arXiv:2510.27379cs.NEcs.AI2025-10被引 7

脉冲神经网络更省电、响应更快,适合边缘智能与机器人应用。

Spiking Neural Networks: The Future of Brain-Inspired Computing

  • 用脉冲事件替代连续信号,实现低功耗动态计算。
  • 脉冲梯度训练的SNN精度接近ANN(差1-2%),20轮内收敛,延迟仅10毫秒。
  • 基于STDP的SNN能耗最低(每推理5毫焦),适合无监督和低功耗场景。

脉冲神经网络(SNNs)是脑启发计算的新一代神经网络,以离散脉冲事件为运算基础,相比传统人工神经网络(ANNs)更具能效优势和时间动态性。本文系统分析了SNN的模型设计、训练算法及多维性能指标,包括准确率、能耗、延迟、脉冲数与收敛行为。研究对比了泄漏积分-放电(LIF)等核心神经元模型,以及代理梯度下降、ANN转SNN、脉冲时序依赖可塑性(STDP)等训练策略。结果表明,代理梯度训练的SNN精度接近ANN(误差1-2%),20个训练周期内快速收敛,推理延迟低至10毫秒;转换后的SNN表现良好但需更高脉冲数和更长仿真窗口;而基于STDP的SNN虽收敛较慢,却拥有最低脉冲数与能耗(单次推理低至5毫焦),适用于无监督学习与低功耗任务。这些成果验证了SNN在资源受限、低延迟与自适应场景(如机器人、类脑视觉、边缘AI)中的潜力。尽管仍面临硬件标准化与可扩展训练挑战,进一步优化后,SNN有望推动下一代类脑计算发展。

原文摘要 · Abstract (English)

Spiking Neural Networks (SNNs) represent the latest generation of neural computation, offering a brain-inspired alternative to conventional Artificial Neural Networks (ANNs). Unlike ANNs, which depend on continuous-valued signals, SNNs operate using distinct spike events, making them inherently more energy-efficient and temporally dynamic. This study presents a comprehensive analysis of SNN design models, training algorithms, and multi-dimensional performance metrics, including accuracy, energy consumption, latency, spike count, and convergence behavior. Key neuron models such as the Leaky Integrate-and-Fire (LIF) and training strategies, including surrogate gradient descent, ANN-to-SNN conversion, and Spike-Timing Dependent Plasticity (STDP), are examined in depth. Results show that surrogate gradient-trained SNNs closely approximate ANN accuracy (within 1-2%), with faster convergence by the 20th epoch and latency as low as 10 milliseconds. Converted SNNs also achieve competitive performance but require higher spike counts and longer simulation windows. STDP-based SNNs, though slower to converge, exhibit the lowest spike counts and energy consumption (as low as 5 millijoules per inference), making them optimal for unsupervised and low-power tasks. These findings reinforce the suitability of SNNs for energy-constrained, latency-sensitive, and adaptive applications such as robotics, neuromorphic vision, and edge AI systems. While promising, challenges persist in hardware standardization and scalable training. This study concludes that SNNs, with further refinement, are poised to propel the next phase of neuromorphic computing.

脉冲神经网络类脑计算低功耗AI边缘智能

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