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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

In this work, we introduce MedAgentSim, an open-source simulated clinical environment with doctor, patient, and measurement agents designed to evaluate and enhance LLM performance in dynamic diagnostic settings. Unlike prior approaches, our…

Computation and Language · Computer Science 2025-10-02 Mohammad Almansoori , Komal Kumar , Hisham Cholakkal

LLM-based conversational agents still struggle to maintain coherent, personalized interaction over many sessions: fixed context windows limit how much history can be kept in view, and most external memory approaches trade off between coarse…

Computation and Language · Computer Science 2025-12-12 Sizhe Zhou , Jiawei Han

Large language models (LLMs) have recently emerged as promising tools for solving challenging robotic tasks, even in the presence of action and observation uncertainties. Recent LLM-based decision-making methods (also referred to as…

Artificial Intelligence · Computer Science 2024-09-20 Abhinav Jain , Chris Jermaine , Vaibhav Unhelkar

Recommender systems are central to online services, enabling users to navigate through massive amounts of content across various domains. However, their evaluation remains challenging due to the disconnect between offline metrics and online…

Information Retrieval · Computer Science 2026-04-14 Nicolas Bougie , Gian Maria Marconi , Xiaotong Ye , Narimasa Watanabe

Inspired by the insights in cognitive science with respect to human memory and reasoning mechanism, a novel evolvable LLM-based (Large Language Model) agent framework is proposed as REMEMBERER. By equipping the LLM with a long-term…

Computation and Language · Computer Science 2023-10-31 Danyang Zhang , Lu Chen , Situo Zhang , Hongshen Xu , Zihan Zhao , Kai Yu

Memory enables Large Language Model (LLM) agents to perceive, store, and use information from past dialogues, which is essential for personalization. However, existing methods fail to properly model the temporal dimension of memory in two…

Artificial Intelligence · Computer Science 2026-01-13 Miao Su , Yucan Guo , Zhongni Hou , Long Bai , Zixuan Li , Yufei Zhang , Guojun Yin , Wei Lin , Xiaolong Jin , Jiafeng Guo , Xueqi Cheng

Recommender systems are the cornerstone of today's information dissemination, yet a disconnect between offline metrics and online performance greatly hinders their development. Addressing this challenge, we envision a recommendation…

Information Retrieval · Computer Science 2024-11-11 An Zhang , Yuxin Chen , Leheng Sheng , Xiang Wang , Tat-Seng Chua

This paper presents a novel application of large language models (LLMs) to enhance user comprehension of privacy policies through an interactive dialogue agent. We demonstrate that LLMs significantly outperform traditional models in tasks…

Human-Computer Interaction · Computer Science 2024-10-17 Bolun Sun , Yifan Zhou , Haiyun Jiang

With the growing demand for intelligent in-vehicle experiences, vehicle-based agents are evolving from simple assistants to long-term companions. This evolution requires agents to continuously model multi-user preferences and make reliable…

Artificial Intelligence · Computer Science 2026-03-26 Yuhao Chen , Yi Xu , Xinyun Ding , Xiang Fang , Shuochen Liu , Luxi Lin , Qingyu Zhang , Ya Li , Quan Liu , Tong Xu

Memory systems are key components that enable AI systems such as LLMs and AI agents to achieve long-term learning and sustained interaction. However, during memory storage and retrieval, these systems frequently exhibit memory…

Computation and Language · Computer Science 2026-01-06 Ding Chen , Simin Niu , Kehang Li , Peng Liu , Xiangping Zheng , Bo Tang , Xinchi Li , Feiyu Xiong , Zhiyu Li

We present SalesSim, a framework and testbed for evaluating the ability of Multimodal Large Language Models (MLLMs) to simulate realistic, persona-driven customer behavior in multi-turn, multi-modal, tool-augmented online retail…

Computation and Language · Computer Science 2026-05-12 Yada Pruksachatkun , Elaine Wan , Lyanna Chen , Kai-Wei Chang , Chien-Sheng Wu

Long-horizon LLM agents rely on persistent memory to support interactions across sessions, yet existing memory systems often retrieve context using semantic similarity or broad history inclusion, treating retrieved memories as uniformly…

Artificial Intelligence · Computer Science 2026-05-19 Saksham Sahai Srivastava

LLM-based user simulation is the primary mechanism for end-to-end agent evaluation, yet simulated users are poor proxies for real humans: unconstrained LLM defaults produce a Formalism Ceiling (style match rates of 6-8% against real users),…

Human-Computer Interaction · Computer Science 2026-05-21 Ming Zhu , Juntao Tan , Rithesh Murthy , Jielin Qiu , Liangwei Yang , Wenting Zhao , Silvio Savarese , Shelby Heinecke , Huan Wang

Large language models (LLMs) have shown strong performance on standardized social science instruments, but their value for product discovery remains unclear. We investigate whether interview-informed generative agents can simulate user…

Human-Computer Interaction · Computer Science 2026-04-01 Zichao Wang , Alexa Siu

Simulating nuanced user experiences within complex interactive search systems poses distinct challenge for traditional methodologies, which often rely on static user proxies or, more recently, on standalone large language model (LLM) agents…

Information Retrieval · Computer Science 2026-03-02 Saber Zerhoudi , Michael Granitzer

Deep research agents (DRAs) integrate LLM reasoning with external tools. Memory systems enable DRAs to leverage historical experiences, which are essential for efficient reasoning and autonomous evolution. Existing methods rely on…

Artificial Intelligence · Computer Science 2026-04-21 Jingyang Qiao , Weicheng Meng , Yu Cheng , Zhihang Lin , Zhizhong Zhang , Xin Tan , Jingyu Gong , Kun Shao , Yuan Xie

Large Language Models (LLMs) have demonstrated impressive fluency and reasoning capabilities, but their potential for misuse has raised growing concern. In this paper, we present ScamAgent, an autonomous multi-turn agent built on top of…

Cryptography and Security · Computer Science 2026-01-15 Sanket Badhe

Significant advancements have occurred in the application of Large Language Models (LLMs) for social simulations. Despite this, their abilities to perform teaming in task-oriented social events are underexplored. Such capabilities are…

Artificial Intelligence · Computer Science 2025-08-18 Yuan Li , Lichao Sun , Yixuan Zhang

Large Language Model (LLM)-based agent simulation has emerged as a promising approach to meet the increasing demand for real-time and rigorous evaluation in modern recommender systems. A typical LLM-driven simulation framework comprises…

Information Retrieval · Computer Science 2026-05-14 Xinye Wanyan , Chenglong Ma , Danula Hettiachchi , Ziqi Xu , Jeffrey Chan