Generative AI

A Mechanistic View on Video Generation as World Models: State and Dynamics

LLuozhou WangZZhifei ChenYYihua DuDDongyu YanWWenhang GeGGuibao ShenXXinli XuLLeyi WuMMan ChenTTianshuo XuPPeiran RenXXin TaoPPengfei WanYYing-Cong Chen
Published
January 22, 2026
Authors
14
Word Count
13,794

Transforming video generation into robust world simulators.

Abstract

Large-scale video generation models have demonstrated emergent physical coherence, positioning them as potential world models. However, a gap remains between contemporary "stateless" video architectures and classic state-centric world model theories. This work bridges this gap by proposing a novel taxonomy centered on two pillars: State Construction and Dynamics Modeling. We categorize state construction into implicit paradigms (context management) and explicit paradigms (latent compression), while dynamics modeling is analyzed through knowledge integration and architectural reformulation. Furthermore, we advocate for a transition in evaluation from visual fidelity to functional benchmarks, testing physical persistence and causal reasoning. We conclude by identifying two critical frontiers: enhancing persistence via data-driven memory and compressed fidelity, and advancing causality through latent factor decoupling and reasoning-prior integration. By addressing these challenges, the field can evolve from generating visually plausible videos to building robust, general-purpose world simulators.

Key Takeaways

  • 1

    Proposes taxonomy for state construction and dynamics modeling.

  • 2

    Enhances long-term coherence and physical consistency in videos.

  • 3

    Utilizes causal architecture reformulation and knowledge integration.

Limitations

  • Implicit state mechanisms rely on heuristic rules.

  • Current models still struggle with physical dynamics.

Keywords

video generation modelsworld modelsstate constructiondynamics modelingimplicit paradigmsexplicit paradigmscontext managementlatent compressionknowledge integrationarchitectural reformulationphysical persistencecausal reasoningdata-driven memorycompressed fidelitylatent factor decouplingreasoning-prior integration

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