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Free Lesson
Hybrid search live coded from scratch
60 min
May 30, 2025 10:00 AM
Virtual (Zoom)
In this video
What you'll learn
Internals of hybrid search
How a vector search index, like Elasticsearch's, implements filtering using algorithms to combine with lexical retrieval
See where hybrid search goes wrong
As you watch an expert live-code, see where the algorithm falls apart as a real-life expert makes a mistake
Deepen your vector search knowledge
Dense vectors provide specific constraints on retrieval solutions - learn what these are, how they can go wrong
Why this topic matters
RAG systems all use vector databases. HNSW (Hierarchical Navigable Small Worlds) is the most common algorithm. If you want to build RAG, you should appreciate how this algorithm works (Missed previous parts? catch up here https://maven.com/p/eca048/build-a-vector-database-from-scratch-part-two)
You'll learn from
Doug Turnbull
Led Search at Shopify, Reddit
Ben Trent
Sr. Principal Engineer Elastic
Previously at
