20260625:很多新内容
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concepts/candidate-graph.md
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concepts/candidate-graph.md
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title: "候选图 — Candidate Graph"
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created: 2026-06-19
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updated: 2026-06-19
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type: concept
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tags: [candidate-graph, tool-expansion, mutation, semantic-graph]
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sources:
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- https://arxiv.org/abs/2601.08276
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---
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# 候选图(Candidate Graph)
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## 定义
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Candidate Graph 是 ACE-Router 的第一阶段:基于候选间的语义相似度和功能依赖关系构建的图结构,用于**扩展和结构化候选空间**。
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## 构建流程
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### 1. 初始图构建
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- 对每个候选 c 编码其结构化规范 ϕ(c)(工具描述 + schema,或 Agent profile + 能力范围)
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- 计算余弦相似度,阈值 τ=0.82 以上建边
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- 产生初始无向图 G = (C, E_sim)
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### 2. 自进化变异
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五种变异算子(针对工具):
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| 算子 | 作用 |
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|------|------|
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| Function Enhancement | 增强现有功能 |
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| Parameter Mutation | 参数层面修改 |
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| Workflow Chaining | 链接多个操作为流水线 |
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| Helper Operation | 创建辅助工具 |
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| Usage Extension | 扩展使用场景 |
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每轮随机选候选 c + 算子 m → LLM 合成新候选 c' = m(c) → 添加到图 + 建变异边
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## 效果
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627 初始工具 → 2005 工具(+219%)→ 训练数据从 15,092 样本。候选空间的丰富度直接决定路由器的辨识能力。
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## 参考
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- [[ace-router|ACE-Router]]
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- [[self-evolutionary-mutation|自进化变异]]
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- [[trajectory-synthesis|轨迹合成]]
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- [[yao-ace-router-2026|论文]]
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