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World models power some of the most efficient reinforcement learning algorithms. In this work, we showcase that they can be harnessed for continual learning - a situation when the agent faces changing environments. World models typically…

To solve tasks in complex environments, robots need to learn from experience. Deep reinforcement learning is a common approach to robot learning but requires a large amount of trial and error to learn, limiting its deployment in the…

Robotics · Computer Science 2022-06-29 Philipp Wu , Alejandro Escontrela , Danijar Hafner , Ken Goldberg , Pieter Abbeel

Humans leverage rich internal models of the world to reason about the future, imagine counterfactuals, and adapt flexibly to new situations. In Reinforcement Learning (RL), world models aim to capture how the environment evolves in response…

Artificial Intelligence · Computer Science 2025-10-29 Léopold Maytié , Roland Bertin Johannet , Rufin VanRullen

The ability to predict future outcomes given control actions is fundamental for physical reasoning. However, such predictive models, often called world models, remains challenging to learn and are typically developed for task-specific…

Robotics · Computer Science 2025-02-04 Gaoyue Zhou , Hengkai Pan , Yann LeCun , Lerrel Pinto

We explore building generative neural network models of popular reinforcement learning environments. Our world model can be trained quickly in an unsupervised manner to learn a compressed spatial and temporal representation of the…

Machine Learning · Computer Science 2018-05-10 David Ha , Jürgen Schmidhuber

Much of model-based reinforcement learning involves learning a model of an agent's world, and training an agent to leverage this model to perform a task more efficiently. While these models are demonstrably useful for agents, every…

Neural and Evolutionary Computing · Computer Science 2019-11-01 C. Daniel Freeman , Luke Metz , David Ha

Language agents based on large language models (LLMs) have demonstrated great promise in automating web-based tasks. Recent work has shown that incorporating advanced planning algorithms, e.g., tree search, is advantageous over reactive…

Artificial Intelligence · Computer Science 2025-04-02 Yu Gu , Kai Zhang , Yuting Ning , Boyuan Zheng , Boyu Gou , Tianci Xue , Cheng Chang , Sanjari Srivastava , Yanan Xie , Peng Qi , Huan Sun , Yu Su

World models are a fundamental component in model-based reinforcement learning (MBRL). To perform temporally extended and consistent simulations of the future in partially observable environments, world models need to possess long-term…

Machine Learning · Computer Science 2023-11-10 Fei Deng , Junyeong Park , Sungjin Ahn

Zero-shot generalization (ZSG) to unseen dynamics is a major challenge for creating generally capable embodied agents. To address the broader challenge, we start with the simpler setting of contextual reinforcement learning (cRL), assuming…

Machine Learning · Computer Science 2024-08-06 Sai Prasanna , Karim Farid , Raghu Rajan , André Biedenkapp

Top-performing Model-Based Reinforcement Learning (MBRL) agents, such as Dreamer, learn the world model by reconstructing the image observations. Hence, they often fail to discard task-irrelevant details and struggle to handle visual…

Machine Learning · Computer Science 2021-10-28 Fei Deng , Ingook Jang , Sungjin Ahn

World models learn behaviors in a latent imagination space to enhance the sample-efficiency of deep reinforcement learning (RL) algorithms. While learning world models for high-dimensional observations (e.g., pixel inputs) has become…

Machine Learning · Computer Science 2022-03-01 Axel Brunnbauer , Luigi Berducci , Andreas Brandstätter , Mathias Lechner , Ramin Hasani , Daniela Rus , Radu Grosu

A World Model is a generative model used to simulate an environment. World Models have proven capable of learning spatial and temporal representations of Reinforcement Learning environments. In some cases, a World Model offers an agent the…

Machine Learning · Computer Science 2021-09-20 Zac Wellmer , James T. Kwok

Learned world models summarize an agent's experience to facilitate learning complex behaviors. While learning world models from high-dimensional sensory inputs is becoming feasible through deep learning, there are many potential ways for…

Machine Learning · Computer Science 2020-03-18 Danijar Hafner , Timothy Lillicrap , Jimmy Ba , Mohammad Norouzi

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

It has been a long-standing dream to design artificial agents that explore their environment efficiently via intrinsic motivation, similar to how children perform curious free play. Despite recent advances in intrinsically motivated…

Machine Learning · Computer Science 2022-11-29 Cansu Sancaktar , Sebastian Blaes , Georg Martius

World models are emerging as a transformative paradigm in artificial intelligence, enabling agents to construct internal representations of their environments for predictive reasoning, planning, and decision-making. By learning latent…

Artificial Intelligence · Computer Science 2025-06-03 Changyuan Zhao , Ruichen Zhang , Jiacheng Wang , Gaosheng Zhao , Dusit Niyato , Geng Sun , Shiwen Mao , Dong In Kim

"Dreaming" enables agents to learn from imagined experiences, enabling more robust and sample-efficient learning of world models. In this work, we consider innovations to the state-of-the-art Dreamer model using probabilistic methods that…

Machine Learning · Computer Science 2026-03-06 Gavin Wong

Large pre-trained language models (PLMs) have made significant progress in encoding world knowledge and spawned a new set of learning paradigms including zero-shot, few-shot, and in-context learning. Many language tasks can be modeled as a…

Computation and Language · Computer Science 2023-05-25 Debaditya Shome , Kuldeep Yadav

World models learn general knowledge from videos and simulate experience for training behaviors in imagination, offering a path towards intelligent agents. However, previous world models have been unable to accurately predict object…

Artificial Intelligence · Computer Science 2025-09-30 Danijar Hafner , Wilson Yan , Timothy Lillicrap

Learning robust and generalizable world models is crucial for enabling efficient and scalable robotic control in real-world environments. In this work, we introduce a novel framework for learning world models that accurately capture…

Robotics · Computer Science 2025-12-16 Chenhao Li , Andreas Krause , Marco Hutter
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