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新研究重新审视反向传播的机制和局限性 · 跟踪 4 个来源

三篇最新的 arXiv 论文探讨了深度学习中反向传播的机制和局限性。其中一篇论文将反向传播重新表述为一个幂零线性系统,揭示了其数学结构以及对残差网络和迁移学习的影响。另一项研究将反向传播与前向模式自动微分和零阶优化等替代方法进行了比较,发现虽然这些替代方法节省了内存,但计算成本更高,准确性也随之降低。第三篇论文将语言模型头识别为一个重要的梯度瓶颈,表明从内部特征到词汇 logits 的投影抑制了很大一部分梯度范数,导致次优的训练动态和效率低下。 AI

影响 这些研究提供了更深入的理论理解,并强调了训练大型模型的实际权衡,可能为未来的优化技术提供指导。

排序理由 多篇 arXiv 论文提出了关于反向传播及其替代方法的新颖理论框架和实证研究。

在 arXiv cs.CL 阅读 →

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新研究重新审视反向传播的机制和局限性 · 跟踪 4 个来源

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多篇 arXiv 论文提出了关于反向传播及其替代方法的新颖理论框架和实证研究。
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报道来源 [6]

  1. arXiv cs.AI TIER_1 English(EN) · Daniel Vila-Cruz, Laura Mor\'an-Fern\'andez, Ver\'onica Bol\'on-Canedo ·

    超越骨干反向传播:一种高效迁移学习的解耦策略

    arXiv:2607.13043v1 Announce Type: cross Abstract: Deep learning models achieve state-of-the-art image classification but face deployment challenges due to computational costs and energy demands. We propose a lightweight training strategy that adapts normalization layers of the mo…

  2. arXiv cs.LG TIER_1 English(EN) · Ahmed Boughammoura ·

    Backpropagation as a Nilpotent Linear System

    arXiv:2607.11289v1 Announce Type: cross Abstract: Backpropagation is the computational engine of deep learning, yet its mathematical structure is typically treated as a procedural traversal of computational graphs. We present a global operator theory of the \emph{F-adjoint} frame…

  3. arXiv cs.LG TIER_1 English(EN) · Kunjal Panchal, Sunav Choudhary, Yuriy Brun, Hui Guan ·

    内存节省的代价是什么?一项关于反向传播替代方案的研究

    arXiv:2506.21833v2 Announce Type: replace Abstract: Forward-mode automatic differentiation (FmAD) and zero-order (ZO) optimization are increasingly proposed as memory-efficient, backpropagation-free alternatives for large language model (LLM) fine-tuning, yet their benefits are t…

  4. arXiv cs.LG TIER_1 English(EN) · Ahmed Boughammoura ·

    Backpropagation 作为一种幂零线性系统

    Backpropagation is the computational engine of deep learning, yet its mathematical structure is typically treated as a procedural traversal of computational graphs. We present a global operator theory of the \emph{F-adjoint} framework, which reformulates the layerwise backward re…

  5. Hugging Face Daily Papers TIER_1 English(EN) ·

    Backpropagation as a Nilpotent Linear System

    Backpropagation is the computational engine of deep learning, yet its mathematical structure is typically treated as a procedural traversal of computational graphs. We present a global operator theory of the \emph{F-adjoint} framework, which reformulates the layerwise backward re…

  6. arXiv cs.CL TIER_1 English(EN) · Nathan Godey, Yoav Artzi ·

    反向传播中的迷失:LM头是梯度瓶颈

    arXiv:2603.10145v2 Announce Type: replace Abstract: The last layer of neural language models (LMs) projects output features of dimension $D$ to logits in dimension $V$, the size of the vocabulary, where usually $D \ll V$. This mismatch is known to raise risks of limited expressiv…