Discrete-WAM: Unified Discrete Vision-Action Token Editing for World-Policy Learning

Ziyang Yao, Haochen Liu, Yuncheng Jiang, Zeyu Zhu, Zibin Guo, Jingru Wang, Tianle Liu, Jianwei Cui, Kuiyuan Yang, Hongwei Xie, Jingwei Zhao, Guang Chen, Hangjun Ye

Discrete-WAM: Unified Discrete Vision-Action Token Editing for World-Policy Learning: 2 upvotes on Hugging Face Daily Papers, #40 of 50 papers on 2026-06-05. Day-by-day upvote history.

Autonomous driving requires reasoning about how ego actions shape the evolution of the surrounding world. However, most end-to-end methods rely on direct state-to-action mappings, capturing correlations without explicitly modeling action-conditioned dynamics. Conversely, continuous-latent world models often lack compositional structure for causal reasoning across counterfactual futures. We introduce Discrete-WAM, a unified latent vision-action world policy that represents future visual states and ego actions as aligned discrete tokens, enabling compositional causal reasoning across alternative futures. Built upon this unified discrete alignment, Discrete-WAM establishes a shared discrete diffusion framework with unified generative tasks, jointly formulating world modeling, world-action policy, and hierarchical decision-enabled policy, supporting compositional generalization across diverse driving scenarios. Experiments on large-scale autonomous-driving benchmarks show that Discrete-WAM achieves competitive performance while supporting controllable generation and counterfactual reasoning, offering a principled path toward more reliable decision-making.

Paper page on Hugging Face · arXiv

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