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Semantic search

Semantic search finds documents based on meaning rather than exact wording, by comparing the underlying concepts of a query and each document.

Prerequisite: Keyword search

What matters

Because it compares meaning rather than literal words, semantic search can surface relevant results even when the query and document use completely different vocabulary.

Example

A semantic search for 'car' can also return a document about 'automobiles', since both are represented as similar in meaning even though the words differ.

Common misconception

Semantic search does not always outperform keyword search; for exact codes, names, or IDs, literal keyword matching is often more reliable.

Recall question

What allows semantic search to match a query to a document that uses entirely different words?

Keywords and related concepts

semantic searchmeaning-based searchembeddingskeyword search

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