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Reasoning in a complex and ambiguous environment is a key goal for Reinforcement Learning (RL) agents. While some sophisticated RL agents can successfully solve difficult tasks, they require a large amount of training data and often…

Machine Learning · Computer Science 2023-02-03 Ishita Dasgupta , Christine Kaeser-Chen , Kenneth Marino , Arun Ahuja , Sheila Babayan , Felix Hill , Rob Fergus

LLM-based agents represent a paradigm shift in AI, enabling autonomous systems to plan, reason, and use tools while interacting with dynamic environments. This paper provides the first comprehensive survey of evaluation methods for these…

Artificial Intelligence · Computer Science 2026-04-24 Asaf Yehudai , Lilach Eden , Alan Li , Guy Uziel , Yilun Zhao , Roy Bar-Haim , Arman Cohan , Michal Shmueli-Scheuer

Large language models (LLMs) provide robots with powerful contextual reasoning abilities and a natural human interface. Yet, current LLM-enabled robots typically depend on cloud-hosted models, limiting their usability in environments with…

Large language models (LLMs) have shown promise in providing scalable mental health support, while evaluating their counseling capability remains crucial to ensure both efficacy and safety. Existing evaluations are limited by the static…

Computation and Language · Computer Science 2025-05-07 Shijing Zhu , Zhuang Chen , Guanqun Bi , Binghang Li , Yaxi Deng , Dazhen Wan , Libiao Peng , Xiyao Xiao , Rongsheng Zhang , Tangjie Lv , Zhipeng Hu , FangFang Li , Minlie Huang

Time series classification (TSC) spans diverse application scenarios, yet labeled data are often scarce, making task-specific training costly and inflexible. Recent reasoning-oriented large language models (LLMs) show promise in…

Artificial Intelligence · Computer Science 2026-05-04 Songyuan Sui , Zihang Xu , Xia Hu

Multi-agent systems with smaller language models (SLMs) present a viable alternative to single agent systems powered by large language models (LLMs) for addressing complex problems. In this work, we study how these alternatives compare in…

Large Language Model (LLM) based agents have proved their ability to perform complex tasks like humans. However, there is still a large gap between open-sourced LLMs and commercial models like the GPT series. In this paper, we focus on…

Artificial Intelligence · Computer Science 2025-02-25 Dayuan Fu , Keqing He , Yejie Wang , Wentao Hong , Zhuoma Gongque , Weihao Zeng , Wei Wang , Jingang Wang , Xunliang Cai , Weiran Xu

LLMs have recently demonstrated strong potential in simulating online shopper behavior. Prior work has improved action prediction by applying SFT on action traces with LLM-generated rationales, and by leveraging RL to further enhance…

Computers and Society · Computer Science 2025-10-23 Yimeng Zhang , Jiri Gesi , Ran Xue , Tian Wang , Ziyi Wang , Yuxuan Lu , Sinong Zhan , Huimin Zeng , Qingjun Cui , Yufan Guo , Jing Huang , Mubarak Shah , Dakuo Wang

For agentic systems to use external tools to solve complex, long-horizon tasks, we need a large set of diverse and controllable tool-use environments. We introduce SynthTools, a fully LLM-based pipeline spanning the entire lifecycle:…

Artificial Intelligence · Computer Science 2026-05-28 Tommaso Castellani , Naimeng Ye , Daksh Mittal , Thomson Yen , Emmanouil Koukoumidis , William Zeng , Hongseok Namkoong

Recent research has turned to Reinforcement Learning (RL) to solve challenging decision problems, as an alternative to hand-tuned heuristics. RL can learn good policies without the need for modeling the environment's dynamics. Despite this…

Machine Learning · Computer Science 2023-01-30 Pouya Hamadanian , Malte Schwarzkopf , Siddartha Sen , Mohammad Alizadeh

Learning effective policies for real-world problems is still an open challenge for the field of reinforcement learning (RL). The main limitation being the amount of data needed and the pace at which that data can be obtained. In this paper,…

Machine Learning · Computer Science 2022-02-04 Miguel Suau , Jinke He , Matthijs T. J. Spaan , Frans A. Oliehoek

Large Language Model (LLM) agents significantly extend the capabilities of standalone LLMs, empowering them to interact with external tools (e.g., APIs, functions) and complete various tasks in a self-directed fashion. The challenge of tool…

Artificial Intelligence · Computer Science 2024-02-19 Weizhou Shen , Chenliang Li , Hongzhan Chen , Ming Yan , Xiaojun Quan , Hehong Chen , Ji Zhang , Fei Huang

As the strength of Large Language Models (LLMs) has grown over recent years, so too has interest in their use as the underlying models for autonomous agents. Although LLMs demonstrate emergent abilities and broad expertise across natural…

Artificial Intelligence · Computer Science 2024-12-06 Chris Sypherd , Vaishak Belle

Reinforcement Learning (RL) is essential for evolving Large Language Models (LLMs) into autonomous agents capable of long-horizon planning, yet a practical recipe for scaling RL in complex, multi-turn environments remains elusive. This…

Machine Learning · Computer Science 2026-03-24 Xixi Wu , Qianguo Sun , Ruiyang Zhang , Chao Song , Junlong Wu , Yiyan Qi , Hong Cheng

Directly training Large Language Models (LLMs) for Multi-Agent Systems (MAS) remains challenging due to intricate reward modeling, dynamic agent interactions, and demanding generalization requirements. This paper explores whether…

Artificial Intelligence · Computer Science 2025-06-03 Yufa Zhou , Shaobo Wang , Xingyu Dong , Xiangqi Jin , Yifang Chen , Yue Min , Kexin Yang , Xingzhang Ren , Dayiheng Liu , Linfeng Zhang

This paper introduces a new hybrid framework that combines Reinforcement Learning (RL) and Large Language Models (LLMs) to improve robotic manipulation tasks. By utilizing RL for accurate low-level control and LLMs for high level task…

Robotics · Computer Science 2026-04-01 Md Saad , Sajjad Hussain , Mohd Suhaib

Large Language Models (LLMs) serve not only as chatbots but as key components in agent systems, where their common-sense knowledge significantly impacts performance as language-based planners for situated or embodied action. We assess LLMs'…

Computation and Language · Computer Science 2025-06-30 Jonathan Jordan , Sherzod Hakimov , David Schlangen

Developing and validating psychometric scales requires large samples, multiple testing phases, and substantial resources. Recent advances in Large Language Models (LLMs) enable the generation of synthetic participant data by prompting…

Human-Computer Interaction · Computer Science 2025-12-30 Enrico Cipriani , Pavel Okopnyi , Danilo Menicucci , Simone Grassini

The utilization of Large Language Models (LLMs) to power human-like agents has shown remarkable potential in simulating individual mobility pattern. However, a significant gap remains in modeling cohorts of agents in dynamic and interactive…

Physics and Society · Physics 2026-03-16 Chengbo Zhang , Zuopeng Xiao

Multimodal large language models (MLLMs) have shown strong capabilities but remain limited to fixed modality pairs and require costly fine-tuning with large aligned datasets. Building fully omni-capable models that can integrate text,…

Artificial Intelligence · Computer Science 2025-11-06 Huawei Lin , Yunzhi Shi , Tong Geng , Weijie Zhao , Wei Wang , Ravender Pal Singh