› ›

Vector queries

Vector queries are specialized queries that work on vector fields to efficiently perform semantic search.

knn query: A query that finds the k nearest vectors to a query vector for dense_vector fields, as measured by a similarity metric.
sparse_vector query: A query used to search sparse_vector field types.
semantic query: A query that allows you to perform semantic search on semantic_text fields.

Deprecated vector queries

The following queries have been deprecated and will be removed in the near future. Use the sparse_vector query query instead.

text_expansion query: A query that allows you to perform sparse vector search on sparse_vector or rank_features fields.
weighted_tokens query: Allows to perform text expansion queries optimizing for performance.

© 2023-2025 Elasticsearch
As of September 2024, Elasticsearch is available under a choice of three licenses: the Server Side Public License (SSPL), the Elastic License, or the AGPLv3 (OSI approved).
Elasticsearch and the Elasticsearch logo are trademarks of Elasticsearch B.V., registered in the U.S. and in other countries.
https://www.elastic.co/guide/en/elasticsearch/reference/8.17/vector-queries.html