AI engineering glossary · RAG vector search
What is full-text search?
Full-text search: Searching the entire text of documents for words or phrases, usually with an inverted index, stemming and ranking. It is the classic keyword engine that hybrid RAG systems combine with vector search.
Full-text search: an example
Searching 'refund policy' in a database's full-text engine returns pages ranked by term frequency.
Related terms
More RAG vector search terms
Where you learn it
Full-text search is part of the AI Engineering Program, which teaches it with notes, a hands-on lab and an exam. The first lesson is free.