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.

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.