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Semantic expansion

As explained in AI-Powered Search

Semantic expansion broadens matching or scoring with words or concepts related to the query terms and their context.

Semantic expansion broadens search relevance by boosting documents containing words or concepts closely related to the query keywords and their context. section 3.2.2

It acts as one scoring signal alongside geospatial, date, popularity, field, category, and phrase boosting, helping ranking extend beyond exact query terms. section 3.2.2

How AI-Powered Search covers it

How deep it goes
Defines semantic expansion and places it among scoring functions, but does not explain its algorithm, configuration, or evaluation.
What it assumes
Assumes familiarity with search queries, documents, relevance scores, and ranking signals.
What you can do after
Evaluate semantic expansion as a relevance signal alongside other ranking and boosting functions.
How it connects
Connects semantic expansion with relevance scoring, query keywords, context, ranking, and boosting.
Cover of AI-Powered Search
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This explainer was generated by Manning's knowledge graph from the text of AI-Powered Search. The section links point to the parts of the book it draws on.