Need recommendation on the value of 'k' passed for ANN search - https://opensearch.org/docs/latest/search-plugins/knn/approximate-knn/#get-started-with-approximate-k-nn

[VijayDeyTR]

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• Request a change to existing documentation
• Add new documentation
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Could you please provide the recommendation for the value of 'k' neighbours to be passed as part of ann search wrt to the ef_search index setting? How does passing k > ef_Search in the query affect the precision/recall?

Documentation - https://opensearch.org/docs/latest/search-plugins/knn/approximate-knn/#get-started-with-approximate-k-nn

[Naarcha-AWS]

@VijayDeyTR: You might be better off posting this question in our forum. There, our devs and other members of the community might give you the answer you're looking for.

I'll keep this issue open for now in case there's a related documentation impact based on what you discover.

[hdhalter]

Hi @VijayDeyTR - were you able to get your question answered in the forum? Thanks.