**Backprop Alternative: Augmented Lagrangian Predictive Coding**

> We introduce PC-ALM, a local alternative to backpropagation. PC-ALM trains residual MLPs up to 1000 layers, nearly matching backprop's performance despite using only layer-local dynamics. PC-ALM equips each layer with a feedback control dynamical system that distributes and propagates supervision credit throughout a network. from front-matter; absorb that in a hidden throwaway so our real byline survives --\> Augmente...

**来源信息**
- **来源**：Hacker News：AI 热帖
- **分类**：论文
- **发布时间**：2026-09-15 02:03（北京时间）
- **原文**：[打开原文](https://pub.sakana.ai/pc-alm)