CourseRetrieval-Augmented Generation: The Complete Course · Module 6: Search: Dense, Sparse, and Hybrid · part 42 of 95

Part 42 · Module 6: Search: Dense, Sparse, and Hybrid

Module 6: Search: Dense, Sparse, and Hybrid

1 min read·13 Oct 2026

What you need first

Module 5 (the retriever interface, Allow filters that fail closed, the synced green index)
Module 4 (bge-small, recall@k, MRR and the paired bootstrap)
Python classes and NumPy arrays
No model keys: everything runs locally. On a Mac, read "FAISS and PyTorch together" in course-guide/02

This course is bought on its own, once, and stays readable afterwards, including the parts added to it later.