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Add experimental and warnings to vector functions (#42205)

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Mayya Sharipova 2019-05-21 06:36:38 -04:00
parent 0449869511
commit 216c74d10a
1 changed files with 8 additions and 0 deletions
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docs/reference/query-dsl/script-score-query.asciidoc
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@ -74,10 +74,18 @@ to be the most efficient by using the internal mechanisms.
[[vector-functions]] [[vector-functions]]
===== Functions for vector fields ===== Functions for vector fields
experimental[]
These functions are used for These functions are used for
for <<dense-vector,`dense_vector`>> and for <<dense-vector,`dense_vector`>> and
<<sparse-vector,`sparse_vector`>> fields. <<sparse-vector,`sparse_vector`>> fields.
NOTE: During vector functions' calculation, all matched documents are
linearly scanned. Thus, expect the query time grow linearly
with the number of matched documents. For this reason, we recommend
to limit the number of matched documents with a `query` parameter.
For dense_vector fields, `cosineSimilarity` calculates the measure of For dense_vector fields, `cosineSimilarity` calculates the measure of
cosine similarity between a given query vector and document vectors. cosine similarity between a given query vector and document vectors.