Combining Precision and Meaning
**Hybrid Search** combines traditional keyword search (BM25) with modern vector search. This ensures that your LangGraph agent can find documents that match exact terms (like a specific ID) while also understanding the broader semantic context of a user's request.
Implementing Rank Fusion
The results from both search methods are combined using "Reciprocal Rank Fusion" (RRF) to provide a single, highly accurate list of sources. This is the most robust retrieval strategy available today, providing the level of precision and depth required for professional-grade AI systems.
Conclusion
Accuracy drives trust. By mastering hybrid search implementation in LangGraph, you ensure that your agents always find the most relevant and accurate information, delivering a level of quality that exceeds the capabilities of standard search techniques.