HaHafeng
beb7f7f559
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
118 lines
2.3 KiB
Markdown
118 lines
2.3 KiB
Markdown
# 文档处理引擎
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> **能力定位：** 通用能力层
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> **复用率：** 86% (6个模块依赖)
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> **优先级：** P0
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> **状态：** ✅ 已实现（Python微服务）
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---
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## 📋 能力概述
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文档处理引擎是平台的核心基础能力，负责：
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- 多格式文档文本提取（PDF、Docx、Txt、Excel）
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- OCR处理
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- 表格提取
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- 语言检测
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- 质量评估
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---
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## 📊 依赖模块
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**6个模块依赖（86%复用率）：**
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1. **ASL** - AI智能文献（文献PDF提取）
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2. **PKB** - 个人知识库（知识库文档上传）
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3. **DC** - 数据清洗（Excel/Docx数据导入）
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4. **SSA** - 智能统计分析（数据导入）
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5. **ST** - 统计分析工具（数据导入）
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6. **RVW** - 稿件审查（稿件文档提取）
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---
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## 💡 核心功能
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### 1. PDF提取
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- **Nougat**：英文学术论文（高质量）
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- **PyMuPDF**：中文PDF + 兜底方案（快速）
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- **语言检测**：自动识别中英文
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- **质量评估**：提取质量评分
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### 2. Docx提取
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- **Mammoth**：转Markdown
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- **python-docx**：结构化读取
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### 3. Txt提取
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- **多编码支持**：UTF-8、GBK等
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- **chardet**：自动检测编码
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### 4. Excel处理
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- **openpyxl**：读取Excel
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- **pandas**：数据处理
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---
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## 🏗️ 技术架构
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**Python微服务（FastAPI）：**
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```
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extraction_service/
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├── main.py (509行) - FastAPI主服务
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├── services/
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│ ├── pdf_extractor.py (242行) - PDF提取总协调
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│ ├── pdf_processor.py (280行) - PyMuPDF实现
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│ ├── language_detector.py (120行) - 语言检测
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│ ├── nougat_extractor.py (242行) - Nougat实现
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│ ├── docx_extractor.py (253行) - Docx提取
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│ └── txt_extractor.py (316行) - Txt提取（多编码）
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└── requirements.txt
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```
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---
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## 📚 API端点
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```
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POST /api/extract/pdf - PDF文本提取
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POST /api/extract/docx - Docx文本提取
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POST /api/extract/txt - Txt文本提取
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POST /api/extract/excel - Excel表格提取
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GET /health - 健康检查
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```
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---
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## 🔗 相关文档
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- [通用能力层总览](../README.md)
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- [Python微服务代码](../../../extraction_service/)
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---
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**最后更新：** 2025-11-06
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**维护人：** 技术架构师
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