Core Components: - PDFStorageService with Dify/OSS adapters - LLM12FieldsService with Nougat-first + dual-model + 3-layer JSON parsing - PromptBuilder for dynamic prompt assembly - MedicalLogicValidator with 5 rules + fault tolerance - EvidenceChainValidator for citation integrity - ConflictDetectionService for dual-model comparison Prompt Engineering: - System Prompt (6601 chars, Section-Aware strategy) - User Prompt template (PICOS context injection) - JSON Schema (12 fields constraints) - Cochrane standards (not loaded in MVP) Key Innovations: - 3-layer JSON parsing (JSON.parse + json-repair + code block extraction) - Promise.allSettled for dual-model fault tolerance - safeGetFieldValue for robust field extraction - Mixed CN/EN token calculation Integration Tests: - integration-test.ts (full test) - quick-test.ts (quick test) - cached-result-test.ts (fault tolerance test) Documentation Updates: - Development record (Day 2-3 summary) - Quality assurance strategy (full-text screening) - Development plan (progress update) - Module status (v1.1 update) - Technical debt (10 new items) Test Results: - JSON parsing success rate: 100% - Medical logic validation: 5/5 passed - Dual-model parallel processing: OK - Cost per PDF: CNY 0.10 Files: 238 changed, 14383 insertions(+), 32 deletions(-) Docs: docs/03-涓氬姟妯″潡/ASL-AI鏅鸿兘鏂囩尞/05-寮€鍙戣褰?2025-11-22_Day2-Day3_LLM鏈嶅姟涓庨獙璇佺郴缁熷紑鍙?md
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文档处理引擎
能力定位: 通用能力层
复用率: 86% (6个模块依赖)
优先级: P0
状态: ✅ 已实现(Python微服务)
📋 能力概述
文档处理引擎是平台的核心基础能力,负责:
- 多格式文档文本提取(PDF、Docx、Txt、Excel)
- OCR处理
- 表格提取
- 语言检测
- 质量评估
📊 依赖模块
6个模块依赖(86%复用率):
- ASL - AI智能文献(文献PDF提取)
- PKB - 个人知识库(知识库文档上传)
- DC - 数据清洗(Excel/Docx数据导入)
- SSA - 智能统计分析(数据导入)
- ST - 统计分析工具(数据导入)
- RVW - 稿件审查(稿件文档提取)
💡 核心功能
1. PDF提取
- Nougat:英文学术论文(高质量)
- PyMuPDF:中文PDF + 兜底方案(快速)
- 语言检测:自动识别中英文
- 质量评估:提取质量评分
2. Docx提取
- Mammoth:转Markdown
- python-docx:结构化读取
3. Txt提取
- 多编码支持:UTF-8、GBK等
- chardet:自动检测编码
4. Excel处理
- openpyxl:读取Excel
- pandas:数据处理
🏗️ 技术架构
Python微服务(FastAPI):
extraction_service/
├── main.py (509行) - FastAPI主服务
├── services/
│ ├── pdf_extractor.py (242行) - PDF提取总协调
│ ├── pdf_processor.py (280行) - PyMuPDF实现
│ ├── language_detector.py (120行) - 语言检测
│ ├── nougat_extractor.py (242行) - Nougat实现
│ ├── docx_extractor.py (253行) - Docx提取
│ └── txt_extractor.py (316行) - Txt提取(多编码)
└── requirements.txt
📚 API端点
POST /api/extract/pdf - PDF文本提取
POST /api/extract/docx - Docx文本提取
POST /api/extract/txt - Txt文本提取
POST /api/extract/excel - Excel表格提取
GET /health - 健康检查
🔗 相关文档
最后更新: 2025-11-06
维护人: 技术架构师