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While long-term memory is essential for intelligent agents to maintain consistent historical awareness, the accumulation of extensive interaction data often leads to performance bottlenecks. Naive storage expansion increases retrieval noise…

Artificial Intelligence · Computer Science 2026-04-03 Junming Liu , Yifei Sun , Weihua Cheng , Haodong Lei , Yuqi Li , Yirong Chen , Ding Wang

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

Although long-term memory systems have made substantial progress in recent years, they still exhibit clear limitations in adaptability, scalability, and self-evolution under continuous interaction settings. Inspired by cognitive theories,…

Artificial Intelligence · Computer Science 2026-01-13 Ningning Zhang , Xingxing Yang , Zhizhong Tan , Weiping Deng , Wenyong Wang

Large language model (LLM) agents are constrained by limited context windows, necessitating external memory systems for long-term information understanding. Current memory-augmented agents typically depend on pre-defined instructions and…

Computation and Language · Computer Science 2025-10-01 Yu Wang , Ryuichi Takanobu , Zhiqi Liang , Yuzhen Mao , Yuanzhe Hu , Julian McAuley , Xiaojian Wu

User simulation is important for developing and evaluating human-centered AI, yet current student simulation in educational applications has significant limitations. Existing approaches focus on single learning experiences and do not…

Computers and Society · Computer Science 2026-01-27 Zhengyuan Liu , Stella Xin Yin , Bryan Chen Zhengyu Tan , Roy Ka-Wei Lee , Guimei Liu , Dion Hoe-Lian Goh , Wenya Wang , Nancy F. Chen

Multimodal Large Language Models (MLLMs) serve as daily assistants for millions. However, their ability to generate responses aligned with individual preferences remains limited. Prior approaches enable only static, single-turn…

Computation and Language · Computer Science 2026-04-16 Chang Nie , Chaoyou Fu , Yifan Zhang , Haihua Yang , Caifeng Shan

The emergence of large language models (LLMs) has revolutionized the capabilities of text comprehension and generation. Multi-modal generation attracts great attention from both the industry and academia, but there is little work on…

Information Retrieval · Computer Science 2024-04-16 Xiaoteng Shen , Rui Zhang , Xiaoyan Zhao , Jieming Zhu , Xi Xiao

Prevalent retrieval-based tool-use pipelines struggle with a dual semantic challenge: their retrievers often employ encoders that fail to capture complex semantics, while the Large Language Model (LLM) itself lacks intrinsic tool knowledge…

Artificial Intelligence · Computer Science 2026-01-30 Bowen Fang , Wen Ye , Yunyue Su , Jinghao Zhang , Qiang Liu , Yesheng Liu , Xin Sun , Shu Wu , Jiabing Yang , Baole Wei , Liang Wang

While "Intent-oriented programming" (or "Vibe Coding") redefines software engineering, existing code agents remain tethered to static code snapshots. Consequently, they struggle to model the critical information embedded in the temporal…

Machine Learning · Computer Science 2026-03-17 Yi-Xuan Deng , Xiaoqin Liu , Yi Zhang , Guo-Wei Yang , Shuojin Yang

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

Tips, as a compacted and concise form of reviews, were paid less attention by researchers. In this paper, we investigate the task of tips generation by considering the `persona' information which captures the intrinsic language style of the…

Computation and Language · Computer Science 2019-03-14 Piji Li , Zihao Wang , Lidong Bing , Wai Lam

User behavior modeling lies at the heart of personalized applications like recommender systems. With LLM-based agents, user preference representation has evolved from latent embeddings to semantic memory. While existing memory mechanisms…

Information Retrieval · Computer Science 2026-01-27 Yuxin Liao , Le Wu , Min Hou , Yu Wang , Han Wu , Meng Wang

Large Language Models (LLMs) based agents excel at diverse tasks, yet they suffer from brittle procedural memory that is manually engineered or entangled in static parameters. In this work, we investigate strategies to endow agents with a…

Computation and Language · Computer Science 2026-04-16 Runnan Fang , Yuan Liang , Xiaobin Wang , Jialong Wu , Shuofei Qiao , Pengjun Xie , Fei Huang , Huajun Chen , Ningyu Zhang

Believable proxies of human behavior can empower interactive applications ranging from immersive environments to rehearsal spaces for interpersonal communication to prototyping tools. In this paper, we introduce generative…

Human-Computer Interaction · Computer Science 2023-08-08 Joon Sung Park , Joseph C. O'Brien , Carrie J. Cai , Meredith Ringel Morris , Percy Liang , Michael S. Bernstein

Despite rapid progress in large-scale language and vision models, AI agents still suffer from a fundamental limitation: they cannot remember. Without reliable memory, agents catastrophically forget past experiences, struggle with…

Humans routinely rely on memory to perform tasks, yet most robot policies lack this capability; our goal is to endow robot policies with the same ability. Naively conditioning on long observation histories is computationally expensive and…

Robotics · Computer Science 2025-10-24 Ajay Sridhar , Jennifer Pan , Satvik Sharma , Chelsea Finn

Generative AI has enabled novice designers to quickly create professional-looking visual representations for product concepts. However, novices have limited domain knowledge that could constrain their ability to write prompts that…

Human-Computer Interaction · Computer Science 2026-03-30 Sirui Tao , Ivan Liang , Cindy Peng , Zhiqing Wang , Srishti Palani , Steven P. Dow

Character image animation, which synthesizes videos of reference characters driven by pose sequences, has advanced rapidly but remains largely limited to single-human settings. Existing methods struggle to generalize to multi-humanoid…

Computer Vision and Pattern Recognition · Computer Science 2026-02-17 Xirui Hu , Yanbo Ding , Jiahao Wang , Tingting Shi , Yali Wang , Guo Zhi Zhi , Weizhan Zhang

Despite their impressive visual fidelity, existing personalized image generators lack interactive control over spatial composition and scale poorly to multiple humans. To address these limitations, we present LayerComposer, an interactive…

Human emotions are essentially molded by lived experiences, from which we construct personalised meaning. The engagement in such meaning-making process has been practiced as an intervention in various psychotherapies to promote wellness.…

Human-Computer Interaction · Computer Science 2024-03-06 Qian Wan , Xin Feng , Yining Bei , Zhiqi Gao , Zhicong Lu