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---
title: "Symbolic Network (符号网络)"
created: 2026-05-29
updated: 2026-05-29
type: concept
tags: ["agent", "symbolic-learning", "analogy"]
sources: ["https://arxiv.org/abs/2406.18532"]
---
# Symbolic Network (符号网络)
**Symbolic Network** 是 [[agent-symbolic-learning|Agent Symbolic Learning]] 的核心抽象:将 Agent Pipeline 建模为可训练的"符号网络"——节点是处理步骤prompts 和 tools 是"权重"。
## 精确映射
| 神经网络 | Symbolic Network |
|:---|:---|
| 计算图 | Agent Pipeline |
| 层 (Layer) | 节点 (Node) |
| 可学习权重 | Prompts + Tools自然语言字符串 + 函数定义) |
| 前向传播 | Agent 执行 |
| 反向传播 | [[symbolic-backpropagation\|Symbolic BP]] |
| 权重更新 | [[language-gradient\|Language Gradient]] → LLM 生成新内容 |
## 为什么是"符号"
- 优化对象是自然语言和代码,而非浮点数
- "权重"可读、可编辑、可审计
- 更新操作是 LLM 生成新文本,而非 `θ ← θ - η∇L`
## 与后续工作的关系
Symbolic Network 是更早期的底层抽象。[[skill-as-external-state|Skill as External State]]SkillOpt和 [[heuristic-learning|Heuristic Learning]] 均可视为其具体实例。
## 相关
- [[agent-symbolic-learning]] — 完整框架
- [[language-gradient]] — 符号网络的"梯度"