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Large language models (LLMs)-empowered web agents enables automating complex, real-time web navigation tasks in enterprise environments. However, existing web agents relying on supervised fine-tuning (SFT) often struggle with generalization…

Computation and Language · Computer Science 2025-06-10 Yuchen Zhuang , Di Jin , Jiaao Chen , Wenqi Shi , Hanrui Wang , Chao Zhang

While reinforcement learning (RL) has demonstrated remarkable success in enhancing large language models (LLMs), it has primarily focused on single-turn tasks such as solving math problems. Training effective web agents for multi-turn…

Computation and Language · Computer Science 2025-10-10 Zhepei Wei , Wenlin Yao , Yao Liu , Weizhi Zhang , Qin Lu , Liang Qiu , Changlong Yu , Puyang Xu , Chao Zhang , Bing Yin , Hyokun Yun , Lihong Li

The past years have seen Large Language Models (LLMs) strive not only as generative models but also as agents solving textual sequential decision-making tasks. When facing complex environments where their zero-shot abilities are…

Machine Learning · Computer Science 2026-01-30 Loris Gaven , Clement Romac , Thomas Carta , Sylvain Lamprier , Olivier Sigaud , Pierre-Yves Oudeyer

Large Language Model (LLM) web agents often struggle with long-horizon web navigation and web task completion in new websites, producing inefficient action sequences unless fine-tuned on environment-specific data. We show that…

Standard reinforcement learning (RL) for large language model (LLM) agents typically optimizes extrinsic rewards, prioritizing isolated task completion over continual adaptation. Consequently, agents often converge to suboptimal policies…

Artificial Intelligence · Computer Science 2026-03-31 Xiaoying Zhang , Zichen Liu , Yipeng Zhang , Xia Hu , Wenqi Shao

Online reinforcement learning in complex tasks is time-consuming, as massive interaction steps are needed to learn the optimal Q-function.Vision-language action (VLA) policies represent a promising direction for solving diverse tasks;…

Machine Learning · Computer Science 2025-09-26 Xiefeng Wu , Jing Zhao , Shu Zhang , Mingyu Hu

Offline-to-online reinforcement learning (RL) aims to integrate the complementary strengths of offline and online RL by pre-training an agent offline and subsequently fine-tuning it through online interactions. However, recent studies…

With recent advancements in large language models, web agents have been greatly improved. However, dealing with complex and dynamic web environments requires more advanced planning and search abilities. Previous studies usually adopt a…

Computation and Language · Computer Science 2026-01-16 Zhisong Zhang , Tianqing Fang , Kaixin Ma , Wenhao Yu , Hongming Zhang , Haitao Mi , Dong Yu

Recent research looks to harness the general knowledge and reasoning of large language models (LLMs) into agents that accomplish user-specified goals in interactive environments. Vision-language models (VLMs) extend LLMs to multi-modal data…

Machine Learning · Computer Science 2025-05-07 Jake Grigsby , Yuke Zhu , Michael Ryoo , Juan Carlos Niebles

Online Network Resource Allocation (ONRA) for service provisioning is a fundamental problem in communication networks. As a sequential decision-making under uncertainty problem, it is promising to approach ONRA via Reinforcement Learning…

Networking and Internet Architecture · Computer Science 2021-10-19 Bahador Bakhshi , Josep Mangues-Bafalluy

Safe navigation is essential for autonomous systems operating in hazardous environments. Traditional planning methods excel at long-horizon tasks but rely on a predefined graph with fixed distance metrics. In contrast, safe Reinforcement…

Robotics · Computer Science 2025-09-12 Meng Feng , Viraj Parimi , Brian Williams

Pre-trained large language models (LLMs) have recently achieved better generalization and sample efficiency in autonomous web automation. However, the performance on real-world websites has still suffered from (1) open domainness, (2)…

Machine Learning · Computer Science 2024-02-27 Izzeddin Gur , Hiroki Furuta , Austin Huang , Mustafa Safdari , Yutaka Matsuo , Douglas Eck , Aleksandra Faust

As Multimodal Large Language Models (MLLMs) mature, GUI agents are evolving from static interactions to complex navigation. While Reinforcement Learning (RL) has emerged as a promising paradigm for training MLLM agents on dynamic GUI tasks,…

Large language models (LLMs) have shown remarkable potential as autonomous agents, particularly in web-based tasks. However, existing LLM web agents heavily rely on expensive proprietary LLM APIs, while open LLMs lack the necessary…

Computation and Language · Computer Science 2025-01-28 Zehan Qi , Xiao Liu , Iat Long Iong , Hanyu Lai , Xueqiao Sun , Wenyi Zhao , Yu Yang , Xinyue Yang , Jiadai Sun , Shuntian Yao , Tianjie Zhang , Wei Xu , Jie Tang , Yuxiao Dong

The study of vision-and-language navigation (VLN) has typically relied on expert trajectories, which may not always be available in real-world situations due to the significant effort required to collect them. On the other hand, existing…

Computer Vision and Pattern Recognition · Computer Science 2024-03-28 Valay Bundele , Mahesh Bhupati , Biplab Banerjee , Aditya Grover

Recent advancements in large language models (LLMs) have enabled understanding webpage contexts, product details, and human instructions. Utilizing LLMs as the foundational architecture for either reward models or policies in reinforcement…

Machine Learning · Computer Science 2024-08-30 Shuang Feng , Grace Feng

The emergence of large language model (LLM)-based agents has significantly advanced the development of autonomous machine learning (ML) engineering. However, the dominant prompt-based paradigm exhibits limitations: smaller models lack the…

Computation and Language · Computer Science 2026-05-04 Zexi Liu , Jingyi Chai , Xinyu Zhu , Shuo Tang , Rui Ye , Bo Zhang , Lei Bai , Siheng Chen

Conservatism has led to significant progress in offline reinforcement learning (RL) where an agent learns from pre-collected datasets. However, as many real-world scenarios involve interaction among multiple agents, it is important to…

Machine Learning · Computer Science 2022-04-05 Ling Pan , Longbo Huang , Tengyu Ma , Huazhe Xu

Offline reinforcement learning (RL) allows for the training of competent agents from offline datasets without any interaction with the environment. Online finetuning of such offline models can further improve performance. But how should we…

Machine Learning · Computer Science 2023-03-31 Yicheng Luo , Jackie Kay , Edward Grefenstette , Marc Peter Deisenroth

Vision-language model (VLM) based GUI agents show promise for automating complex desktop and mobile tasks, but face significant challenges in applying reinforcement learning (RL): (1) slow multi-turn interactions with GUI environments for…

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