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AI & Machine Learning · Foundational

Semantic Search

Search that retrieves results by meaning, using embeddings, rather than by exact keyword match.

Definition

Queries and documents are embedded and compared by vector similarity, so results match intent even with different wording. It is often combined with keyword search in hybrid search for best results.

Example

A query for 'car won't start' retrieves a document titled 'troubleshooting a dead battery'.

Exam tip

Semantic search matches meaning but can miss exact codes or names, which is why hybrid search exists.

Related terms