Files
AIclinicalresearch/docs/02-通用能力层/03-RAG引擎/README.md
HaHafeng 31d555f7bb docs: Update architecture docs with platform infrastructure details
- Add platform infrastructure chapter to frontend-backend architecture design
- Update system architecture document with 6 new infrastructure modules
- Update AI onboarding guide with infrastructure overview
- Link to backend/src/common/README.md for detailed usage guide

Key Updates:
- Storage service (LocalAdapter + OSSAdapter)
- Logging system (Winston + JSON format)
- Cache service (Memory + Redis)
- Async job queue (Memory + Database)
- Health check endpoints
- Monitoring metrics
- Database connection pool
- Environment config management

All modules support zero-code switching between local and cloud environments.

Related: #Platform-Infrastructure
2025-11-17 08:36:10 +08:00

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RAG引擎

能力定位: 通用能力层
复用率: 43% (3个模块依赖)
优先级: P1
状态: 已实现基于Dify


📋 能力概述

RAG引擎负责

  • 向量化存储Embedding
  • 语义检索Semantic Search
  • 检索增强生成RAG
  • Rerank重排序

📊 依赖模块

3个模块依赖43%复用率):

  1. AIA - AI智能问答@知识库问答)
  2. ASL - AI智能文献文献内容检索
  3. PKB - 个人知识库RAG问答

💡 核心功能

1. 向量化存储

  • 基于Dify平台
  • Qdrant向量数据库Dify内置

2. 语义检索

  • Top-K检索
  • 相关度评分
  • 多知识库联合检索

3. RAG问答

  • 检索 + 生成
  • 智能引用系统100%准确溯源)

🏗️ 技术架构

基于Dify平台

// DifyClient封装
interface RAGEngine {
  // 创建知识库
  createDataset(name: string): Promise<string>;
  
  // 上传文档
  uploadDocument(datasetId: string, file: File): Promise<string>;
  
  // 语义检索
  search(datasetId: string, query: string, topK?: number): Promise<SearchResult[]>;
  
  // RAG问答
  chatWithRAG(datasetId: string, query: string): Promise<string>;
}

📈 优化成果

检索参数优化:

指标 优化前 优化后 提升
检索数量 3 chunks 15 chunks 5倍
Chunk大小 500 tokens 1500 tokens 3倍
总覆盖 1,500 tokens 22,500 tokens 15倍
覆盖率 ~5% ~40-50% 8-10倍

🔗 相关文档


最后更新: 2025-11-06
维护人: 技术架构师