Long-Term Conversational Memory

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32 papers in the last four weeks, up 191% on the four weeks before. 0.3% of all new papers.

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Relevance Is Not Sufficiency: What Actually Closes the Evidence Gap in Long-Term Memory QA
Oct 7, 2026Yufeng Li, Shuxin Li, Zhenhua Xu +7Long-Term Conversational Memory Agent Memory Management
East China Normal University, Shanghai, China · Nanyang Technological University, Singapore · Zhejiang University, Hangzhou, China +3
Whose Memory Is It? Scope-Aware Commit Rules for Long-Term LLM Memory
Oct 6, 2026Hongyu Gu, Xinchang LiLong-Term Conversational Memory Agent Memory Management
University of Science and Technology of China Hefei, China
Memory Depth and Reconstructed Context Width: A Controlled Evaluation of Hierarchical Retrieval
Oct 6, 2026Michael AndreevConversational Memory LLM Evaluation
Independent Researcher
The Right Memory in the Wrong Context: Verifying Retrieval Admissibility in Long-Term Agent Memory
Oct 5, 2026Zi Wang, Xingqiao Wang, Emmanuel Addai +2Memory Agent Benchmarks Long-Term Conversational Memory
University of Arkansas at Little Rock
RealCompanion: Benchmarking Human Understanding from Reasoning over Longitudinal Real-World Conversations
Oct 1, 2026Arman Behnam, Sunglyoung Kim, Liangwei YangMemory Agent Benchmarks User Modeling
Quis Lab, USA · Independent Researcher, China
Madeleine: Learning Involuntary Recall for Conversational Memory from Simulated Lives
Oct 1, 2026Zhiyun ShiMemory-Augmented Language Models Persistent Memory for Language Models
Nanyang Technological University, Singapore
Role-aware Heuristic Episodic Attention for Conversational LLMs
Oct 1, 2026Wanyang Hong, Zhaoning Zhang, Yi Chen +5Memory-Augmented Language Models Long-Context Language Model Inference
National Key Laboratory of Parallel and Distributed Computing, College of Computer Science and Technology, National University of Defense Technology, Changsha, China.
MemFit: Efficient Long-Term Agentic Memory
Oct 1, 2026Mitchell Piehl, Muchao YeLLM Agent Memory Persistent Memory for Language Models
Department of Computer Science The University of Iowa
StateTree: Enhancing Long-Term Dialogue Reasoning via Reinforcement Learning
Sep 30, 2026Naen Xu, Wanqing Cui, Yibo Hu +5Temporal Reasoning in Language Models RL for Language Model Reasoning
Zhejiang University · Taobao & Tmall Group of Alibaba
TAGGRAPH: Tag-Augmented Graphs for Graph Retrieval of Agent Persistent Histories
Sep 29, 2026Yu-Shu Chen, Yu-Jung Liang, Pengtao XieGraph-Based Retrieval Memory Agent Benchmarks
Department of Electrical and Computer Engineering University of California, San Diego La Jolla, CA 92093, USA
Auditable Long-Term Memory: A Deterministic Retrieval Chain Measured at 479/475 of 500 on LongMemEval-S
Sep 29, 2026Christopher J. ChanhnourackLong-Context Retrieval LLM Auditing
Centennial Defense Systems (Archivist)
Learning to Retrieve Missing Evidence for Long-Term Memory QA
Sep 29, 2026Yi-Xuan Deng, Yi Zhang, Wei Liu +2Persistent Memory for Language Models Question Answering
Tsinghua University
AMU:Admission and Memory Update for Personalized Conversations---Structured Memory with SLM Guided Control
Sep 29, 2026Tao Hwang, Yishi DiaoConversational Memory Persistent Memory for Language Models
Independent Researcher · Nanchang University
Mnemon: Raw Records, Fast Judgments, Slow Thoughts
Sep 28, 2026Guangren WangPersistent Memory for Language Models Memory Agent Benchmarks
EP-Mem: Elastic Privacy Memory for Social Relationship-Aware LLM Agents
Sep 28, 2026Fengzhou Sun, Yuan Zhang, Xintong Yu +1LLM Agent Memory Privacy Leakage in Language Models
State Key Laboratory of Media Convergence and Communication, Communication University of China, Beijing, China
Remember by Asking: Retrieval-Induced Memory Evolution for LLM Agents
Sep 28, 2026Wanqi Zhou, Jiawei Lu, Yang Wang +4LLM Agent Memory Persistent Memory for Language Models
Chang’an University
Stashbird: Efficient Speaker-Indexed Memory for Conversational Agents
Sep 28, 2026Chidera Biringa, Lucas Yannul, Xiaowen Wang +5Persistent Memory for Language Models Graph-Based Agent Memory
Microsoft
When Does Selection Replace Extraction? A Pre-Registered Test of Agent Memory with a Typed Decision Model
Sep 28, 2026Rishabh Sharma, Rishika LallConversational Memory LLM Reranking
Independent Researcher
TWIST: A Proposed Benchmark for Intervention Quality in Conversational Memory, with a Human-Validated Draft-Alignment
Sep 23, 2026Subrat PandaConversational Memory Memory Agent Benchmarks
MindTwin
EnSIMem: Entity-Structured Indexing for Long-Term Agent Memory
Sep 23, 2026Xuanyu Meng, Xing Fan, Xinyi Fan +3Long-Term Conversational Memory Agent Memory Management
University of Illinois Urbana-Champaign · Amazon
SpeakerMem-R1: Speaker-Centered Dual-Track Memory for Multi-Party Dialogue
Sep 22, 2026Haobo Zheng, Tan Tang, Yan Chen +2Conversational Memory LLM Memory
State Key Lab of CAD&CG, Zhejiang University
Propose, Verify, Commit: Evidence-Grounded Memory for Long-Horizon Multi-Actor Conversations
Sep 20, 2026Zihao Lu, Zhihang Yuan, Lei ShiConversational Memory Persistent Memory for Language Models
Alibaba Cloud Computing, Hangzhou, China
JustMem: Just-Enough Memory Access for Long-Term Conversations
Sep 17, 2026Guanhua Chen, Yanting Wang, Wenjing Zhi +1Conversational Memory Persistent Memory for Language Models
Beihang University
Disentangling Long-Term Memory via Latent Neuro-Symbolic Reasoning
Sep 16, 2026Cai Ke, Xinghao Chen, Xiaoyu Shen +6Graph-Based Agent Memory Neuro-Symbolic Reasoning
Tencent Youtu Lab · Zhejiang Key Laboratory of Industrial Intelligence and Digital Twin, EIT, Ningbo, China · Department of Computing, The Hong Kong Polytechnic University, Hong Kong, China +1
Memory Has Geometry: Non-Uniform Geometric Memory for Long-Horizon Personalized AI
Sep 16, 2026Jiahong Liu, Wenhao Yu, Zexuan Qiu +2Neural Representation Geometry LLM Personalization
The Chinese University of Hong Kong, Hong Kong SAR, China · The Hong Kong University of Science and Technology (Guangzhou), Guangzhou, China
Interactive Memory Learning for Long-Term Conversations
Sep 15, 2026Cai Ke, Jiangyue Yan, Han Zhang +5Multi-Agent LLM Systems Long-Term Conversational Memory
Harbin Institute of Technology, Shenzhen, China · Pengcheng Laboratory, China
ThinkFlow: Self-Evolving Probabilistic Latent Memory for Lifelong Conversational Agents
Sep 15, 2026Cai Ke, Xin Liu, Han Zhang +6Test-Time Adaptation Lifelong Learning Agents
Pengcheng Laboratory, China · Harbin Institute of Technology, Shenzhen, China · China Unicom Greater Bay Area Innovation Institute, China
LSREP: A Longitudinal State-Replay Protocol for Evaluating Conversational Memory, with ICE v2 as an Audited Local-First Architecture
Sep 15, 2026Deepesh SonarConversational Memory Memory Agent Benchmarks
Thakur College of Engineering and Technology, Computer Engineering, Mumbai, India
CueMem: Cue-Guided Context Reconstruction for Long-Term Conversational Memory
Sep 14, 2026Changjian Wang, Rongzhen Li, Weili Guan +3Conversational Memory Long-Term Conversational Memory
Mashang Consumer Finance Co., Ltd. · Harbin Institute of Technology, Shenzhen
PRAGMA: Evaluating Personalized Guidance with Memory Alignment in Lifelong Conversations
Sep 10, 2026Hyojeong Yu, Hyukhun Koh, Minsung Kim +2Conversational Memory Persistent Memory for Language Models
Dept. of ECE, Seoul National University · IPAI, Seoul National University
Fortunate Recall: Ontology-Driven Memory Lifecycle Management for Persistent Coherence in LLMs
Sep 9, 2026Ansuman Mullick, Eray TüzünConversational Memory Temporal Reasoning in Language Models
Bilkent University
What Should an Agent Forget? Separating What Is Stored from What Is Used
Sep 9, 2026Yuhang Li, Yuchen LiPersistent Memory for Language Models Temporal IR
East China Normal University Shanghai, China
BIO-MEMART: Biometric-Aware KV Cache Memory for Multi-User LLM Agents
Sep 8, 2026Yanhong Qian, Xuanying He, Qingguo Meng +3Agent Memory Privacy-Preserving Language Models
Anhui Provincial Key Laboratory of Secure Artificial Intelligence, School of Artificial Intelligence, Anhui University, Hefei 230093, China
CreaMem: A Scene-Aware Memory Architecture for Personalized Agents
Sep 8, 2026Qixuan Sun, Yue Que, Bowei He +4LLM Agent Memory Episodic Memory
City University of Hong Kong, Hong Kong SAR, China · AgentWoods Inc., San Francisco · Mohamed bin Zayed University of Artificial Intelligence, Abu Dhabi, UAE
MemForest: Efficient Agent Memory Management via EventTree Partitioning and Progressive Merging
Sep 8, 2026Junxi Wang, Te Sun, Jiayi Zhu +9Graph-Based Agent Memory Long-Term Conversational Memory
Shanghai Jiao Tong University · Nanjing University · HIT +4
Where to Look and What to Use: Retrieve-Localize-Generate for Long-Term Conversational Memory Question Answering
Sep 7, 2026Yifan Wang, Xinkui Lin, Yongxiu Xu +9Graph Retrieval-Augmented Generation Persistent Memory for Language Models
University of Electronic Science and Technology of China, Chengdu, China 4State Key Laboratory of Internet Architecture, Tsinghua University, Beijing, China · Institute of Information Engineering, Chinese Academy of Sciences, Beijing, China 3School of Cyber Security, University of Chinese Academy of Sciences, Beijing, China · 5Independent Researcher
RuleMem: Active Rule Memory for Long-Term Conversational Agents
Sep 3, 2026Xingyuan Zeng, Zuohan Wu, Quanming Yao +5Question Answering Long-Term Conversational Memory
Sun Yat-sen University, Zhuhai, China · The Hong Kong University of Science and Technology (Guangzhou), Guangzhou, China · Tsinghua University, State Key Laboratory of Space Network and Communications, Beijing National Research Center for Information Science and Technology, Beijing, China +2
When Users Don't Ask: Benchmarking Context-Driven Memory Retrieval in Conversational Agents
Sep 3, 2026Wen-Yu Chang, Yun-Nung ChenConversational Memory LLM Agent Memory
National Taiwan University, Taipei, Taiwan
MemoryLACE: Memory Lifecycle-Aware Consolidation and Evidence Retrieval
Sep 2, 2026Meriem Yacoubi, Pia Schmidt, Nenad Petrovic +3Persistent Memory for Language Models Long-Term Conversational Memory
Chair of Robotics, Artificial Intelligence and Real-Time Systems, Technical University of Munich · inovex GmbH · Cerebras Systems Inc.
Architecting Conversational Data Systems for Stateless LLM APIs: The Hydration Proxy Pattern
Sep 1, 2026Joseph AxisaLLM Grounding LLM Serving
Google Cloud · California, USA
FinLifeBench: Exhaustive Life-Event History and Financial-State Reconstruction from Longitudinal Banking Dialogue
Sep 1, 2026Hangyeul Lee, Juyoung Oh, Jaeyong Ko +5Temporal Reasoning in Language Models Multi-Turn Dialogue Evaluation
KakaoBank Financial Tech Lab Seongnam, Republic of Korea
VoiceLongMemEval: Do Assistants Remember How You Sounded?
Sep 1, 2026Ramit Pahwa, Parivesh Priye, Apoorva BeeduAudio-Language Model Evaluation Long-Context Language Model Evaluation
Rivian VW Tech
UTILMEM: Benchmarking Evidence Utilization in Long-Term Conversational Memory
Aug 31, 2026Peijun Qing, Fobo Shi, Soroush VosoughiLLM Agent Memory Memory Agent Benchmarks
Dartmouth College · Wuhan University
FTA-Mem: Fact-Time-Affect Anchored Memory for Low-Density Long-Term Dialogue
Aug 17, 2026Chang Liu, Junyi Zhao, Shuyi Zhang +4Long-Term Conversational Memory Agent Memory Management
School of Information Science and Engineering, Lanzhou University
LycheeMemory V2: Efficient Long-Term Memory for LLM Agents via Semantic Segment-Level Consolidation
Aug 13, 2026Dongfang Li, Zixuan Liu, Junmai Wang +5LLM Agent Memory Persistent Memory for Language Models
Harbin Institute of Technology, Shenzhen
The Sleeping Agent: What Gist-Based Context Compression Loses and Why
Aug 12, 2026Nicholas E. KyrkewoodTemporal Reasoning in Language Models Language Modeling
Independent Researcher
Don't Scroll Back: Missing-Evidence Memory for Streaming Dialogue Summarization
Aug 10, 2026Hyangsuk Min, Hwanjun SongConversational Memory Text Summarization
KAIST
Private Etymology: Designing Relational Reuse of Shared Symbols in Long-Term Human-AI Interaction
Aug 9, 2026Miki UenoHuman-AI Interaction Long-Term Conversational Memory
The Kyoto College of Graduate Studies for Informatics
Mitigating Over-Personalization in LLMs via Structured Memory
Aug 8, 2026Hakeem Hannoon, Andrew Zhao, Mihir Narayan +2LLM Sycophancy Persistent Memory for Language Models
University of Saskatchewan · University of California–Irvine · University of Wisconsin–Madison +2
SodaMem: Evidence-Grounded Temporal Graph Memory for LLM Agents
Aug 8, 2026Fengrong Wan, Chengcan Wu, Ningtao LyuMemory Agent Benchmarks Graph-Based Agent Memory
1Peking University
Hierarchical Graph Memory for LLM Agents with Path-level Localization and Rewrite
Aug 5, 2026Xiawei Yue, Boran Wang, Xiaoqing Zhang +2LLM Agent Memory Graph-Based Agent Memory
Nankai University, Tianjin, China · Zhongguancun Academy, Beijing, China · Beihang University, Beijing, China
LeanMem: Simple and Efficient Long-Term Memory for LLM Agents
Aug 4, 2026Yuxin Liao, Le Wu, Min Hou +3LLM Agent Memory Persistent Memory for Language Models
Hefei University of Technology
DP-MemView: A Memory Interface for Attribute-Level Transcript Privacy in Long-Term LLM Agents
Aug 4, 2026Jong Wook Kim, Byoungjae Min, Kennedy Edemacu +3Privacy-Preserving Language Models LLM Agent Memory
Department of Computer Science, Sangmyung University, Seoul, Republic of Korea · College of Staten Island, The City University of New York, New York, NY, USA · Sookmyung Women’s University, Seoul, Republic of Korea +2
MemSIF: From Structured Interactions to Dual-Track Fact Memory for LLM Agents
Aug 3, 2026YuFei Luo, Xiucheng Xu, Zhen YangLLM Agent Memory Long-Term Conversational Memory
Beijing University of Posts and Telecommunications · University of Chinese Academy of Sciences
PGMem: Tightly Coupled Persona-Memory Graph for Lifelong Personalized Agents
Aug 3, 2026Wonjun Choi, Yerim Kim, Yukyung Lee +1Agent Memory LLM Personalization
Korea University, Seoul, Korea · Boston University, Boston, USA
TrajWiki: Source-Grounded Memory Trajectories for Long-Horizon Dialogue Agents
Aug 2, 2026Jingyu Sun, Yuyang Xue, Mingyang Li +9Agent Memory LLM Agent Memory
1The University of Manchester · 2The University of Melbourne · 3The University of Edinburgh +2
Beyond Retrieval: Analytic Memory for Multimodal Agents
Jul 31, 2026Zhoujin Tian, Hao Zhang, Yao Tian +4Multimodal Memory Long-Term Conversational Memory
HKUST · ByteDance
ChronoMem: Version Control and Semantic Rollback for Large Language Model Agent Memory
Jul 30, 2026Yongye Su, Wujiang Xu, Chaoji Zuo +1LLM Agent Memory Long-Term Conversational Memory
Purdue University · USA · Rutgers University
CMT-RAG: Complementary Memory Traces for Multi-turn Multi-hop RAG
Jul 29, 2026Lang Zhou, Yingjian Chen, Shuxuan Li +2Conversational Memory Retrieval-Augmented Generation
Sun Yat-sen University · Shenzhen Loop Area Institude · The University of Hong Kong
MemLens: A Value-Aware Memory Management System with Interactive Analytics for LLM-based Agents
Jul 28, 2026Shuyue Wei, Chang Liu, Zimu Zhou +2LLM Agent Memory Long-Term Conversational Memory
C-FAIR & School of Software, Shandong University · SKLCCSE Lab, Beihang University · Department of Data Science, City University of Hong Kong

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Relevance Is Not Sufficiency: What Actually Closes the Evidence Gap in Long-Term Memory QA

Yufeng Li, Shuxin Li, Zhenhua Xu, Junxian Li+6

East China Normal University, Shanghai, China · Nanyang Technological University, Singapore · Zhejiang University, Hangzhou, China+3

Long-Term Conversational Memory Agent Memory Management Evidence Retrieval

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LLM agents that interact with a user across many sessions accumulate histories that exceed their context window, so they store past interactions in an external memory and answer each question from a small set of retrieved records. Existing memory systems rank records by lexical or embedding relevance, yet the top-ranked memories can each be relevant while jointly omitting a complementary fact that the answer requires, especially for multi-session and temporal questions. Drawing on the distinction between relevance and sufficiency in legal evidence scholarship, we recast memory retrieval as constructing a sufficient memory set. To operationalize this view, we introduce a blinded LLM judgment over the retrieved set, together with Gold Hit and Turn Hit as evidence-coverage proxies. We then propose Budgeted Flat Reconstruction (BFR), which builds sufficient sets over a fixed flat memory store in two stages. Specifically, we first apply Formal Concept Analysis for Memory Selection (FCA-MS) to decompose the question into information requirements and select a compact candidate subset that jointly covers them. Then, we repeatedly acquire unseen records through deeper text search or complementary entity and session views, stopping when the budget is exhausted. Experiments on LoCoMo and LongMemEval-S show that BFR outperforms same-store adaptations of recent agent-memory systems in both answer quality and evidence coverage. Specifically, on LongMemEval-S it raises judged accuracy from 72.4% to 82.2% and Turn Hit to 91.4%.

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