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External memory systems are pivotal for enabling Large Language Model (LLM) agents to maintain persistent knowledge and perform long-horizon decision-making. Existing paradigms typically follow a two-stage process: computationally expensive…

Machine Learning · Computer Science 2026-04-27 Xiucheng Xu , Bingbing Xu , Xueyun Tian , Zihe Huang , Rongxin Chen , Yunfan Li , Huawei Shen

Long-term memory is a critical capability for multimodal large language model (MLLM) agents, particularly in conversational settings where information accumulates and evolves over time. However, existing benchmarks either evaluate…

Computation and Language · Computer Science 2026-01-08 Yuanchen Bei , Tianxin Wei , Xuying Ning , Yanjun Zhao , Zhining Liu , Xiao Lin , Yada Zhu , Hendrik Hamann , Jingrui He , Hanghang Tong

Existing memory systems enable Large Language Models (LLMs) to support long-horizon human-LLM interactions by persisting historical interactions beyond limited context windows. However, while recent approaches have succeeded in constructing…

Computation and Language · Computer Science 2026-04-21 Haidong Xin , Xinze Li , Zhenghao Liu , Yukun Yan , Shuo Wang , Cheng Yang , Yu Gu , Ge Yu , Maosong Sun

Current approaches to memory in Large Language Models (LLMs) predominantly rely on static Retrieval-Augmented Generation (RAG), which often results in scattered retrieval and fails to capture the structural dependencies required for complex…

Computation and Language · Computer Science 2026-02-11 Zhengxuan Lu , Dongfang Li , Yukun Shi , Beilun Wang , Longyue Wang , Baotian Hu

Long-horizon conversational agents have to manage ever-growing interaction histories that quickly exceed the finite context windows of large language models (LLMs). Existing memory frameworks provide limited support for temporally…

Computation and Language · Computer Science 2026-05-01 Kai Li , Xuanqing Yu , Ziyi Ni , Yi Zeng , Yao Xu , Zheqing Zhang , Xin Li , Jitao Sang , Xiaogang Duan , Xuelei Wang , Chengbao Liu , Jie Tan

Large language model (LLM) agents face fundamental limitations in long-horizon reasoning due to finite context windows, making effective memory management critical. Existing methods typically handle long-term memory (LTM) and short-term…

Computation and Language · Computer Science 2026-05-01 Yi Yu , Liuyi Yao , Yuexiang Xie , Qingquan Tan , Jiaqi Feng , Yaliang Li , Libing Wu

Existing works on long-term open-domain dialogues focus on evaluating model responses within contexts spanning no more than five chat sessions. Despite advancements in long-context large language models (LLMs) and retrieval augmented…

Computation and Language · Computer Science 2024-02-28 Adyasha Maharana , Dong-Ho Lee , Sergey Tulyakov , Mohit Bansal , Francesco Barbieri , Yuwei Fang

Large language models (LLMs) have achieved impressive linguistic capabilities. However, a key limitation persists in their lack of human-like memory faculties. LLMs exhibit constrained memory retention across sequential interactions,…

Computation and Language · Computer Science 2024-05-29 Jing Guo , Nan Li , Jianchuan Qi , Hang Yang , Ruiqiao Li , Yuzhen Feng , Si Zhang , Ming Xu

Large language models (LLMs) are increasingly deployed as intelligent agents that reason, plan, and interact with their environments. To effectively scale to long-horizon scenarios, a key capability for such agents is a memory mechanism…

Artificial Intelligence · Computer Science 2026-01-09 Yuyang Hu , Jiongnan Liu , Jiejun Tan , Yutao Zhu , Zhicheng Dou

Memory is a central capability for LLM agents operating across long-horizon tasks. Existing memory benchmarks predominantly evaluate retention of personalized information in multi-turn chat scenarios, overlooking the dynamic memory…

Computation and Language · Computer Science 2026-05-21 Wujiang Xu , Yu Wang , Kai Mei , Kaiqu Liang , Zhenting Wang , Mingyu Jin , Han Zhang , Shi-Xiong Zhang , Wenyue Hua , Sambit Sahu , Dimitris N. Metaxas

AI agents that interact with users across multiple sessions require persistent long-term memory to maintain coherent, personalized behavior. Current approaches either rely on flat retrieval-augmented generation (RAG), which loses structural…

Artificial Intelligence · Computer Science 2026-05-14 Swarna Kamal Paul , Shubhendu Sharma , Nitin Sareen

Large language model (LLM) multi-agent systems can scale along two distinct dimensions: by increasing the number of agents and by improving through accumulated experience over time. Although prior work has studied these dimensions…

Multiagent Systems · Computer Science 2026-04-07 Shanglin Wu , Yuyang Luo , Yueqing Liang , Kaiwen Shi , Yanfang Ye , Ali Payani , Kai Shu

Large language model (LLM)-powered multi-agent systems (MAS) have demonstrated cognitive and execution capabilities that far exceed those of single LLM agents, yet their capacity for self-evolution remains hampered by underdeveloped memory…

Multiagent Systems · Computer Science 2025-06-17 Guibin Zhang , Muxin Fu , Guancheng Wan , Miao Yu , Kun Wang , Shuicheng Yan

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

I introduce a novel associative memory model named Correlated Dense Associative Memory (CDAM), which integrates both auto- and hetero-association in a unified framework for continuous-valued memory patterns. Employing an arbitrary graph…

Neural and Evolutionary Computing · Computer Science 2024-06-04 Thomas F Burns

Large language models (LLMs) excel at single-turn reasoning but often lose accuracy and coherence over extended, multi-turn interactions. Recent evaluations such as TurnBench highlight recurring failure modes-reasoning bias, task drift,…

Computation and Language · Computer Science 2025-12-17 Yiran Zhang , Jincheng Hu , Mark Dras , Usman Naseem

To support long-term interaction in complex environments, LLM agents require memory systems that manage historical experiences. Existing approaches either retain full interaction histories via passive context extension, leading to…

Artificial Intelligence · Computer Science 2026-01-30 Jiaqi Liu , Yaofeng Su , Peng Xia , Siwei Han , Zeyu Zheng , Cihang Xie , Mingyu Ding , Huaxiu Yao

Large Language Models (LLMs) have demonstrated impressive fluency and task competence in conversational settings. However, their effectiveness in multi-session and long-term interactions is hindered by limited memory persistence. Typical…

Computation and Language · Computer Science 2025-08-19 Maitreyi Chatterjee , Devansh Agarwal

Lifelong interactive agents are expected to assist users over months or years, which requires continually writing long term memories while retrieving the right evidence for each new query under fixed context and latency budgets. Existing…

Information Retrieval · Computer Science 2026-03-23 Can Lv , Heng Chang , Yuchen Guo , Shengyu Tao , Shiji Zhou

Memory plays a foundational role in augmenting the reasoning, adaptability, and contextual fidelity of modern Large Language Models and Multi-Modal LLMs. As these models transition from static predictors to interactive systems capable of…

Artificial Intelligence · Computer Science 2026-01-15 Zixia Jia , Jiaqi Li , Yipeng Kang , Yuxuan Wang , Tong Wu , Quansen Wang , Xiaobo Wang , Shuyi Zhang , Junzhe Shen , Qing Li , Siyuan Qi , Yitao Liang , Di He , Zilong Zheng , Song-Chun Zhu