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Expand Up @@ -81,12 +81,6 @@ FT.SEARCH myIndex "foo" SCORER TFIDF.DOCNORM

## BM25STD (default)

{{< warning >}}
Deleting or replacing an indexed document can temporarily affect the scores of other documents that contain any of the same terms.
As a result, `FT.SEARCH` score values may be inaccurate until the Redis Search garbage collector runs and removes the stale term data.
{{< /warning >}}


A variation on the basic `TFIDF` scorer, see [this Wikipedia article for more info](https://en.wikipedia.org/wiki/Okapi_BM25).

The relevance score for each document is multiplied by the presumptive document score and a penalty is applied based on slop as in `TFIDF`.
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