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Fundamentals · Medium · Free

What is RAG and why pair LLMs with your own documents?

FresherFundamentalsAI & Machine Learning Basics
Model answer

RAG pipeline

diagram
question → embed → vector DB top-k → prompt with chunks → LLM answer
  • Grounds answers in your docs
  • Retrieval quality matters as much as model
  • Log citations for trust
Contrast with fine-tuning: RAG updates knowledge without retraining weights.