arXiv:2411.17438cs.AIcs.CV2024-11中稿 · publication in Neu…被引 2

从像素中学习物体表征,实现无需标注的自主推理与控制。

Object-centric proto-symbolic behavioural reasoning from pixels

  • 基于物体中心表征,从像素直接学习环境理解与行为决策。
  • 在合成环境中实现条件推理、逻辑组合与异或运算等高级思维能力。
  • 适合对无监督智能体、认知建模感兴趣的科研人员参考。

自主智能体需在感知输入和动作命令的低层次空间与抽象推理和规划的高层次空间之间建立桥梁。设计此类智能体的关键在于如何构建二者间的表征空间,理想情况下无需依赖昂贵的数据标注。通过以物体为基础(根植于感知与行动)来表示世界,可高效实现该目标。本文提出一种受大脑启发的深度学习架构,直接从像素学习环境的解释、控制与推理,采用物体中心表征。在包含逻辑推理与连续控制的合成任务中,结果表明该智能体能自发学习条件行为推理(如 (A → B) ∧ (¬A → C))、逻辑复合((A → B) ∧ (A → C) ⊢ A → (B ∧ C))及异或操作,并成功依据逻辑规则控制环境以达成目标。该智能体能在线适应环境突变,且对世界模型的轻微偏差具有鲁棒性,得益于动态内部目标生成机制。尽管当前结果局限于合成场景(2D与3D激活版dSprites),但该架构展示了如何利用具身物体表征这一关键归纳偏置,实现无监督行为推理。

原文摘要 · Abstract (English)

Autonomous intelligent agents must bridge computational challenges at disparate levels of abstraction, from the low-level spaces of sensory input and motor commands to the high-level domain of abstract reasoning and planning. A key question in designing such agents is how best to instantiate the representational space that will interface between these two levels -- ideally without requiring supervision in the form of expensive data annotations. These objectives can be efficiently achieved by representing the world in terms of objects (grounded in perception and action). In this work, we present a novel, brain-inspired, deep-learning architecture that learns from pixels to interpret, control, and reason about its environment, using object-centric representations. We show the utility of our approach through tasks in synthetic environments that require a combination of (high-level) logical reasoning and (low-level) continuous control. Results show that the agent can learn emergent conditional behavioural reasoning, such as $(A \to B) \land (\neg A \to C)$, as well as logical composition $(A \to B) \land (A \to C) \vdash A \to (B \land C)$ and XOR operations, and successfully controls its environment to satisfy objectives deduced from these logical rules. The agent can adapt online to unexpected changes in its environment and is robust to mild violations of its world model, thanks to dynamic internal desired goal generation. While the present results are limited to synthetic settings (2D and 3D activated versions of dSprites), which fall short of real-world levels of complexity, the proposed architecture shows how to manipulate grounded object representations, as a key inductive bias for unsupervised learning, to enable behavioral reasoning.

物体表征行为推理无监督学习智能体

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