OpenSearch/docs/painless/painless-contexts/painless-score-context.asci...

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[[painless-score-context]]
=== Score context
Use a Painless script in a
{es_version}/query-dsl-function-score-query.html[function score] to apply a new
score to documents returned from a query.
*Variables*
`params` (`Map`, read-only)::
User-defined parameters passed in as part of the query.
`doc` (`Map`, read-only)::
Contains the fields of the current document where each field is a
`List` of values.
`_score` (`double` read-only)::
The similarity score of the current document.
*Return*
`double`::
The score for the current document.
*API*
The standard <<painless-api-reference, Painless API>> is available.