Optimizing RAG Performance Through Advanced Query Decomposition and Multi-Stage Document Re-Ranking Strategies
Introduction Retrieval‑Augmented Generation (RAG) has become the de‑facto architecture for many knowledge‑intensive natural language processing (NLP) applications—ranging from open‑domain question answering to enterprise‑level chatbot assistants. At its core, a RAG system couples a retriever (often a dense vector search engine) with a generator (typically a large language model, LLM) so that the model can ground its output in external documents instead of relying solely on parametric knowledge. While the basic pipeline—query → retrieve → generate—is conceptually simple, production‑grade deployments quickly reveal performance bottlenecks: ...