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This paper presents the World-Action Model (WAM), an action-regularized world model that jointly reasons over future visual observations and the actions that drive state transitions. Unlike conventional world models trained solely via image…

Artificial Intelligence · Computer Science 2026-04-01 Yuci Han , Alper Yilmaz

World action models (WAMs) have emerged as a promising direction for robot policy learning, as they can leverage powerful video backbones to model the future states. However, existing approaches often rely on separate action modules, or use…

Computer Vision and Pattern Recognition · Computer Science 2026-04-16 Haoyu Zhen , Zixian Gao , Qiao Sun , Yilin Zhao , Yuncong Yang , Yilun Du , Pengsheng Guo , Tsun-Hsuan Wang , Yi-Ling Qiao , Chuang Gan

General-purpose world models promise scalable policy evaluation, optimization, and planning, yet achieving the required level of robustness remains challenging. Unlike policy learning, which primarily focuses on optimal actions, a world…

Machine Learning · Computer Science 2026-04-03 Yuejiang Liu , Fan Feng , Lingjing Kong , Weifeng Lu , Jinzhou Tang , Kun Zhang , Kevin Murphy , Chelsea Finn , Yilun Du

Training robot policies within a learned world model is trending due to the inefficiency of real-world interactions. The established image-based world models and policies have shown prior success, but lack robust geometric information that…

Robotics · Computer Science 2025-09-18 Guanxing Lu , Baoxiong Jia , Puhao Li , Yixin Chen , Ziwei Wang , Yansong Tang , Siyuan Huang

World Action Models (WAMs) have emerged as a promising alternative to Vision-Language-Action (VLA) models for embodied control because they explicitly model how visual observations may evolve under action. Most existing WAMs follow an…

Computer Vision and Pattern Recognition · Computer Science 2026-03-24 Tianyuan Yuan , Zibin Dong , Yicheng Liu , Hang Zhao

World models aim to learn action-controlled future prediction and have proven essential for the development of intelligent agents. However, most existing world models rely heavily on substantial action-labeled data and costly training,…

Artificial Intelligence · Computer Science 2025-06-03 Shenyuan Gao , Siyuan Zhou , Yilun Du , Jun Zhang , Chuang Gan

World Action Models (WAMs) have emerged as a promising paradigm for robot control by modeling physical dynamics. Current WAMs generally follow two paradigms: the "Imagine-then-Execute" approach, which uses video prediction to infer actions…

Imitation learning has emerged as a promising approach towards building generalist robots. However, scaling imitation learning for large robot foundation models remains challenging due to its reliance on high-quality expert demonstrations.…

Robotics · Computer Science 2025-05-26 Chuning Zhu , Raymond Yu , Siyuan Feng , Benjamin Burchfiel , Paarth Shah , Abhishek Gupta

World Action Models (WAMs) have recently emerged as a promising paradigm for robotic manipulation by jointly predicting future visual observations and future actions. However, current WAMs typically execute a fixed number of predicted…

Robotics · Computer Science 2026-05-12 Rui Wang , Yue Zhang , Jiehong Lin , Kuncheng Luo , Jianan Wang , Zhongrui Wang , Xiaojuan Qi

A plausible scene evolution depends on the maneuver being considered, while a good maneuver depends on how the scene may evolve. Existing World Action Models (WAMs) largely miss this reciprocity, treating world prediction and action…

Computer Vision and Pattern Recognition · Computer Science 2026-05-13 Hongbo Lu , Liang Yao , Chenghao He , Haoyu Wang , Xiang Gu , Xianfei Li , Wenlong Liao , Tao He , Pai Peng

Recently, world-action models (WAM) have emerged to bridge vision-language-action (VLA) models and world models, unifying their reasoning and instruction-following capabilities and spatio-temporal world modeling. However, existing WAM…

Computer Vision and Pattern Recognition · Computer Science 2026-04-03 Yang Zhou , Xiaofeng Wang , Hao Shao , Letian Wang , Guosheng Zhao , Jiangnan Shao , Jiagang Zhu , Tingdong Yu , Zheng Zhu , Guan Huang , Steven L. Waslander

World Action Models (WAMs) enable decision-making through imagined rollouts by predicting future observations and actions. However, the reliability of these imagined futures remains under-examined: is a generated future merely visually…

Robotics · Computer Science 2026-05-11 Bo-Kai Ruan , Teng-Fang Hsiao , Ling Lo , Hong-Han Shuai

Robot action planning in the real world is challenging as it requires not only understanding the current state of the environment but also predicting how it will evolve in response to actions. Vision-language-action (VLA), which repurpose…

Post-training is essential for turning pretrained generalist robot policies into reliable task-specific controllers, but existing human-in-the-loop pipelines remain tied to physical execution: each correction requires robot time, scene…

Robotics · Computer Science 2026-05-06 Yaxuan Li , Zhongyi Zhou , Yefei Chen , Yanjiang Guo , Jiaming Liu , Shanghang Zhang , Jianyu Chen , Yichen Zhu

Vision-language-action (VLA) models that directly predict multi-step action chunks from current observations face inherent limitations due to constrained scene understanding and weak future anticipation capabilities. In contrast, video…

Action-conditioned video prediction models (often referred to as world models) have shown strong potential for robotics applications, but existing approaches are often slow and struggle to capture physically consistent interactions over…

Action-conditioned video models offer a promising path to building general-purpose robot simulators that can improve directly from data. Yet, despite training on large-scale robot datasets, current state-of-the-art video models still…

World models derived from large-scale video generative pre-training have emerged as a promising paradigm for generalist robot policy learning. However, standard approaches often focus on high-fidelity RGB video prediction, this can result…

Despite remarkable progress in driving world models, their potential for autonomous systems remains largely untapped: the world models are mostly learned for world simulation and decoupled from trajectory planning. While recent efforts aim…

Computer Vision and Pattern Recognition · Computer Science 2025-11-26 Zhida Zhao , Talas Fu , Yifan Wang , Lijun Wang , Huchuan Lu

Pretrained foundation models have become an important basis for end-to-end autonomous driving. In contrast to vision-language models pretrained primarily on static image-text pairs, video generative models capture temporal dynamics and…

Computer Vision and Pattern Recognition · Computer Science 2026-05-28 Chen Shi , Jinrui Xu , Shaoshuai Shi , Kehua Sheng , Bo Zhang , Li Jiang
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