diff --git a/solutions/search/vector/knn.md b/solutions/search/vector/knn.md index ef7b5ed460..6e9a23a75e 100644 --- a/solutions/search/vector/knn.md +++ b/solutions/search/vector/knn.md @@ -915,7 +915,7 @@ All forms of quantization will result in some accuracy loss and as the quantizat * `int4` requires some rescoring for higher accuracy and larger recall scenarios. Generally, oversampling by 1.5x-2x recovers most of the accuracy loss. * `bbq` requires rescoring except on exceptionally large indices or models specifically designed for quantization. We have found that between 3x-5x oversampling is generally sufficient. But for fewer dimensions or vectors that do not quantize well, higher oversampling may be required. -You can use the `rescore_vector` [preview] option to automatically perform reranking. When a rescore `oversample` parameter is specified, the approximate kNN search will: +You can use the [`rescore_vector` option](https://www.elastic.co/docs/api/doc/elasticsearch/v9/operation/operation-search#operation-search-body-application-json-knn-rescore_vector) to automatically perform reranking. When a rescore `oversample` parameter is specified, the approximate kNN search will: * Retrieve `num_candidates` candidates per shard. * From these candidates, the top `k * oversample` candidates per shard will be rescored using the original vectors.