LESSON 3.1
Hybrid keyword and vector search
Learn key techniques and workflows in Retrieval-Augmented Generation from Scratch.
6m
advanced
6,300 students
Overview
Vector search misses exact identifiers; keyword search misses paraphrase. Running both and fusing the rankings covers each one’s blind spot.
In this lesson you will:
- Combine lexical and semantic result sets
- Fuse rankings rather than concatenating them
- Fall back to keyword search when embeddings are unavailable
Pro Tip
If embeddings are switched off in your environment, wildcarded keyword matching is the fallback that still works.