Evaluation

Published on
March 25, 2026
Production RAG: Chunking Strategies, Hybrid Search, Reranking and Evaluation
Python LangChain RAG LLM Evaluation
What separates a toy RAG from a production-grade one. Three pillars covered: chunking strategies (character vs token-based vs HTMLHeaderTextSplitter), advanced retrieval with hybrid search (BM25 + dense) and Reciprocal Rank Fusion, cross-encoder reranking with Flashrank, and automated evaluation using LLM-as-judge with 4 RAGAS-equivalent metrics.

Production RAG: Chunking Strategies, Hybrid Search, Reranking and Evaluation