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37 lines
1.3 KiB
Text
37 lines
1.3 KiB
Text
[[vector-queries]]
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== Vector queries
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Vector queries are specialized queries that work on vector fields to efficiently perform <<semantic-search,semantic search>>.
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<<query-dsl-knn-query,`knn` query>>::
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A query that finds the _k_ nearest vectors to a query vector for <<dense-vector,`dense_vector`>> fields, as measured by a similarity metric.
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<<query-dsl-sparse-vector-query,`sparse_vector` query>>::
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A query used to search <<sparse-vector,`sparse_vector`>> field types.
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<<query-dsl-semantic-query,`semantic` query>>::
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A query that allows you to perform semantic search on <<semantic-text,`semantic_text`>> fields.
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[discrete]
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=== Deprecated vector queries
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The following queries have been deprecated and will be removed in the near future.
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Use the <<query-dsl-sparse-vector-query,`sparse_vector` query>> query instead.
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<<query-dsl-text-expansion-query,`text_expansion` query>>::
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A query that allows you to perform sparse vector search on <<sparse-vector,`sparse_vector`>> or <<rank-features,`rank_features`>> fields.
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<<query-dsl-weighted-tokens-query,`weighted_tokens` query>>::
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Allows to perform text expansion queries optimizing for performance.
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include::knn-query.asciidoc[]
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include::sparse-vector-query.asciidoc[]
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include::semantic-query.asciidoc[]
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include::text-expansion-query.asciidoc[]
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include::weighted-tokens-query.asciidoc[]
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