让神经网络模拟生物大脑的动态时序,实现更智能的连续推理。
Continuous Thought Machines
- 每个神经元独立处理历史输入,引入时间维度的个性化权重
- 通过神经同步形成潜在表示,支持复杂序列任务与自适应计算
- 适合关注可解释性与生物合理性的人工智能研究者
生物大脑展现出复杂的神经活动,其中神经动力学对信息处理至关重要。现有人工神经网络大多忽略单个神经元的复杂性。本文提出连续思维机器(CTM),重新将神经时序作为核心表征。其两大创新为:(1)神经元级的时间处理,每个神经元使用独特权重参数处理输入历史;(2)以神经同步作为潜在表示。CTM在保持计算可行性的同时,捕捉关键时序动态,平衡了抽象与生物真实性。实验显示其在2D迷宫求解、ImageNet-1K分类、奇偶校验计算等任务中表现优异。该模型具备丰富的内部表征,支持自然可解释性,并能根据任务难度自适应调整计算时长——简单任务提前终止,复杂任务持续演算。本文旨在推广此架构及其思想,而非追求新最优结果。我们提供在线交互演示(https://pub.sakana.ai/ctm/)及扩展技术报告(https://pub.sakana.ai/ctm/paper)。
原文摘要 · Abstract (English)
Biological brains demonstrate complex neural activity, where neural dynamics are critical to how brains process information. Most artificial neural networks ignore the complexity of individual neurons. We challenge that paradigm. By incorporating neuron-level processing and synchronization, we reintroduce neural timing as a foundational element. We present the Continuous Thought Machine (CTM), a model designed to leverage neural dynamics as its core representation. The CTM has two innovations: (1) neuron-level temporal processing, where each neuron uses unique weight parameters to process incoming histories; and (2) neural synchronization as a latent representation. The CTM aims to strike a balance between neuron abstractions and biological realism. It operates at a level of abstraction that effectively captures essential temporal dynamics while remaining computationally tractable. We demonstrate the CTM's performance and versatility across a range of tasks, including solving 2D mazes, ImageNet-1K classification, parity computation, and more. Beyond displaying rich internal representations and offering a natural avenue for interpretation owing to its internal process, the CTM is able to perform tasks that require complex sequential reasoning. The CTM can also leverage adaptive compute, where it can stop earlier for simpler tasks, or keep computing when faced with more challenging instances. The goal of this work is to share the CTM and its associated innovations, rather than pushing for new state-of-the-art results. To that end, we believe the CTM represents a significant step toward developing more biologically plausible and powerful artificial intelligence systems. We provide an accompanying interactive online demonstration at https://pub.sakana.ai/ctm/ and an extended technical report at https://pub.sakana.ai/ctm/paper .
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