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Add experimental and warnings to vector functions #42205

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May 21, 2019
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Add experimental and warnings to vector functions #42205

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8 changes: 8 additions & 0 deletions docs/reference/query-dsl/script-score-query.asciidoc
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Expand Up @@ -78,10 +78,18 @@ to be the most efficient by using the internal mechanisms.

[[vector-functions]]
===== Functions for vector fields

experimental[]

These functions are used for
for <<dense-vector,`dense_vector`>> and
<<sparse-vector,`sparse_vector`>> fields.

NOTE: During vector functions' calculation, all matched documents are
linearly scanned. Thus, expect the query time grow linearly
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@shadiramadan shadiramadan Jun 29, 2020 •
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@cbuescher there was a missing to with this PR

Thus, expect the query time to grow linearly

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@cbuescher cbuescher Jun 29, 2020

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Thanks. Feel free to open a PR with a correction.

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
cosine similarity between a given query vector and document vectors.

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