用数学可计算的解析概念,让机器人把常识理解变成物理操作
Physically Ground Commonsense Knowledge for Articulated Object Manipulation with Analytic Concepts
- 用数学符号定义解析概念,实现语义与物理的精准对接
- 在真实和仿真环境中均实现更精准的可变形物体操作
- 适合需要物理常识推理的机器人操控任务
人类在与物理世界中大量不同种类的物体交互时依赖广泛的常识知识。同样,机器人要发展通用的物体操作能力,也离不开这类常识。尽管多模态大语言模型(MLLM)在获取常识知识和进行常识推理方面展现强大能力,但如何将这些语义层面的知识有效落地到物理世界,以指导机器人完成通用的可变形物体操作,仍是未充分解决的挑战。为此,我们引入解析概念——基于数学符号形式化定义、可被机器直接计算与仿真的概念。通过解析概念作为桥梁,将MLLM推断出的语义知识与真实机器人所处的物理世界相连接,实现对物体结构与功能的物理感知表征,并利用这种具备物理基础的知识来指导机器人控制策略,从而实现更通用、更精确的可变形物体操作。大量真实世界与仿真环境下的实验验证了该方法的优越性。
原文摘要 · Abstract (English)
We humans rely on a wide range of commonsense knowledge to interact with an extensive number and categories of objects in the physical world. Likewise, such commonsense knowledge is also crucial for robots to successfully develop generalized object manipulation skills. While recent advancements in Multi-modal Large Language Models (MLLMs) have showcased their impressive capabilities in acquiring commonsense knowledge and conducting commonsense reasoning, effectively grounding this semantic-level knowledge produced by MLLMs to the physical world to thoroughly guide robots in generalized articulated object manipulation remains a challenge that has not been sufficiently addressed. To this end, we introduce analytic concepts, procedurally defined upon mathematical symbolism that can be directly computed and simulated by machines. By leveraging the analytic concepts as a bridge between the semantic-level knowledge inferred by MLLMs and the physical world where real robots operate, we can figure out the knowledge of object structure and functionality with physics-informed representations, and then use the physically grounded knowledge to instruct robot control policies for generalized and accurate articulated object manipulation. Extensive experiments in both real world and simulation demonstrate the superiority of our approach.
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