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---
title: "神经代数几何 (Neuroalgebraic Geometry)"
created: 2026-06-10
updated: 2026-06-10
type: concept
tags: ["algebraic-geometry", "neural-networks", "machine-learning-theory"]
sources: ["[[relu-neuromanifolds-semi-algebraicity]]"]
---
# 神经代数几何 (Neuroalgebraic Geometry)
**Neuroalgebraic Geometry** 是用代数几何工具研究神经网络[[neuromanifold|神经流形]]的交叉领域([MSM+25] 综述)。
## 研究纲领
将机器学习的对象和概念翻译为代数几何不变量:
| ML 概念 | 代数几何对应 |
|---------|------------|
| 网络架构 | 参数化映射 Phi: W -> M_d |
| 函数空间 | 神经流形 M_d |
| 训练 | M_d 上的优化问题 |
| 过参数化 | 纤维维度 > 0 |
| 对称性 | 群作用 |
| 可识别性 | 纤维结构 |
## 已知结果
- **多项式激活**:已较好理解——神经流形是代数簇或半代数空间
- **ReLU 激活**:几乎未知——是当前研究前沿
## 核心问题
1. **半代数性**:神经流形在什么意义下是半代数的?
2. **商结构**M_d 是权重空间 R^M / E_Phi 的商吗?(对 ReLU**不是**
3. **对称性分类**:参数化映射有哪些对称性?
4. **奇点几何**M_d 的奇点如何影响训练?
## 参考
- [[relu-neuromanifolds-semi-algebraicity|ReLU Neuromanifolds]]
- [[neuromanifold|Neuromanifold]]
- [[semi-algebraic-set|Semi-algebraic Set]]
- [[honest-open-subset|Honest Open Subset]]