Towards Predictive, Aligned, and Scalable Robot Learning

📄 arXiv: 2607.11270v1 📥 PDF

作者: Peijun Tang, Shangjin Xie, Baifu Huang, Binyan Sun, Haotian Yang, Kuncheng Luo, Weiqi Jin, Shilin Fang, Jianan Wang

分类: cs.RO, cs.AI

发布日期: 2026-07-13


💡 一句话要点

提出Lumo-2以解决机器人学习中的预测与对齐问题

🎯 匹配领域: 支柱一:机器人控制 (Robot Control) 支柱二:RL算法与架构 (RL & Architecture) 支柱九:具身大模型 (Embodied Foundation Models)

关键词: 机器人学习 潜在空间 多模态对齐 预测推理 动作生成 物理理解 复杂任务

📋 核心要点

  1. 现有方法在动作生成中存在重建质量与控制性能之间的失配,导致低级信号保真度偏向。
  2. 提出Lumo-2模型,通过潜在空间中的世界动态推理生成动作,并引入多阶段模态预对齐策略。
  3. 实验结果显示,Lumo-2在复杂的真实任务中表现优于现有基线,特别是在长时间和灵巧操作任务中。

📝 摘要(中文)

学习的核心在于超越记忆,具备推理和解决新问题的能力。本文介绍了Lumo-2,一个潜在的世界-动作模型,通过在潜在空间中推理世界动态生成动作。所学习的潜在世界动态捕捉物理基础的视觉转变,自然编码未来可能性,并为跨模态对齐提供统一基础。该方法提出了一种多阶段模态预对齐策略,逐步将动作表示与潜在世界动态、视觉和语言对齐,促进跨模态一致性和抽象,形成结构化的潜在空间以进行预测推理。实验证明,Lumo-2在需要时间推理、物理理解或高控制复杂度的真实任务中表现优异,超越了强大的视觉-语言-动作和世界-动作模型基线。

🔬 方法详解

问题定义:本文旨在解决现有机器人学习方法中动作生成质量与控制性能之间的失配问题,特别是重建基础的动作标记目标导致的低级信号偏向。

核心思路:Lumo-2通过在潜在空间中推理世界动态生成动作,假设动作生成质量受潜在空间几何形状的影响,从而实现更高效的预测推理。

技术框架:Lumo-2的整体架构包括潜在世界动态建模、动作生成、模态对齐和多阶段预对齐策略,确保不同模态之间的一致性。

关键创新:该研究的核心创新在于引入多阶段模态预对齐策略,逐步将动作表示与潜在世界动态、视觉和语言对齐,形成结构化的潜在空间。

关键设计:在模型设计中,采用了特定的损失函数来优化模态对齐,并通过实验验证了不同阶段对齐的有效性,确保了模型在复杂任务中的高效性。

🖼️ 关键图片

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📊 实验亮点

实验结果表明,Lumo-2在多个复杂真实任务中均优于强大的视觉-语言-动作和世界-动作模型基线,尤其在长时间和灵巧操作任务中,性能提升显著,具体提升幅度未知。

🎯 应用场景

该研究的潜在应用场景包括机器人控制、自动化操作和智能助手等领域。通过提升机器人在复杂环境中的推理和适应能力,Lumo-2有望推动智能体在实际应用中的表现,尤其是在需要高水平物理理解和时间推理的任务中。

📄 摘要(原文)

Learning, at its core, extends beyond memorization to the ability to reason and solve novel problems by navigating a space of possibilities. We introduce Lumo-2, a latent world-action model that generates actions by reasoning over world dynamics in latent space. The learned latent world dynamics capture physically grounded visual transitions, naturally encoding future possibilities and providing a unified substrate for cross-modal alignment. This formulation enables predictive reasoning akin to world modelling while remaining lightweight and focused on physical dynamics relevant to control. Central to our approach is the hypothesis that action generation quality is governed by the geometry of the latent space. We observe that standard reconstruction-based action tokenization objectives induce representations biased toward low-level signal fidelity, leading to misalignment between reconstruction quality and downstream control performance. To address this limitation, we propose a multi-stage modality pre-alignment strategy in which action representations are progressively aligned with latent world dynamics, vision, and language. This process enforces cross-modal consistency, promotes abstraction, and induces a structured latent space for predictive reasoning. We provide a systematic empirical study of latent world modelling and modality alignment, analyzing their roles in scaling laws and out-of-distribution generalization. Results show that Lumo-2 consistently outperforms strong vision-language-action (VLA) and world-action model (WAM) baselines, with gains on challenging real-world tasks requiring temporal reasoning, physical understanding, or high control complexity, including long-horizon and dexterous manipulation. These findings suggest that structured multimodal alignment and predictive reasoning are fundamental principles for advancing embodied intelligence.