arXiv:2603.09600q-bio.NCcs.AI2026-03被引 1

提出一种类脑神经回路学习的新框架,让神经网络像大脑一样高效处理时间序列数据。

A Variational Latent Equilibrium for Learning in Neuronal Circuits

  • 基于能量守恒原理,构建时间连续的误差传播机制替代反向传播。
  • 可实现局部、无相位依赖的时空信用分配,支持真实生物神经网络计算。
  • 为类脑硬件计算提供理论蓝图,适合研究神经科学与类脑计算的人参考。

大脑在识别和生成复杂时空模式方面仍远超当前人工智能。尽管深度学习能再现部分能力,但其算法(如时间反向传播,BPTT)与现有神经回路理解存在显著矛盾。本文提出一种通用形式化方法,在可控且生物合理的基础上逼近BPTT。该方法基于神经元状态的前瞻性能量函数,推导出连续时间神经网络的实时误差动力学。一般情况下,可直接导出神经网络的伴随方法结果,即BPTT的时间连续等价形式。通过若干修改,可进一步转化为完全局部(空间与时间上)的神经元与突触动态方程。本理论为大脑中的时空深度学习提供了严格框架,同时暗示了可执行此类计算的物理电路蓝图。这些成果重构并扩展了近期提出的广义潜变量平衡(GLE)模型。

原文摘要 · Abstract (English)

Brains remain unrivaled in their ability to recognize and generate complex spatiotemporal patterns. While AI is able to reproduce some of these capabilities, deep learning algorithms remain largely at odds with our current understanding of brain circuitry and dynamics. This is prominently the case for backpropagation through time (BPTT), the go-to algorithm for learning complex temporal dependencies. In this work we propose a general formalism to approximate BPTT in a controlled, biologically plausible manner. Our approach builds on, unifies and extends several previous approaches to local, time-continuous, phase-free spatiotemporal credit assignment based on principles of energy conservation and extremal action. Our starting point is a prospective energy function of neuronal states, from which we calculate real-time error dynamics for time-continuous neuronal networks. In the general case, this provides a simple and straightforward derivation of the adjoint method result for neuronal networks, the time-continuous equivalent to BPTT. With a few modifications, we can turn this into a fully local (in space and time) set of equations for neuron and synapse dynamics. Our theory provides a rigorous framework for spatiotemporal deep learning in the brain, while simultaneously suggesting a blueprint for physical circuits capable of carrying out these computations. These results reframe and extend the recently proposed Generalized Latent Equilibrium (GLE) model.

类脑计算神经网络能量模型时空学习

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