computation and Language · Computer Science 2026-05-18 Zijie Dai , Shiyuan Deng , Sheng Guan , Yizhou Tian , Xin Yao , Xiao Yan , James Cheng

The evolution of Large Language Models (LLMs) into autonomous agents necessitates the management of extensive, dynamic contexts. Current benchmarks, however, remain largely static, relying on passive retrieval tasks that fail to simulate…

Computation and Language · Computer Science 2026-02-02 Shicheng Fang , Yuxin Wang , Xiaoran Liu , Jiahao Lu , Chuanyuan Tan , Xinchi Chen , Yining Zheng , Xuanjing Huang , Xipeng Qiu

Memory-augmented LLM agents maintain external memory banks to support long-horizon interaction, yet most existing systems treat construction, retrieval, and utilization as isolated subroutines. This creates two coupled challenges: strategic…

Artificial Intelligence · Computer Science 2026-03-20 Minhua Lin , Zhiwei Zhang , Hanqing Lu , Hui Liu , Xianfeng Tang , Qi He , Xiang Zhang , Suhang Wang