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# 📋 Document Finder Backend API
A comprehensive REST API for searching and retrieving technical documents and specifications from **3GPP**, **ETSI** and **GlobalPlatform** organizations.
### 🚀 Key Features
* **Document Retrieval**: Get direct download URLs and metadata for specific documents
* **Batch Processing**: Handle multiple document requests simultaneously
* **Advanced Search**: Multiple search modes with keyword matching
* **BM25 Scoring**: State-of-the-art relevance ranking using BM25 algorithm
* **Cross-Organization**: Search across both 3GPP and ETSI document repositories
### 📚 Supported Document Types
#### 3GPP Documents
* **TDocs (Technical Documents)**:
- Format: `S1-123456`, `C4-234567`, `R2-345678`
- Working group documents from SA, CT, RAN groups
* **Technical Specifications**:
- Format: `23.401`, `38.331-16`
- Official published specifications
#### ETSI Documents
* **TDocs (Technical Documents)**:
- Format: `SET(25)000001`, `SCPTEQ(19)000011`
- Committee working documents
* **Technical Specifications**:
- Format: `131 102`, `188 008-2`
- Published ETSI standards
#### GP Documents
* **Specifications**
- Format: `GPC_SPE_106`, `GP_REQ_004`
- Published Global Platform specifications
### 🔍 Search Capabilities
* **Quick Search**: Lightning-fast metadata-only search
* **Deep Search**: Comprehensive content-based search within document sections
* **BM25 Search**: Advanced relevance scoring with normalization
* **Flexible Filtering**: By source organization, document type, and specification category
### 🛡️ Data Sources
This API indexes and searches through:
- 3GPP specification metadata and content (from the Datasets section)
- ETSI specification metadata and content (from the Datasets section)
- 3GPP TDoc location mappings (from the Datasets section)
- GP TDoc location mappings (from Python app.py)
- Pre-built BM25 search indices (from the Models section)
### 🔧 Technical Stack
Built with FastAPI, featuring automatic OpenAPI documentation, request validation, and comprehensive error handling. |