1Beyond Naive RAG: Why It BreaksRetrieval-augmented generation looks simple: search, paste, answer. The hard part is making the retrieved evidence true, relevant, and safe.Advanced 2Hybrid Dense-Sparse & RerankersCombine keyword search, vector search, and reranking to retrieve the right context for reliable retrieval-augmented generation.Advanced 3GraphRAG: Entities & CommunitiesGraphRAG turns documents into entities and communities so retrieval can answer questions that depend on relationships, not just matching words.Advanced 4Query Planning & Multi-HopHow complex questions become a sequence of smaller searches, checks, and joins before an answer is safe to trust.Advanced 5Retrieval Evaluation & GroundingHow to test whether an AI system found the right evidence, used it faithfully, and knows when not to answer.Advanced