search()

Conducts a vector search.

Invocation

new milvusClient(MILUVS_ADDRESS).dataManager.search(SearchReq);

Parameter

SearchReq(object)

Parameter	Description	type	required
collection_name	Collection name	String	true
search_params	Search parameters	SearchParams	true
vectors	Original vector to search with	Number[][]	true
vector_type	Search parameters	VectorTypes	true
output_fields(optional)	Vector or scalar field to be returned	String[]	false
travel_timestamp(optional)	Use this timestamp we can time travel in vector search.	number	false
partitions_names(optional)	Array of partition names	string[]	false
expr(optional)	Scalar field filter expression	String	false

SearchParams(object)

Parameter	Description	type	required
anns_field	vector field name	String	true
topk	search result counts	string[]	false
metric_type	metric type	MetricTypes	false
params	special parameters	SearchParam	true

MetricTypes(string)

Value	Description
L2	Euclidean distance
IP	Inner product
HAMMING	Hamming distance
JACCARD	Jaccard distance
TANIMOTO	Tanimoto distance
SUBSTRUCTURE	Superstructure
SUPERSTRUCTURE	Substructure

VectorTypes

Value	Description
100	Binary
101	Float

SearchParam

Please refer https://milvus.io/docs/index.md

Example

new milvusClient(MILUVS_ADDRESS).dataManager.search({
  collection_name: 'my-collection-name',
  expr: "",
  vectors: [[1, 2, 3, 4]],
  search_params: {
    anns_field: 'my-vector-field-name',
    topk: 4,
    metric_type: "L2",
    params: JSON.stringify({ nprobe: 1024 }),
  },
  output_fields: ["age", "time"],
  vector_type: 100,
});

Return

// search return