Free Lesson
Discovering the Power of Lexical Search in RAG Applications
45 min
May 26, 2025 4:30 PM
Virtual (Zoom)
In this video
What you'll learn
Semantic vs Lexical
You'll see the places where semantic search is weak. These are the exact places where lexical is strong.
Lexical Search Basics
We'll explain lexical search so that you can understand how it works and why it is ideal for certain domains.
Intro to Elasticsearch
Attendees will get a super fast tour of how to build an end-to-end Elasticsearch-based RAG application.
Why this topic matters
Semantic search has become the defacto standard for retrieval augmented generation (RAG). But in certain situations semantic search is just a bad fit. Lexical search – an older technology – offers a tried-and-true alternative that can be easier to set up, easier to understand and improve. This talk will open your eyes to new possibilities with lexical search.
You'll learn from
John Berryman
AI Consultant @ Arcturus Labs
Employeers, Publishers
