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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

Memory is a fundamental component for enabling long-context LLM agents, supporting persistent state across interactions through a continuous serve-and-update lifecycle. Despite substantial prior work, existing systems suffer from…

Databases · Computer Science 2026-05-26 Han Chen , Zining Zhang , Wenqi Pei , Bingsheng He , Ming Wu , Jason Zeng , Michael Heinrich , Wei Wu , Hongbao Zhang

Long-term memory systems enable conversational agents based on large language models (LLMs) to retain, retrieve, and apply user-specific information across multi-session interactions. However, existing evaluations mainly assess…

Information Retrieval · Computer Science 2026-05-21 Zhen Tao , Jinxiang Zhao , Peng Liu , Dinghao Xi , Yanfang Chen , Wei Xu , Zhiyu Li

Personalized LLM agents maintain persistent cross-session state to support long-horizon collaboration. Yet, this persistence introduces a subtle but critical security vulnerability: routine user-agent interactions can gradually reshape an…

Cryptography and Security · Computer Science 2026-05-11 Xiaoyu Xu , Minxin Du , Qipeng Xie , Haobin Ke , Qingqing Ye , Haibo Hu

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

Since the official release of ChatGPT in 2022, large language models (LLMs) have rapidly evolved from chatbot-style interfaces into agentic systems that can delegate work through tools and newly spawned subagents. While these capabilities…

Cryptography and Security · Computer Science 2026-05-12 Ziwen Cai , Yihe Zhang , Xiali Hei

With the prosperity of large language models (LLMs), powerful LLM-based intelligent agents have been developed to provide customized services with a set of user-defined tools. State-of-the-art methods for constructing LLM agents adopt…

Computation and Language · Computer Science 2024-06-06 Yifei Wang , Dizhan Xue , Shengjie Zhang , Shengsheng Qian

As LLM-based agents are increasingly used in long-term interactions, cumulative memory is critical for enabling personalization and maintaining stylistic consistency. However, most existing systems adopt an ``all-or-nothing'' approach to…

Artificial Intelligence · Computer Science 2026-01-09 Muzhao Tian , Zisu Huang , Xiaohua Wang , Jingwen Xu , Zhengkang Guo , Qi Qian , Yuanzhe Shen , Kaitao Song , Jiakang Yuan , Changze Lv , Xiaoqing Zheng

Recent advances in foundation models have transformed LLMs from passive conversational systems into autonomous agents capable of reasoning and tool execution. While these capabilities unlock substantial practical value, they also introduce…

Cryptography and Security · Computer Science 2026-05-25 Zhe Liu , Zonghao Ying , Wenxin Zhang , Quanchen Zou , Deyue Zhang , Dongdong Yang , Xiangzheng Zhang , Hao Peng

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

Conversational agents struggle to handle long conversations due to context window limitations. Therefore, memory systems are developed to leverage essential historical information. Existing memory systems typically follow a pipeline of…

Computation and Language · Computer Science 2026-01-30 Yimin Deng , Yuqing Fu , Derong Xu , Yejing Wang , Wei Ni , Jingtong Gao , Xiaopeng Li , Chengxu Liu , Xiao Han , Guoshuai Zhao , Xiangyu Zhao , Li Zhu , Xueming Qian

Recent studies have demonstrated the vulnerability of Automatic Speech Recognition systems to adversarial examples, which can deceive these systems into misinterpreting input speech commands. While previous research has primarily focused on…

Sound · Computer Science 2025-11-21 Aravindhan G , Yuvaraj Govindarajulu , Parin Shah

Recent work has identified that classification models implemented as neural networks are vulnerable to data-poisoning and Trojan attacks at training time. In this work, we show that these training-time vulnerabilities extend to deep…

Cryptography and Security · Computer Science 2019-03-18 Panagiota Kiourti , Kacper Wardega , Susmit Jha , Wenchao Li

The widespread availability of large-scale code datasets has accelerated the development of code large language models (CodeLLMs), raising concerns about unauthorized dataset usage. Dataset poisoning offers a proactive defense by reducing…

Cryptography and Security · Computer Science 2026-04-27 Yuan Xiao , Jiaming Wang , Yuchen Chen , Wei Song , Jun Sun , Shiqing Ma , Yanzhou Mu , Juan Zhai , Chunrong Fang , Jin Song Dong , Zhenyu Chen

In the domain of large language models (LLMs), in-context learning (ICL) has been recognized for its innovative ability to adapt to new tasks, relying on examples rather than retraining or fine-tuning. This paper delves into the critical…

Cryptography and Security · Computer Science 2025-06-03 Pengfei He , Han Xu , Yue Xing , Hui Liu , Makoto Yamada , Jiliang Tang

Recent advances in large language models (LLMs) have catalyzed the rise of autonomous AI agents capable of perceiving, reasoning, and acting in dynamic, open-ended environments. These large-model agents mark a paradigm shift from static…

Artificial Intelligence · Computer Science 2025-07-01 Hang Su , Jun Luo , Chang Liu , Xiao Yang , Yichi Zhang , Yinpeng Dong , Jun Zhu

The pre-training of large language models (LLMs) relies on massive text datasets sourced from diverse and difficult-to-curate origins. Although membership inference attacks and hidden canaries have been explored to trace data usage, such…

Cryptography and Security · Computer Science 2025-06-19 Wassim Bouaziz , Mathurin Videau , Nicolas Usunier , El-Mahdi El-Mhamdi

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

Large Language Models (LLMs) are progressively being utilized as machine learning services and interface tools for various applications. However, the security implications of LLMs, particularly in relation to adversarial and Trojan attacks,…

Cryptography and Security · Computer Science 2023-11-01 Jiaqi Xue , Mengxin Zheng , Ting Hua , Yilin Shen , Yepeng Liu , Ladislau Boloni , Qian Lou

Agent memory has been touted as a dimension of growth for LLM-based applications, enabling agents that can accumulate experience, adapt across sessions, and move beyond single-shot question answering. The current generation of agent memory…

Computation and Language · Computer Science 2025-12-16 Chris Latimer , Nicoló Boschi , Andrew Neeser , Chris Bartholomew , Gaurav Srivastava , Xuan Wang , Naren Ramakrishnan