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We propose an extension of Hybrid I/O Automata (HIOAs) to model agent systems and their implicit communication through perturbation of the environment, like localization of objects or radio signals diffusion and detection. To this end we…

Formal Languages and Automata Theory · Computer Science 2012-10-10 Marta Capiluppi , Roberto Segala

Reinforcement learning (RL) can refine Vision-Language-Action (VLA) policies beyond behavior cloning, but real-world RL remains expensive due to extensive rollouts, resets, supervision, and safety risks. Action-conditioned video world…

Robotics · Computer Science 2026-05-26 Xiaokang Liu , Zechen Bai , Hai Ci , Kevin Yuchen Ma , Mike Zheng Shou

Dynamical systems theory has long provided a foundation for understanding evolving phenomena across scientific domains. Yet, the application of this theory to complex real-world systems remains challenging due to issues in mathematical…

Machine Learning · Computer Science 2024-11-05 Samuel A. Moore , Brian P. Mann , Boyuan Chen

Large Language Models (LLMs) as agents often struggle in out-of-distribution (OOD) scenarios. Real-world environments are complex and dynamic, governed by task-specific rules and stochasticity, which makes it difficult for LLMs to ground…

Machine Learning · Computer Science 2025-10-20 Shiqi Chen , Tongyao Zhu , Zian Wang , Jinghan Zhang , Kangrui Wang , Siyang Gao , Teng Xiao , Yee Whye Teh , Junxian He , Manling Li

To solve control problems via model-based reasoning or planning, an agent needs to know how its actions affect the state of the world. The actions an agent has at its disposal often change the state of the environment in systematic ways.…

Machine Learning · Computer Science 2024-11-04 Tankred Saanum , Peter Dayan , Eric Schulz

Humans leverage the dynamics of the environment and their own bodies to accomplish challenging tasks such as grasping an object while walking past it or pushing off a wall to turn a corner. Such tasks often involve switching dynamics as the…

Robotics · Computer Science 2021-03-29 Saumya Saxena , Alex LaGrassa , Oliver Kroemer

Unified multimodal models can encode visual understanding and image generation within a shared backbone, yet understanding does not automatically translate into control: models may infer objects, relations, or knowledge cues but fail to…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Fuxiang Zhai , Sixiang Chen , Yingjin Li , Shuaibo Li , Jianyu Lai , Tengjun Huang , Lei Zhu

Large Language Models (LLMs) handle physical commonsense information inadequately. As a result of being trained in a disembodied setting, LLMs often fail to predict an action's outcome in a given environment. However, predicting the effects…

Computation and Language · Computer Science 2023-02-06 Gautier Dagan , Frank Keller , Alex Lascarides

World models learn the consequences of actions in vision-based interactive systems. However, in practical scenarios such as autonomous driving, there commonly exists noncontrollable dynamics independent of the action signals, making it…

Machine Learning · Computer Science 2022-12-20 Minting Pan , Xiangming Zhu , Yunbo Wang , Xiaokang Yang

Large language models (LLMs) have achieved strong performance in language-centric tasks. However, in agentic settings, LLMs often struggle to anticipate action consequences and adapt to environment dynamics, highlighting the need for…

Computation and Language · Computer Science 2026-02-10 Xiao Yu , Baolin Peng , Ruize Xu , Yelong Shen , Pengcheng He , Suman Nath , Nikhil Singh , Jiangfeng Gao , Zhou Yu

The development of Vision-Language-Action (VLA) models has been significantly accelerated by pre-trained Vision-Language Models (VLMs). However, most existing end-to-end VLAs treat the VLM primarily as a multimodal encoder, directly mapping…

Robotics · Computer Science 2026-04-29 Yi Chen , Yuying Ge , Hui Zhou , Mingyu Ding , Yixiao Ge , Xihui Liu

Animating and simulating crowds using an agent-based approach is a well-established area where every agent in the crowd is individually controlled such that global human-like behaviour emerges. We observe that human navigation and movement…

Artificial Intelligence · Computer Science 2025-08-22 Yibo Liu , Liam Shatzel , Brandon Haworth , Teseo Schneider

General-purpose robots must master long-horizon manipulation, defined as tasks involving multiple kinematic structure changes (e.g., attaching or detaching objects) in unstructured environments. While Vision-Language-Action (VLA) models…

Robotics · Computer Science 2026-02-26 Yue Yang , Shuo Cheng , Yu Fang , Homanga Bharadhwaj , Mingyu Ding , Gedas Bertasius , Daniel Szafir

To interact effectively with humans in the real world, it is important for agents to understand language that describes the dynamics of the environment--that is, how the environment behaves--rather than just task instructions specifying…

Computation and Language · Computer Science 2025-12-01 Anh Nguyen , Stefan Lee

Vision-Language-Action (VLA) models have shown strong potential for general-purpose robotic manipulation, but their reliance on expert demonstrations limits their ability to learn from failures and perform self-corrections. Reinforcement…

Robotics · Computer Science 2025-11-13 Fangqi Zhu , Zhengyang Yan , Zicong Hong , Quanxin Shou , Xiao Ma , Song Guo

Reinforcement learning from large-scale offline datasets provides us with the ability to learn policies without potentially unsafe or impractical exploration. Significant progress has been made in the past few years in dealing with the…

Machine Learning · Computer Science 2021-08-04 Philip J. Ball , Cong Lu , Jack Parker-Holder , Stephen Roberts

An effective way to model the complex real world is to view the world as a composition of basic components of objects and transformations. Although humans through development understand the compositionality of the real world, it is…

Computer Vision and Pattern Recognition · Computer Science 2022-03-23 T. Takada , W. Shimaya , Y. Ohmura , Y. Kuniyoshi

Active systems across scales, ranging from molecular machines to human crowds, are usually modeled as assemblies of self-propelled particles driven by internally generated forces. However, these models often assume memoryless dynamics and…

Statistical Mechanics · Physics 2025-12-10 Marc Besse , Raphaël Voituriez

World models enable agents to plan by imagining future states, but existing approaches operate from a single viewpoint, typically egocentric, even when other perspectives would make planning easier; navigation, for instance, benefits from a…

Computer Vision and Pattern Recognition · Computer Science 2026-02-10 Rishabh Sharma , Gijs Hogervorst , Wayne E. Mackey , David J. Heeger , Stefano Martiniani

While a general embodied agent must function as a unified system, current methods are built on isolated models for understanding, world modeling, and control. This fragmentation prevents unifying multimodal generative capabilities and…

Computer Vision and Pattern Recognition · Computer Science 2025-12-29 Hongzhe Bi , Hengkai Tan , Shenghao Xie , Zeyuan Wang , Shuhe Huang , Haitian Liu , Ruowen Zhao , Yao Feng , Chendong Xiang , Yinze Rong , Hongyan Zhao , Hanyu Liu , Zhizhong Su , Lei Ma , Hang Su , Jun Zhu