NewHNSWPRQAnnParam()

This function creates an ANN search parameter set for the HNSW_PRQ index with a configurable ef (search scope) value.

Go

func NewHNSWPRQAnnParam(ef int) *hnswQuantAnnParam

PARAMETERS:

• ef (int)

  The size of the dynamic candidate list during search. Higher values improve recall but increase latency. Must be >= topK.

RETURNS:

AnnParam

An ANN search parameter instance. Pass this to a search option via WithAnnParam().

BUILDER METHODS:

• WithRefineK(refineK float64)

  Sets how many candidates the refine index re-ranks, as a multiple of the requested top-k. Fractional values such as 1.5 are meaningful. Only useful on an index built with WithRefineType.

• WithSeedEf(seedEf int)

  Sets the ef used to seed an iterator search.

Example

Go

import (
	"github.com/milvus-io/milvus/client/v3/index"
	"github.com/milvus-io/milvus/client/v3/milvusclient"
)

// Create ANN search parameters
param := index.NewHNSWPRQAnnParam(10)

// Use with a search option
option := milvusclient.NewSearchOption("collection_name", limit, vectors).
    WithAnnParam(param)